dynmcp - npm Package Compare versions

Comparing version 0.2.0 to 0.3.0

dist/index.cjs

@@ -26,3 +26,3 @@ "use strict";
 // src/cli.ts
-var import_node_process6 = __toESM(require("process"), 1);
+var import_node_process7 = __toESM(require("process"), 1);
 var import_commander = require("commander");
@@ -33,3 +33,3 @@
   name: "dynmcp",
-  version: "0.2.0",
+  version: "0.3.0",
   description: "Dynamic MCP context management tool for AI MCP-enabled agents and clients.",
@@ -114,2 +114,3 @@ author: "Brandon Burrus <[e-mail]>",
     "@types/node": "^25.9.0",
+    "@vitest/coverage-v8": "^4.1.6",
     husky: "^9.1.7",
@@ -128,4 +129,4 @@ tsup: "^8.5.1",
 // src/proxy/index.ts
-var import_node_process5 = __toESM(require("process"), 1);
-var import_stdio2 = require("@modelcontextprotocol/sdk/client/stdio.js");
+var import_node_process6 = __toESM(require("process"), 1);
+var import_stdio3 = require("@modelcontextprotocol/sdk/client/stdio.js");
 
@@ -392,29 +393,35 @@ // src/config/schema.ts
 
-// src/proxy/transport-factory.ts
-var import_stdio = require("@modelcontextprotocol/sdk/client/stdio.js");
-var import_streamableHttp = require("@modelcontextprotocol/sdk/client/streamableHttp.js");
-var import_sse = require("@modelcontextprotocol/sdk/client/sse.js");
-function createTransport(config) {
-  switch (config.transport) {
-    case "stdio":
-      return new import_stdio.StdioClientTransport({
-        command: config.command,
-        args: config.args,
-        env: config.env
-      });
-    case "streamable-http":
-      return new import_streamableHttp.StreamableHTTPClientTransport(
-        new URL(config.url),
-        config.headers ? { requestInit: { headers: config.headers } } : void 0
-      );
-    case "sse":
-      return new import_sse.SSEClientTransport(
-        new URL(config.url),
-        config.headers ? { requestInit: { headers: config.headers } } : void 0
-      );
-    default: {
-      const _exhaustive = config;
-      return _exhaustive;
+// src/proxy/orchestrator.ts
+var import_node_process4 = __toESM(require("process"), 1);
+
+// src/proxy/capability-aggregator.ts
+function aggregateCapabilities(upstreams) {
+  const aggregated = {
+    tools: { listChanged: true }
+  };
+  for (const caps of upstreams) {
+    if (caps === void 0) continue;
+    if (caps.resources !== void 0) {
+      aggregated.resources ??= {};
+      if (caps.resources.subscribe === true) {
+        aggregated.resources.subscribe = true;
+      }
+      if (caps.resources.listChanged === true) {
+        aggregated.resources.listChanged = true;
+      }
     }
+    if (caps.prompts !== void 0) {
+      aggregated.prompts ??= {};
+      if (caps.prompts.listChanged === true) {
+        aggregated.prompts.listChanged = true;
+      }
+    }
+    if (caps.logging !== void 0) {
+      aggregated.logging ??= {};
+    }
+    if (caps.completions !== void 0) {
+      aggregated.completions ??= {};
+    }
   }
+  return aggregated;
 }
@@ -525,11 +532,247 @@
 
+// src/proxy/notification-forwarder.ts
+var NotificationForwarder = class {
+  constructor(registry, resourceRouter, promptRouter, toolsByMcp, setToolCatalog, namespaced) {
+    this.registry = registry;
+    this.resourceRouter = resourceRouter;
+    this.promptRouter = promptRouter;
+    this.toolsByMcp = toolsByMcp;
+    this.setToolCatalog = setToolCatalog;
+    this.namespaced = namespaced;
+  }
+  registry;
+  resourceRouter;
+  promptRouter;
+  toolsByMcp;
+  setToolCatalog;
+  namespaced;
+  hostHandlers = {};
+  setHostHandlers(handlers) {
+    this.hostHandlers = handlers;
+  }
+  async handleToolsListChanged(mcpName2) {
+    const client = this.registry.get(mcpName2);
+    if (client === void 0) return;
+    const tools = await client.listTools().catch(() => []);
+    this.toolsByMcp.set(mcpName2, tools);
+    const rebuilt = this.namespaced ? ToolCatalog.fromGrouped(this.toolsByMcp) : ToolCatalog.fromFlat([...this.toolsByMcp.values()][0] ?? []);
+    this.setToolCatalog(rebuilt);
+    await this.hostHandlers.onToolsListChanged?.();
+  }
+  async handleResourcesListChanged(mcpName2) {
+    const router = this.resourceRouter();
+    const client = this.registry.get(mcpName2);
+    if (router === null || client === void 0) return;
+    const [resources, templates] = await Promise.all([
+      client.listResources().catch(() => []),
+      client.listResourceTemplates().catch(() => [])
+    ]);
+    router.setResources(mcpName2, resources);
+    router.setTemplates(mcpName2, templates);
+    await this.hostHandlers.onResourcesListChanged?.();
+  }
+  async handleResourceUpdated(params) {
+    await this.hostHandlers.onResourceUpdated?.(params);
+  }
+  async handlePromptsListChanged(mcpName2) {
+    const router = this.promptRouter();
+    const client = this.registry.get(mcpName2);
+    if (router === null || client === void 0) return;
+    const prompts = await client.listPrompts().catch(() => []);
+    router.setPrompts(mcpName2, prompts);
+    await this.hostHandlers.onPromptsListChanged?.();
+  }
+  /**
+   * Rewrites the upstream's `logger` field with the originating MCP's name as a
+   * prefix so the host can attribute log lines, then forwards the message to the
+   * host's log message handler.
+   */
+  async handleLogMessage(mcpName2, params) {
+    const handler = this.hostHandlers.onLogMessage;
+    if (handler === void 0) return;
+    if (!this.namespaced) {
+      await handler(params);
+      return;
+    }
+    const prefixed = {
+      ...params,
+      logger: params.logger === void 0 ? mcpName2 : `${mcpName2}/${params.logger}`
+    };
+    await handler(prefixed);
+  }
+};
+
+// src/proxy/prompt-router.ts
+var PromptRouter = class {
+  mcpOrder;
+  perMcp;
+  nameOwners = /* @__PURE__ */ new Map();
+  detectedCollisions = [];
+  constructor(mcpOrder) {
+    this.mcpOrder = [...mcpOrder];
+    this.perMcp = new Map(this.mcpOrder.map((name) => [name, []]));
+  }
+  setPrompts(mcpName2, prompts) {
+    const entry = this.perMcp.get(mcpName2);
+    if (entry === void 0) {
+      throw new Error(`PromptRouter: unknown mcp "${mcpName2}"`);
+    }
+    this.perMcp.set(mcpName2, [...prompts]);
+    this.rebuild();
+  }
+  aggregatedPrompts() {
+    const result = [];
+    for (const mcpName2 of this.mcpOrder) {
+      const entry = this.perMcp.get(mcpName2);
+      if (entry !== void 0) {
+        result.push(...entry);
+      }
+    }
+    return result;
+  }
+  ownerOf(promptName) {
+    return this.nameOwners.get(promptName);
+  }
+  collisions() {
+    return this.detectedCollisions;
+  }
+  rebuild() {
+    this.nameOwners = /* @__PURE__ */ new Map();
+    const collisions = [];
+    for (const mcpName2 of this.mcpOrder) {
+      const prompts = this.perMcp.get(mcpName2);
+      if (prompts === void 0) continue;
+      for (const prompt of prompts) {
+        const existing = this.nameOwners.get(prompt.name);
+        if (existing === void 0) {
+          this.nameOwners.set(prompt.name, mcpName2);
+        } else {
+          collisions.push({ name: prompt.name, chosen: existing, shadowed: mcpName2 });
+        }
+      }
+    }
+    this.detectedCollisions = collisions;
+  }
+};
+
+// src/proxy/resource-router.ts
+var ResourceRouter = class {
+  mcpOrder;
+  perMcp;
+  uriOwners = /* @__PURE__ */ new Map();
+  templateOwners = [];
+  detectedCollisions = [];
+  constructor(mcpOrder) {
+    this.mcpOrder = [...mcpOrder];
+    this.perMcp = new Map(
+      this.mcpOrder.map((name) => [name, { resources: [], templates: [] }])
+    );
+  }
+  setResources(mcpName2, resources) {
+    const entry = this.perMcp.get(mcpName2);
+    if (entry === void 0) {
+      throw new Error(`ResourceRouter: unknown mcp "${mcpName2}"`);
+    }
+    entry.resources = [...resources];
+    this.rebuild();
+  }
+  setTemplates(mcpName2, templates) {
+    const entry = this.perMcp.get(mcpName2);
+    if (entry === void 0) {
+      throw new Error(`ResourceRouter: unknown mcp "${mcpName2}"`);
+    }
+    entry.templates = [...templates];
+    this.rebuild();
+  }
+  aggregatedResources() {
+    const result = [];
+    for (const mcpName2 of this.mcpOrder) {
+      const entry = this.perMcp.get(mcpName2);
+      if (entry !== void 0) {
+        result.push(...entry.resources);
+      }
+    }
+    return result;
+  }
+  aggregatedTemplates() {
+    const result = [];
+    for (const mcpName2 of this.mcpOrder) {
+      const entry = this.perMcp.get(mcpName2);
+      if (entry !== void 0) {
+        result.push(...entry.templates);
+      }
+    }
+    return result;
+  }
+  /**
+   * Returns the mcpName that owns the given URI, or undefined if no upstream advertises it.
+   * Concrete URI matches take precedence over template prefix matches; templates are tried
+   * in config-file order (first-wins).
+   */
+  ownerOf(uri) {
+    const concrete = this.uriOwners.get(uri);
+    if (concrete !== void 0) {
+      return concrete;
+    }
+    for (const { prefix, mcpName: mcpName2 } of this.templateOwners) {
+      if (prefix.length > 0 && uri.startsWith(prefix)) {
+        return mcpName2;
+      }
+    }
+    return void 0;
+  }
+  collisions() {
+    return this.detectedCollisions;
+  }
+  rebuild() {
+    this.uriOwners = /* @__PURE__ */ new Map();
+    this.templateOwners = [];
+    const collisions = [];
+    for (const mcpName2 of this.mcpOrder) {
+      const entry = this.perMcp.get(mcpName2);
+      if (entry === void 0) continue;
+      for (const resource of entry.resources) {
+        const existing = this.uriOwners.get(resource.uri);
+        if (existing === void 0) {
+          this.uriOwners.set(resource.uri, mcpName2);
+        } else {
+          collisions.push({ uri: resource.uri, chosen: existing, shadowed: mcpName2 });
+        }
+      }
+      for (const template of entry.templates) {
+        this.templateOwners.push({
+          prefix: literalPrefixOf(template.uriTemplate),
+          template,
+          mcpName: mcpName2
+        });
+      }
+    }
+    this.detectedCollisions = collisions;
+  }
+};
+function literalPrefixOf(uriTemplate) {
+  const idx = uriTemplate.indexOf("{");
+  return idx === -1 ? uriTemplate : uriTemplate.slice(0, idx);
+}
+
 // src/proxy/upstream-client.ts
 var import_node_process3 = __toESM(require("process"), 1);
 var import_client = require("@modelcontextprotocol/sdk/client/index.js");
+var import_types = require("@modelcontextprotocol/sdk/types.js");
 var UpstreamClient = class {
   transport;
   onTransportError;
+  notificationHandlers;
+  serverRequestHandlers;
   client = null;
-  constructor({ name, transport, onTransportError }) {
+  constructor({
+    name,
+    transport,
+    onTransportError,
+    notifications,
+    serverRequests
+  }) {
     this.transport = transport;
+    this.notificationHandlers = notifications ?? {};
+    this.serverRequestHandlers = serverRequests ?? {};
     this.onTransportError = onTransportError ?? ((error) => {
@@ -542,10 +785,76 @@ import_node_process3.default.stderr.write(`[${name}] Upstream MCP transport error: ${error.message}
     this.transport.onerror = this.onTransportError;
-    this.client = new import_client.Client({ name: "dynamic-discovery-mcp", version: "1.0.0" });
+    this.client = new import_client.Client(
+      { name: "dynamic-discovery-mcp", version: "1.0.0" },
+      {
+        capabilities: {
+          // Declare every client-side capability the proxy may relay on behalf of the host.
+          // Actual reachability of each feature depends on what the host supports — if the
+          // host does not support sampling, for instance, the host call returns an error
+          // which we forward back to the upstream verbatim.
+          sampling: {},
+          elicitation: {},
+          roots: { listChanged: true }
+        }
+      }
+    );
+    this.registerServerRequestHandlers(this.client);
+    if (this.notificationHandlers.onToolsListChanged !== void 0) {
+      this.client.setNotificationHandler(import_types.ToolListChangedNotificationSchema, async () => {
+        await this.notificationHandlers.onToolsListChanged?.();
+      });
+    }
+    if (this.notificationHandlers.onResourcesListChanged !== void 0) {
+      this.client.setNotificationHandler(import_types.ResourceListChangedNotificationSchema, async () => {
+        await this.notificationHandlers.onResourcesListChanged?.();
+      });
+    }
+    if (this.notificationHandlers.onResourceUpdated !== void 0) {
+      this.client.setNotificationHandler(import_types.ResourceUpdatedNotificationSchema, async (notification) => {
+        await this.notificationHandlers.onResourceUpdated?.({ uri: notification.params.uri });
+      });
+    }
+    if (this.notificationHandlers.onPromptsListChanged !== void 0) {
+      this.client.setNotificationHandler(import_types.PromptListChangedNotificationSchema, async () => {
+        await this.notificationHandlers.onPromptsListChanged?.();
+      });
+    }
+    if (this.notificationHandlers.onLogMessage !== void 0) {
+      this.client.setNotificationHandler(import_types.LoggingMessageNotificationSchema, async (notification) => {
+        await this.notificationHandlers.onLogMessage?.(notification.params);
+      });
+    }
     await this.client.connect(this.transport);
   }
-  async listTools() {
-    if (this.client === null) {
-      throw new Error("Client is not connected. Call connect() first.");
+  async setLoggingLevel(level, options) {
+    const client = this.requireClient();
+    await client.setLoggingLevel(level, options);
+  }
+  async listPrompts(options) {
+    const client = this.requireClient();
+    const result = await client.listPrompts(void 0, options);
+    return result.prompts;
+  }
+  async getPrompt(name, args, options) {
+    const client = this.requireClient();
+    const params = { name };
+    if (args !== void 0) {
+      params.arguments = args;
     }
-    const result = await this.client.listTools();
+    return client.getPrompt(params, options);
+  }
+  async complete(params, options) {
+    const client = this.requireClient();
+    return client.complete(params, options);
+  }
+  /**
+   * Returns the capabilities advertised by the upstream server during initialize.
+   * Returns `undefined` if the client is not connected, or if the SDK has not yet
+   * recorded the server's capabilities (e.g. during a partially-completed handshake).
+   */
+  getCapabilities() {
+    return this.client?.getServerCapabilities();
+  }
+  async listTools(options) {
+    const client = this.requireClient();
+    const result = await client.listTools(void 0, options);
     return result.tools.map((tool) => {
@@ -572,9 +881,29 @@ const upstreamTool = {
   }
-  async callTool(name, input) {
-    if (this.client === null) {
-      throw new Error("Client is not connected. Call connect() first.");
-    }
-    const result = await this.client.callTool({ name, arguments: input });
+  async callTool(name, input, options) {
+    const client = this.requireClient();
+    const result = await client.callTool({ name, arguments: input }, void 0, options);
     return result;
   }
+  async listResources(options) {
+    const client = this.requireClient();
+    const result = await client.listResources(void 0, options);
+    return result.resources;
+  }
+  async listResourceTemplates(options) {
+    const client = this.requireClient();
+    const result = await client.listResourceTemplates(void 0, options);
+    return result.resourceTemplates;
+  }
+  async readResource(uri, options) {
+    const client = this.requireClient();
+    return client.readResource({ uri }, options);
+  }
+  async subscribeResource(uri, options) {
+    const client = this.requireClient();
+    await client.subscribeResource({ uri }, options);
+  }
+  async unsubscribeResource(uri, options) {
+    const client = this.requireClient();
+    await client.unsubscribeResource({ uri }, options);
+  }
   async disconnect() {
@@ -587,27 +916,65 @@ if (this.client === null) {
   }
+  /**
+   * Sends `notifications/roots/list_changed` to the upstream, letting it know that
+   * the host's set of filesystem roots has changed.
+   */
+  async sendRootsListChanged() {
+    const client = this.requireClient();
+    await client.sendRootsListChanged();
+  }
+  registerServerRequestHandlers(client) {
+    if (this.serverRequestHandlers.onCreateMessage !== void 0) {
+      client.setRequestHandler(
+        import_types.CreateMessageRequestSchema,
+        async (request, extra) => {
+          return this.serverRequestHandlers.onCreateMessage(request.params, {
+            signal: extra.signal
+          });
+        }
+      );
+    }
+    if (this.serverRequestHandlers.onElicitInput !== void 0) {
+      client.setRequestHandler(
+        import_types.ElicitRequestSchema,
+        async (request, extra) => {
+          return this.serverRequestHandlers.onElicitInput(request.params, {
+            signal: extra.signal
+          });
+        }
+      );
+    }
+    if (this.serverRequestHandlers.onListRoots !== void 0) {
+      client.setRequestHandler(
+        import_types.ListRootsRequestSchema,
+        async (request, extra) => {
+          return this.serverRequestHandlers.onListRoots(request.params, {
+            signal: extra.signal
+          });
+        }
+      );
+    }
+  }
+  requireClient() {
+    if (this.client === null) {
+      throw new Error("Client is not connected. Call connect() first.");
+    }
+    return this.client;
+  }
 };
 
-// src/proxy/orchestrator.ts
-var Orchestrator = class {
-  config;
+// src/proxy/upstream-registry.ts
+var UpstreamRegistry = class {
   clients = /* @__PURE__ */ new Map();
-  toolCatalog = null;
-  constructor(config) {
-    this.config = config;
-  }
-  async connect() {
-    const groups = /* @__PURE__ */ new Map();
+  async connectAll(entries) {
     try {
-      for (const [mcpName2, { transport }] of this.config.mcps) {
+      for (const [mcpName2, config] of entries) {
         const client = new UpstreamClient({
           name: mcpName2,
-          transport,
-          onTransportError: (error) => {
-            this.config.onTransportError?.(mcpName2, error);
-          }
+          transport: config.transport,
+          onTransportError: config.onTransportError,
+          notifications: config.notifications,
+          serverRequests: config.serverRequests
         });
         await client.connect();
-        const tools = await client.listTools();
         this.clients.set(mcpName2, client);
-        groups.set(mcpName2, tools);
       }
@@ -618,4 +985,127 @@ } catch (error) {
     }
-    this.toolCatalog = ToolCatalog.fromGrouped(groups);
   }
+  get(mcpName2) {
+    return this.clients.get(mcpName2);
+  }
+  /**
+   * Returns the sole connected client. Used by single-MCP (`--`) mode where the
+   * Orchestrator guarantees there is exactly one upstream. Returns undefined when
+   * zero or more than one client is connected.
+   */
+  sole() {
+    if (this.clients.size !== 1) return void 0;
+    return this.clients.values().next().value;
+  }
+  names() {
+    return [...this.clients.keys()];
+  }
+  entries() {
+    return this.clients.entries();
+  }
+  size() {
+    return this.clients.size;
+  }
+  async disconnectAll() {
+    const disconnections = [...this.clients.values()].map((client) => client.disconnect());
+    await Promise.all(disconnections);
+    this.clients.clear();
+  }
+};
+
+// src/proxy/orchestrator.ts
+var Orchestrator = class {
+  config;
+  registry = new UpstreamRegistry();
+  toolsByMcp = /* @__PURE__ */ new Map();
+  resourceRouter = null;
+  promptRouter = null;
+  toolCatalog = null;
+  aggregatedCapabilities = null;
+  serverRequestForwarders = {};
+  forwarder;
+  constructor(config) {
+    if (!config.namespaced && config.mcps.size !== 1) {
+      throw new Error(
+        `Single-MCP (non-namespaced) mode requires exactly one upstream; got ${config.mcps.size}.`
+      );
+    }
+    this.config = config;
+    this.forwarder = new NotificationForwarder(
+      this.registry,
+      () => this.resourceRouter,
+      () => this.promptRouter,
+      this.toolsByMcp,
+      (catalog) => {
+        this.toolCatalog = catalog;
+      },
+      this.config.namespaced
+    );
+  }
+  setNotificationHandlers(handlers) {
+    this.forwarder.setHostHandlers(handlers);
+  }
+  setServerRequestForwarders(forwarders) {
+    this.serverRequestForwarders = forwarders;
+  }
+  async connect() {
+    const resourceRouter = new ResourceRouter([...this.config.mcps.keys()]);
+    const promptRouter = new PromptRouter([...this.config.mcps.keys()]);
+    const upstreamEntries = [
+      ...this.config.mcps
+    ].map(([mcpName2, { transport }]) => [
+      mcpName2,
+      {
+        transport,
+        onTransportError: (error) => {
+          this.config.onTransportError?.(mcpName2, error);
+        },
+        notifications: {
+          onToolsListChanged: () => this.forwarder.handleToolsListChanged(mcpName2),
+          onResourcesListChanged: () => this.forwarder.handleResourcesListChanged(mcpName2),
+          onResourceUpdated: (params) => this.forwarder.handleResourceUpdated(params),
+          onPromptsListChanged: () => this.forwarder.handlePromptsListChanged(mcpName2),
+          onLogMessage: (params) => this.forwarder.handleLogMessage(mcpName2, params)
+        },
+        serverRequests: {
+          onCreateMessage: (params, opts) => this.forwardCreateMessage(params, opts),
+          onElicitInput: (params, opts) => this.forwardElicitInput(params, opts),
+          onListRoots: (params, opts) => this.forwardListRoots(params, opts)
+        }
+      }
+    ]);
+    await this.registry.connectAll(upstreamEntries);
+    const capabilityList = [];
+    this.toolsByMcp.clear();
+    for (const [mcpName2, client] of this.registry.entries()) {
+      const caps = client.getCapabilities();
+      capabilityList.push(caps);
+      const tools = await client.listTools();
+      this.toolsByMcp.set(mcpName2, tools);
+      if (caps?.resources !== void 0) {
+        const [resources, templates] = await Promise.all([
+          client.listResources().catch(() => []),
+          client.listResourceTemplates().catch(() => [])
+        ]);
+        resourceRouter.setResources(mcpName2, resources);
+        resourceRouter.setTemplates(mcpName2, templates);
+      }
+      if (caps?.prompts !== void 0) {
+        const prompts = await client.listPrompts().catch(() => []);
+        promptRouter.setPrompts(mcpName2, prompts);
+      }
+    }
+    this.toolCatalog = this.config.namespaced ? ToolCatalog.fromGrouped(this.toolsByMcp) : ToolCatalog.fromFlat([...this.toolsByMcp.values()][0] ?? []);
+    this.aggregatedCapabilities = aggregateCapabilities(capabilityList);
+    this.resourceRouter = resourceRouter;
+    this.promptRouter = promptRouter;
+    logCollisions(resourceRouter, promptRouter);
+  }
+  async disconnectAll() {
+    await this.registry.disconnectAll();
+    this.toolsByMcp.clear();
+    this.toolCatalog = null;
+    this.aggregatedCapabilities = null;
+    this.resourceRouter = null;
+    this.promptRouter = null;
+  }
   get catalog() {
@@ -627,126 +1117,491 @@ if (this.toolCatalog === null) {
   }
-  async callTool(namespacedName, input) {
-    const separatorIndex = namespacedName.indexOf("/");
-    if (separatorIndex === -1) {
-      throw new Error(
-        `Invalid namespaced tool name: "${namespacedName}". Expected format: "mcpName/toolName".`
-      );
+  get capabilities() {
+    if (this.aggregatedCapabilities === null) {
+      throw new Error("Orchestrator is not connected. Call connect() first.");
     }
-    const mcpName2 = namespacedName.slice(0, separatorIndex);
-    const toolName = namespacedName.slice(separatorIndex + 1);
-    const client = this.clients.get(mcpName2);
+    return this.aggregatedCapabilities;
+  }
+  // === Forward-direction request routing ===
+  async callTool(displayName, input, options) {
+    if (this.config.namespaced) {
+      const { mcpName: mcpName2, toolName } = splitNamespacedName(displayName, this.registry.names());
+      return this.requireClient(mcpName2, "tool").callTool(toolName, input, options);
+    }
+    const sole = this.registry.sole();
+    if (sole === void 0) {
+      throw new Error("Orchestrator is not connected. Call connect() first.");
+    }
+    return sole.callTool(displayName, input, options);
+  }
+  listResources() {
+    return this.requireResourceRouter().aggregatedResources();
+  }
+  listResourceTemplates() {
+    return this.requireResourceRouter().aggregatedTemplates();
+  }
+  async readResource(uri, options) {
+    return this.resolveResourceOwner(uri).readResource(uri, options);
+  }
+  async subscribeResource(uri, options) {
+    await this.resolveResourceOwner(uri).subscribeResource(uri, options);
+  }
+  async unsubscribeResource(uri, options) {
+    await this.resolveResourceOwner(uri).unsubscribeResource(uri, options);
+  }
+  listPrompts() {
+    return this.requirePromptRouter().aggregatedPrompts();
+  }
+  async getPrompt(name, args, options) {
+    return this.resolvePromptOwner(name).getPrompt(name, args, options);
+  }
+  async complete(params, options) {
+    const client = this.resolveCompletionTarget(params.ref);
+    return client.complete(params, options);
+  }
+  // === Broadcasts ===
+  /**
+   * Broadcasts a `logging/setLevel` request to every upstream advertising the logging
+   * capability. Errors from individual upstreams are swallowed so a single misbehaving
+   * upstream cannot break the broadcast for others; failures are written to stderr.
+   */
+  async setLoggingLevel(level, options) {
+    await this.broadcastAsync(
+      (client) => client.getCapabilities()?.logging !== void 0 ? client.setLoggingLevel(level, options) : Promise.resolve(),
+      "setLoggingLevel"
+    );
+  }
+  /**
+   * Broadcasts `notifications/roots/list_changed` to every connected upstream — the
+   * proxy declares roots capability uniformly to all upstreams so every one of them
+   * may have requested roots and needs to know the list changed.
+   */
+  async broadcastRootsListChanged() {
+    await this.broadcastAsync((client) => client.sendRootsListChanged(), "sendRootsListChanged");
+  }
+  // === Server-initiated request forwarders (upstream → host) ===
+  async forwardCreateMessage(params, options) {
+    const handler = this.serverRequestForwarders.onCreateMessage;
+    if (handler === void 0) {
+      throw new Error("Proxy does not support sampling: host has not registered a handler.");
+    }
+    return handler(params, options);
+  }
+  async forwardElicitInput(params, options) {
+    const handler = this.serverRequestForwarders.onElicitInput;
+    if (handler === void 0) {
+      throw new Error("Proxy does not support elicitation: host has not registered a handler.");
+    }
+    return handler(params, options);
+  }
+  async forwardListRoots(params, options) {
+    const handler = this.serverRequestForwarders.onListRoots;
+    if (handler === void 0) {
+      throw new Error("Proxy does not support roots: host has not registered a handler.");
+    }
+    return handler(params, options);
+  }
+  // === Internal helpers ===
+  requireResourceRouter() {
+    if (this.resourceRouter === null) {
+      throw new Error("Orchestrator is not connected. Call connect() first.");
+    }
+    return this.resourceRouter;
+  }
+  requirePromptRouter() {
+    if (this.promptRouter === null) {
+      throw new Error("Orchestrator is not connected. Call connect() first.");
+    }
+    return this.promptRouter;
+  }
+  resolveResourceOwner(uri) {
+    const owner = this.requireResourceRouter().ownerOf(uri);
+    if (owner === void 0) {
+      throw new Error(`Unknown resource URI: "${uri}". No upstream MCP advertises it.`);
+    }
+    return this.requireClient(owner, "resource");
+  }
+  resolvePromptOwner(name) {
+    const owner = this.requirePromptRouter().ownerOf(name);
+    if (owner === void 0) {
+      throw new Error(`Unknown prompt: "${name}". No upstream MCP advertises it.`);
+    }
+    return this.requireClient(owner, "prompt");
+  }
+  resolveCompletionTarget(ref) {
+    if (ref.type === "ref/prompt") {
+      return this.resolvePromptOwner(ref.name);
+    }
+    if (ref.type === "ref/resource") {
+      return this.resolveResourceOwner(ref.uri);
+    }
+    const unknownRef = ref;
+    throw new Error(`Unsupported completion ref type: "${unknownRef.type}"`);
+  }
+  requireClient(mcpName2, role) {
+    const client = this.registry.get(mcpName2);
     if (client === void 0) {
-      const available = [...this.clients.keys()].sort().join(", ");
-      throw new Error(`Unknown MCP: "${mcpName2}". Available MCPs: ${available}`);
+      throw new Error(`Internal error: ${role} owner "${mcpName2}" has no connected client.`);
     }
-    return client.callTool(toolName, input);
+    return client;
   }
-  async disconnectAll() {
-    const disconnections = [...this.clients.values()].map((client) => client.disconnect());
-    await Promise.all(disconnections);
-    this.clients.clear();
-    this.toolCatalog = null;
+  async broadcastAsync(action, label) {
+    const targets = [];
+    for (const [mcpName2, client] of this.registry.entries()) {
+      targets.push(
+        action(client).catch((error) => {
+          const message = error instanceof Error ? error.message : String(error);
+          import_node_process4.default.stderr.write(`dynmcp: ${label} failed for "${mcpName2}": ${message}
+`);
+        })
+      );
+    }
+    await Promise.all(targets);
   }
 };
+function splitNamespacedName(namespacedName, knownMcpNames) {
+  const separatorIndex = namespacedName.indexOf("/");
+  if (separatorIndex === -1) {
+    throw new Error(
+      `Invalid namespaced tool name: "${namespacedName}". Expected format: "mcpName/toolName".`
+    );
+  }
+  const mcpName2 = namespacedName.slice(0, separatorIndex);
+  const toolName = namespacedName.slice(separatorIndex + 1);
+  if (!knownMcpNames.includes(mcpName2)) {
+    const available = [...knownMcpNames].sort().join(", ");
+    throw new Error(`Unknown MCP: "${mcpName2}". Available MCPs: ${available}`);
+  }
+  return { mcpName: mcpName2, toolName };
+}
+function logCollisions(resourceRouter, promptRouter) {
+  for (const collision of resourceRouter.collisions()) {
+    import_node_process4.default.stderr.write(
+      `dynmcp: resource URI collision: "${collision.uri}" is provided by "${collision.chosen}" and "${collision.shadowed}"; routing to "${collision.chosen}".
+`
+    );
+  }
+  for (const collision of promptRouter.collisions()) {
+    import_node_process4.default.stderr.write(
+      `dynmcp: prompt name collision: "${collision.name}" is provided by "${collision.chosen}" and "${collision.shadowed}"; routing to "${collision.chosen}".
+`
+    );
+  }
+}
 
 // src/proxy/server.ts
-var import_node_process4 = __toESM(require("process"), 1);
-var import_fastmcp = require("fastmcp");
+var import_node_process5 = __toESM(require("process"), 1);
+var import_server = require("@modelcontextprotocol/sdk/server/index.js");
+var import_stdio = require("@modelcontextprotocol/sdk/server/stdio.js");
+var import_types2 = require("@modelcontextprotocol/sdk/types.js");
 var import_zod3 = require("zod");
+var DISCOVER_TOOL_NAME = "discover_tool";
+var USE_TOOL_NAME = "use_tool";
+var USE_TOOL_DESCRIPTION = "Use a tool that was previously discovered with the discover_tool tool.";
+var DISCOVER_TOOL_INPUT_SCHEMA = {
+  type: "object",
+  properties: {
+    tool_name: { type: "string" }
+  },
+  required: ["tool_name"]
+};
+var USE_TOOL_INPUT_SCHEMA = {
+  type: "object",
+  properties: {
+    tool_name: { type: "string" },
+    tool_input: { type: "object", additionalProperties: true, default: {} }
+  },
+  required: ["tool_name"]
+};
+var DiscoverToolArgsSchema = import_zod3.z.object({ tool_name: import_zod3.z.string() });
+var UseToolArgsSchema = import_zod3.z.object({
+  tool_name: import_zod3.z.string(),
+  tool_input: import_zod3.z.record(import_zod3.z.string(), import_zod3.z.unknown()).default({})
+});
 var ProxyServer = class {
   catalog;
   callTool;
-  constructor({ catalog, callTool }) {
+  capabilities;
+  resources;
+  prompts;
+  complete;
+  setLoggingLevelCallback;
+  onRootsListChangedCallback;
+  sdkServer = null;
+  constructor({
+    catalog,
+    callTool,
+    capabilities,
+    resources,
+    prompts,
+    complete,
+    setLoggingLevel,
+    onRootsListChanged
+  }) {
     this.catalog = catalog;
     this.callTool = callTool;
+    this.capabilities = capabilities;
+    this.resources = resources;
+    this.prompts = prompts;
+    this.complete = complete;
+    this.setLoggingLevelCallback = setLoggingLevel;
+    this.onRootsListChangedCallback = onRootsListChanged;
   }
+  buildServer() {
+    const server = new import_server.Server(
+      {
+        name: "dynamic-discovery-mcp",
+        version: package_default.version
+      },
+      {
+        capabilities: this.capabilities
+      }
+    );
+    this.registerToolHandlers(server);
+    if (this.capabilities.resources !== void 0 && this.resources !== void 0) {
+      this.registerResourceHandlers(server, this.resources);
+    }
+    if (this.capabilities.prompts !== void 0 && this.prompts !== void 0) {
+      this.registerPromptHandlers(server, this.prompts);
+    }
+    if (this.capabilities.completions !== void 0 && this.complete !== void 0) {
+      this.registerCompletionHandler(server, this.complete);
+    }
+    if (this.capabilities.logging !== void 0 && this.setLoggingLevelCallback !== void 0) {
+      this.registerLoggingHandler(server, this.setLoggingLevelCallback);
+    }
+    if (this.onRootsListChangedCallback !== void 0) {
+      const callback = this.onRootsListChangedCallback;
+      server.setNotificationHandler(import_types2.RootsListChangedNotificationSchema, async () => {
+        await callback();
+      });
+    }
+    this.sdkServer = server;
+    return server;
+  }
+  /**
+   * Forwards an upstream-initiated `sampling/createMessage` request to the host. The
+   * upstream's abort signal is threaded through so cancellation by the upstream
+   * propagates to the host.
+   */
+  async forwardCreateMessage(params, options) {
+    const server = this.requireSdkServer();
+    return server.createMessage(params, options);
+  }
+  /**
+   * Forwards an upstream-initiated `elicitation/create` request to the host.
+   */
+  async forwardElicitInput(params, options) {
+    const server = this.requireSdkServer();
+    return server.elicitInput(params, options);
+  }
+  /**
+   * Forwards an upstream-initiated `roots/list` request to the host.
+   */
+  async forwardListRoots(params, options) {
+    const server = this.requireSdkServer();
+    return server.listRoots(params, options);
+  }
+  requireSdkServer() {
+    if (this.sdkServer === null) {
+      throw new Error("ProxyServer is not built. Call buildServer() before forwarding requests.");
+    }
+    return this.sdkServer;
+  }
   async start() {
-    const server = new import_fastmcp.FastMCP({
-      name: "dynamic-discovery-mcp",
-      version: package_default.version
-    });
-    server.addTool({
-      name: "discover_tool",
-      description: this.catalog.discoverToolDescription,
-      parameters: import_zod3.z.object({ tool_name: import_zod3.z.string() }),
-      execute: async ({ tool_name }) => {
-        return this.catalog.getToolDetails(tool_name);
+    const server = this.buildServer();
+    const transport = new import_stdio.StdioServerTransport();
+    import_node_process5.default.stderr.write("Starting dynamic-discovery-mcp server over stdio\n");
+    await server.connect(transport);
+  }
+  /**
+   * Notifies the host that the discover_tool description has changed because an upstream
+   * emitted `notifications/tools/list_changed`. The host should re-fetch the tools list
+   * to pick up the regenerated catalog. Silently no-ops if `buildServer()` has not been
+   * called yet.
+   */
+  async sendToolListChanged() {
+    if (this.sdkServer !== null) {
+      await this.sdkServer.sendToolListChanged();
+    }
+  }
+  /**
+   * Notifies the host that the proxy's aggregated resource list has changed. Silently
+   * no-ops if `buildServer()` has not been called yet. Errors propagate.
+   */
+  async sendResourceListChanged() {
+    if (this.sdkServer !== null) {
+      await this.sdkServer.sendResourceListChanged();
+    }
+  }
+  /**
+   * Notifies the host that a specific subscribed resource has changed. Silently no-ops
+   * if `buildServer()` has not been called yet.
+   */
+  async sendResourceUpdated(params) {
+    if (this.sdkServer !== null) {
+      await this.sdkServer.sendResourceUpdated(params);
+    }
+  }
+  /**
+   * Notifies the host that the proxy's aggregated prompt list has changed. Silently
+   * no-ops if `buildServer()` has not been called yet.
+   */
+  async sendPromptListChanged() {
+    if (this.sdkServer !== null) {
+      await this.sdkServer.sendPromptListChanged();
+    }
+  }
+  registerToolHandlers(server) {
+    server.setRequestHandler(import_types2.ListToolsRequestSchema, async () => ({
+      tools: [
+        {
+          name: DISCOVER_TOOL_NAME,
+          description: this.catalog().discoverToolDescription,
+          inputSchema: DISCOVER_TOOL_INPUT_SCHEMA
+        },
+        {
+          name: USE_TOOL_NAME,
+          description: USE_TOOL_DESCRIPTION,
+          inputSchema: USE_TOOL_INPUT_SCHEMA
+        }
+      ]
+    }));
+    server.setRequestHandler(
+      import_types2.CallToolRequestSchema,
+      async (request, extra) => {
+        const { name, arguments: rawArgs } = request.params;
+        const catalog = this.catalog();
+        if (name === DISCOVER_TOOL_NAME) {
+          const args = DiscoverToolArgsSchema.parse(rawArgs ?? {});
+          return {
+            content: [{ type: "text", text: catalog.getToolDetails(args.tool_name) }]
+          };
+        }
+        if (name === USE_TOOL_NAME) {
+          const args = UseToolArgsSchema.parse(rawArgs ?? {});
+          if (!catalog.tools.has(args.tool_name)) {
+            return {
+              content: [{ type: "text", text: catalog.getToolDetails(args.tool_name) }]
+            };
+          }
+          return await this.callTool(args.tool_name, args.tool_input, { signal: extra.signal });
+        }
+        return {
+          isError: true,
+          content: [{ type: "text", text: `Unknown tool: "${name}"` }]
+        };
       }
+    );
+  }
+  registerResourceHandlers(server, callbacks) {
+    server.setRequestHandler(
+      import_types2.ListResourcesRequestSchema,
+      async () => ({
+        resources: callbacks.listResources()
+      })
+    );
+    server.setRequestHandler(
+      import_types2.ListResourceTemplatesRequestSchema,
+      async () => ({
+        resourceTemplates: callbacks.listResourceTemplates()
+      })
+    );
+    server.setRequestHandler(
+      import_types2.ReadResourceRequestSchema,
+      async (request, extra) => {
+        return callbacks.readResource(request.params.uri, { signal: extra.signal });
+      }
+    );
+    server.setRequestHandler(import_types2.SubscribeRequestSchema, async (request, extra) => {
+      await callbacks.subscribeResource(request.params.uri, { signal: extra.signal });
+      return {};
     });
-    server.addTool({
-      name: "use_tool",
-      description: "Use a tool that was previously discovered with the discover_tool tool.",
-      parameters: import_zod3.z.object({
-        tool_name: import_zod3.z.string(),
-        tool_input: import_zod3.z.record(import_zod3.z.string(), import_zod3.z.unknown()).default({})
-      }),
-      execute: async ({ tool_name, tool_input }) => {
-        if (!this.catalog.tools.has(tool_name)) {
-          return this.catalog.getToolDetails(tool_name);
-        }
-        const result = await this.callTool(tool_name, tool_input);
-        return result;
+    server.setRequestHandler(import_types2.UnsubscribeRequestSchema, async (request, extra) => {
+      await callbacks.unsubscribeResource(request.params.uri, { signal: extra.signal });
+      return {};
+    });
+  }
+  registerPromptHandlers(server, callbacks) {
+    server.setRequestHandler(
+      import_types2.ListPromptsRequestSchema,
+      async () => ({
+        prompts: callbacks.listPrompts()
+      })
+    );
+    server.setRequestHandler(
+      import_types2.GetPromptRequestSchema,
+      async (request, extra) => {
+        return callbacks.getPrompt(request.params.name, request.params.arguments, {
+          signal: extra.signal
+        });
       }
+    );
+  }
+  registerCompletionHandler(server, callback) {
+    server.setRequestHandler(
+      import_types2.CompleteRequestSchema,
+      async (request, extra) => {
+        return callback(request.params, { signal: extra.signal });
+      }
+    );
+  }
+  registerLoggingHandler(server, callback) {
+    server.setRequestHandler(import_types2.SetLevelRequestSchema, async (request, extra) => {
+      await callback(request.params.level, { signal: extra.signal });
+      return {};
     });
-    import_node_process4.default.stderr.write("Starting dynamic-discovery-mcp server over stdio\n");
-    await server.start({ transportType: "stdio" });
   }
+  /**
+   * Forwards a log message from an upstream MCP to the host. Silently no-ops if
+   * `buildServer()` has not been called yet.
+   */
+  async sendLoggingMessage(params) {
+    if (this.sdkServer !== null) {
+      await this.sdkServer.sendLoggingMessage(params);
+    }
+  }
 };
 
+// src/proxy/transport-factory.ts
+var import_stdio2 = require("@modelcontextprotocol/sdk/client/stdio.js");
+var import_streamableHttp = require("@modelcontextprotocol/sdk/client/streamableHttp.js");
+var import_sse = require("@modelcontextprotocol/sdk/client/sse.js");
+function createTransport(config) {
+  switch (config.transport) {
+    case "stdio":
+      return new import_stdio2.StdioClientTransport({
+        command: config.command,
+        args: config.args,
+        env: config.env
+      });
+    case "streamable-http":
+      return new import_streamableHttp.StreamableHTTPClientTransport(
+        new URL(config.url),
+        config.headers ? { requestInit: { headers: config.headers } } : void 0
+      );
+    case "sse":
+      return new import_sse.SSEClientTransport(
+        new URL(config.url),
+        config.headers ? { requestInit: { headers: config.headers } } : void 0
+      );
+    default: {
+      const _exhaustive = config;
+      return _exhaustive;
+    }
+  }
+}
+
 // src/proxy/index.ts
+var SINGLE_MCP_NAME = "__default__";
 async function startProxy(command, args) {
-  let isShuttingDown = false;
-  const transport = new import_stdio2.StdioClientTransport({ command, args });
-  const upstreamClient = new UpstreamClient({
-    name: command,
-    transport,
-    onTransportError: (error) => {
-      import_node_process5.default.stderr.write(`Upstream MCP transport error: ${error.message}
-`);
-      shutdown(1);
-    }
+  const transport = new import_stdio3.StdioClientTransport({ command, args });
+  const mcps = /* @__PURE__ */ new Map([[SINGLE_MCP_NAME, { transport }]]);
+  const orchestrator = buildOrchestrator({
+    mcps,
+    namespaced: false,
+    transportErrorPrefix: () => "Upstream MCP"
   });
-  const shutdown = (exitCode) => {
-    if (isShuttingDown) return;
-    isShuttingDown = true;
-    upstreamClient.disconnect().catch((error) => {
-      import_node_process5.default.stderr.write(
-        `dynmcp: error during disconnect: ${error instanceof Error ? error.message : String(error)}
-`
-      );
-    }).finally(() => import_node_process5.default.exit(exitCode));
-  };
-  try {
-    await upstreamClient.connect();
-  } catch (error) {
-    import_node_process5.default.stderr.write(`dynmcp: ${error instanceof Error ? error.message : String(error)}
-`);
-    import_node_process5.default.exit(1);
-  }
-  let tools;
-  try {
-    tools = await upstreamClient.listTools();
-  } catch (error) {
-    import_node_process5.default.stderr.write(`dynmcp: ${error instanceof Error ? error.message : String(error)}
-`);
-    import_node_process5.default.exit(1);
-  }
-  const catalog = ToolCatalog.fromFlat(tools);
-  const proxyServer = new ProxyServer({
-    catalog,
-    callTool: (name, input) => upstreamClient.callTool(name, input)
-  });
-  import_node_process5.default.on("SIGINT", () => shutdown(0));
-  import_node_process5.default.on("SIGTERM", () => shutdown(0));
-  import_node_process5.default.stdin.on("end", () => shutdown(0));
-  import_node_process5.default.stdin.on("close", () => shutdown(0));
-  try {
-    await proxyServer.start();
-  } catch (error) {
-    shutdown(1);
-    throw error;
-  }
+  await runProxy(orchestrator);
 }
 async function startProxyFromConfig(options = {}) {
-  let isShuttingDown = false;
   const config = loadConfig(options);
@@ -757,10 +1612,25 @@ const mcps = /* @__PURE__ */ new Map();
   }
-  const orchestrator = new Orchestrator({
+  const orchestrator = buildOrchestrator({
     mcps,
+    namespaced: true,
+    transportErrorPrefix: (mcpName2) => `Upstream MCP "${mcpName2}"`
+  });
+  await runProxy(orchestrator);
+}
+var activeShutdown = { shutdown: null };
+function buildOrchestrator(params) {
+  return new Orchestrator({
+    mcps: params.mcps,
+    namespaced: params.namespaced,
     onTransportError: (mcpName2, error) => {
-      import_node_process5.default.stderr.write(`Upstream MCP "${mcpName2}" transport error: ${error.message}
-`);
-      shutdown(1);
+      import_node_process6.default.stderr.write(
+        `${params.transportErrorPrefix(mcpName2)} transport error: ${error.message}
+`
+      );
+      activeShutdown.shutdown?.(1);
     }
   });
+}
+async function runProxy(orchestrator) {
+  let isShuttingDown = false;
   const shutdown = (exitCode) => {
@@ -770,23 +1640,52 @@ if (isShuttingDown) return;
     orchestrator.disconnectAll().catch((error) => {
-      import_node_process5.default.stderr.write(
+      import_node_process6.default.stderr.write(
         `dynmcp: error during disconnect: ${error instanceof Error ? error.message : String(error)}
 `
       );
-    }).finally(() => import_node_process5.default.exit(exitCode));
+    }).finally(() => import_node_process6.default.exit(exitCode));
   };
+  activeShutdown.shutdown = shutdown;
   try {
     await orchestrator.connect();
   } catch (error) {
-    import_node_process5.default.stderr.write(`dynmcp: ${error instanceof Error ? error.message : String(error)}
+    import_node_process6.default.stderr.write(`dynmcp: ${error instanceof Error ? error.message : String(error)}
 `);
-    import_node_process5.default.exit(1);
+    import_node_process6.default.exit(1);
+    return;
   }
   const proxyServer = new ProxyServer({
-    catalog: orchestrator.catalog,
-    callTool: (name, input) => orchestrator.callTool(name, input)
+    catalog: () => orchestrator.catalog,
+    capabilities: orchestrator.capabilities,
+    callTool: (name, input, options) => orchestrator.callTool(name, input, options),
+    resources: orchestrator.capabilities.resources !== void 0 ? {
+      listResources: () => orchestrator.listResources(),
+      listResourceTemplates: () => orchestrator.listResourceTemplates(),
+      readResource: (uri, options) => orchestrator.readResource(uri, options),
+      subscribeResource: (uri, options) => orchestrator.subscribeResource(uri, options),
+      unsubscribeResource: (uri, options) => orchestrator.unsubscribeResource(uri, options)
+    } : void 0,
+    prompts: orchestrator.capabilities.prompts !== void 0 ? {
+      listPrompts: () => orchestrator.listPrompts(),
+      getPrompt: (name, args, options) => orchestrator.getPrompt(name, args, options)
+    } : void 0,
+    complete: orchestrator.capabilities.completions !== void 0 ? (params, options) => orchestrator.complete(params, options) : void 0,
+    setLoggingLevel: orchestrator.capabilities.logging !== void 0 ? (level, options) => orchestrator.setLoggingLevel(level, options) : void 0,
+    onRootsListChanged: () => orchestrator.broadcastRootsListChanged()
   });
-  import_node_process5.default.on("SIGINT", () => shutdown(0));
-  import_node_process5.default.on("SIGTERM", () => shutdown(0));
-  import_node_process5.default.stdin.on("end", () => shutdown(0));
-  import_node_process5.default.stdin.on("close", () => shutdown(0));
+  orchestrator.setNotificationHandlers({
+    onToolsListChanged: () => proxyServer.sendToolListChanged(),
+    onResourcesListChanged: () => proxyServer.sendResourceListChanged(),
+    onResourceUpdated: (params) => proxyServer.sendResourceUpdated(params),
+    onPromptsListChanged: () => proxyServer.sendPromptListChanged(),
+    onLogMessage: (params) => proxyServer.sendLoggingMessage(params)
+  });
+  orchestrator.setServerRequestForwarders({
+    onCreateMessage: (params, options) => proxyServer.forwardCreateMessage(params, options),
+    onElicitInput: (params, options) => proxyServer.forwardElicitInput(params, options),
+    onListRoots: (params, options) => proxyServer.forwardListRoots(params, options)
+  });
+  import_node_process6.default.on("SIGINT", () => shutdown(0));
+  import_node_process6.default.on("SIGTERM", () => shutdown(0));
+  import_node_process6.default.stdin.on("end", () => shutdown(0));
+  import_node_process6.default.stdin.on("close", () => shutdown(0));
   try {
@@ -811,16 +1710,13 @@ await proxyServer.start();
   "\nExamples:\n  dynmcp -- npx -y chrome-devtools-mcp@latest\n  dynmcp --config ./mcp.json\n"
-).option("-c, --config <path>", "Path to config file (JSON or YAML)").option(
-  "-e, --env <path>",
-  "Path to a .env file for environment variable interpolation"
-).allowExcessArguments(true).passThroughOptions(true).action(async (_options, cmd) => {
-  const separatorIndex = import_node_process6.default.argv.indexOf("--");
+).option("-c, --config <path>", "Path to config file (JSON or YAML)").option("-e, --env <path>", "Path to a .env file for environment variable interpolation").allowExcessArguments(true).passThroughOptions(true).action(async (_options, cmd) => {
+  const separatorIndex = import_node_process7.default.argv.indexOf("--");
   const configPath = cmd.opts().config;
   const envFilePath = cmd.opts().env;
   if (separatorIndex !== -1) {
-    const [command, ...args] = import_node_process6.default.argv.slice(separatorIndex + 1);
+    const [command, ...args] = import_node_process7.default.argv.slice(separatorIndex + 1);
     if (command === void 0) {
-      import_node_process6.default.stderr.write(
+      import_node_process7.default.stderr.write(
         "dynmcp: no upstream command provided after --.\nUsage: dynmcp -- <command> [args...]\n"
       );
-      import_node_process6.default.exit(1);
+      import_node_process7.default.exit(1);
     }
@@ -830,5 +1726,5 @@ try {
     } catch (error) {
-      import_node_process6.default.stderr.write(`dynmcp: ${error instanceof Error ? error.message : String(error)}
+      import_node_process7.default.stderr.write(`dynmcp: ${error instanceof Error ? error.message : String(error)}
 `);
-      import_node_process6.default.exit(1);
+      import_node_process7.default.exit(1);
     }
@@ -840,5 +1736,5 @@ return;
   } catch (error) {
-    import_node_process6.default.stderr.write(`dynmcp: ${error instanceof Error ? error.message : String(error)}
+    import_node_process7.default.stderr.write(`dynmcp: ${error instanceof Error ? error.message : String(error)}
 `);
-    import_node_process6.default.exit(1);
+    import_node_process7.default.exit(1);
   }
@@ -848,7 +1744,7 @@ });
 // src/index.ts
-var import_node_process7 = __toESM(require("process"), 1);
+var import_node_process8 = __toESM(require("process"), 1);
 async function main() {
-  cli.parse(import_node_process7.default.argv);
+  cli.parse(import_node_process8.default.argv);
 }
 main();
 //# sourceMappingURL=index.cjs.map

dist/index.js

 #!/usr/bin/env node
 
 // src/cli.ts
-import process6 from "process";
+import process7 from "process";
 import { Command } from "commander";
@@ -10,3 +10,3 @@
   name: "dynmcp",
-  version: "0.2.0",
+  version: "0.3.0",
   description: "Dynamic MCP context management tool for AI MCP-enabled agents and clients.",
@@ -91,2 +91,3 @@ author: "Brandon Burrus <[e-mail]>",
     "@types/node": "^25.9.0",
+    "@vitest/coverage-v8": "^4.1.6",
     husky: "^9.1.7",
@@ -105,3 +106,3 @@ tsup: "^8.5.1",
 // src/proxy/index.ts
-import process5 from "process";
+import process6 from "process";
 import { StdioClientTransport as StdioClientTransport2 } from "@modelcontextprotocol/sdk/client/stdio.js";
@@ -369,29 +370,35 @@
 
-// src/proxy/transport-factory.ts
-import { StdioClientTransport } from "@modelcontextprotocol/sdk/client/stdio.js";
-import { StreamableHTTPClientTransport } from "@modelcontextprotocol/sdk/client/streamableHttp.js";
-import { SSEClientTransport } from "@modelcontextprotocol/sdk/client/sse.js";
-function createTransport(config) {
-  switch (config.transport) {
-    case "stdio":
-      return new StdioClientTransport({
-        command: config.command,
-        args: config.args,
-        env: config.env
-      });
-    case "streamable-http":
-      return new StreamableHTTPClientTransport(
-        new URL(config.url),
-        config.headers ? { requestInit: { headers: config.headers } } : void 0
-      );
-    case "sse":
-      return new SSEClientTransport(
-        new URL(config.url),
-        config.headers ? { requestInit: { headers: config.headers } } : void 0
-      );
-    default: {
-      const _exhaustive = config;
-      return _exhaustive;
+// src/proxy/orchestrator.ts
+import process4 from "process";
+
+// src/proxy/capability-aggregator.ts
+function aggregateCapabilities(upstreams) {
+  const aggregated = {
+    tools: { listChanged: true }
+  };
+  for (const caps of upstreams) {
+    if (caps === void 0) continue;
+    if (caps.resources !== void 0) {
+      aggregated.resources ??= {};
+      if (caps.resources.subscribe === true) {
+        aggregated.resources.subscribe = true;
+      }
+      if (caps.resources.listChanged === true) {
+        aggregated.resources.listChanged = true;
+      }
     }
+    if (caps.prompts !== void 0) {
+      aggregated.prompts ??= {};
+      if (caps.prompts.listChanged === true) {
+        aggregated.prompts.listChanged = true;
+      }
+    }
+    if (caps.logging !== void 0) {
+      aggregated.logging ??= {};
+    }
+    if (caps.completions !== void 0) {
+      aggregated.completions ??= {};
+    }
   }
+  return aggregated;
 }
@@ -502,11 +509,256 @@
 
+// src/proxy/notification-forwarder.ts
+var NotificationForwarder = class {
+  constructor(registry, resourceRouter, promptRouter, toolsByMcp, setToolCatalog, namespaced) {
+    this.registry = registry;
+    this.resourceRouter = resourceRouter;
+    this.promptRouter = promptRouter;
+    this.toolsByMcp = toolsByMcp;
+    this.setToolCatalog = setToolCatalog;
+    this.namespaced = namespaced;
+  }
+  registry;
+  resourceRouter;
+  promptRouter;
+  toolsByMcp;
+  setToolCatalog;
+  namespaced;
+  hostHandlers = {};
+  setHostHandlers(handlers) {
+    this.hostHandlers = handlers;
+  }
+  async handleToolsListChanged(mcpName2) {
+    const client = this.registry.get(mcpName2);
+    if (client === void 0) return;
+    const tools = await client.listTools().catch(() => []);
+    this.toolsByMcp.set(mcpName2, tools);
+    const rebuilt = this.namespaced ? ToolCatalog.fromGrouped(this.toolsByMcp) : ToolCatalog.fromFlat([...this.toolsByMcp.values()][0] ?? []);
+    this.setToolCatalog(rebuilt);
+    await this.hostHandlers.onToolsListChanged?.();
+  }
+  async handleResourcesListChanged(mcpName2) {
+    const router = this.resourceRouter();
+    const client = this.registry.get(mcpName2);
+    if (router === null || client === void 0) return;
+    const [resources, templates] = await Promise.all([
+      client.listResources().catch(() => []),
+      client.listResourceTemplates().catch(() => [])
+    ]);
+    router.setResources(mcpName2, resources);
+    router.setTemplates(mcpName2, templates);
+    await this.hostHandlers.onResourcesListChanged?.();
+  }
+  async handleResourceUpdated(params) {
+    await this.hostHandlers.onResourceUpdated?.(params);
+  }
+  async handlePromptsListChanged(mcpName2) {
+    const router = this.promptRouter();
+    const client = this.registry.get(mcpName2);
+    if (router === null || client === void 0) return;
+    const prompts = await client.listPrompts().catch(() => []);
+    router.setPrompts(mcpName2, prompts);
+    await this.hostHandlers.onPromptsListChanged?.();
+  }
+  /**
+   * Rewrites the upstream's `logger` field with the originating MCP's name as a
+   * prefix so the host can attribute log lines, then forwards the message to the
+   * host's log message handler.
+   */
+  async handleLogMessage(mcpName2, params) {
+    const handler = this.hostHandlers.onLogMessage;
+    if (handler === void 0) return;
+    if (!this.namespaced) {
+      await handler(params);
+      return;
+    }
+    const prefixed = {
+      ...params,
+      logger: params.logger === void 0 ? mcpName2 : `${mcpName2}/${params.logger}`
+    };
+    await handler(prefixed);
+  }
+};
+
+// src/proxy/prompt-router.ts
+var PromptRouter = class {
+  mcpOrder;
+  perMcp;
+  nameOwners = /* @__PURE__ */ new Map();
+  detectedCollisions = [];
+  constructor(mcpOrder) {
+    this.mcpOrder = [...mcpOrder];
+    this.perMcp = new Map(this.mcpOrder.map((name) => [name, []]));
+  }
+  setPrompts(mcpName2, prompts) {
+    const entry = this.perMcp.get(mcpName2);
+    if (entry === void 0) {
+      throw new Error(`PromptRouter: unknown mcp "${mcpName2}"`);
+    }
+    this.perMcp.set(mcpName2, [...prompts]);
+    this.rebuild();
+  }
+  aggregatedPrompts() {
+    const result = [];
+    for (const mcpName2 of this.mcpOrder) {
+      const entry = this.perMcp.get(mcpName2);
+      if (entry !== void 0) {
+        result.push(...entry);
+      }
+    }
+    return result;
+  }
+  ownerOf(promptName) {
+    return this.nameOwners.get(promptName);
+  }
+  collisions() {
+    return this.detectedCollisions;
+  }
+  rebuild() {
+    this.nameOwners = /* @__PURE__ */ new Map();
+    const collisions = [];
+    for (const mcpName2 of this.mcpOrder) {
+      const prompts = this.perMcp.get(mcpName2);
+      if (prompts === void 0) continue;
+      for (const prompt of prompts) {
+        const existing = this.nameOwners.get(prompt.name);
+        if (existing === void 0) {
+          this.nameOwners.set(prompt.name, mcpName2);
+        } else {
+          collisions.push({ name: prompt.name, chosen: existing, shadowed: mcpName2 });
+        }
+      }
+    }
+    this.detectedCollisions = collisions;
+  }
+};
+
+// src/proxy/resource-router.ts
+var ResourceRouter = class {
+  mcpOrder;
+  perMcp;
+  uriOwners = /* @__PURE__ */ new Map();
+  templateOwners = [];
+  detectedCollisions = [];
+  constructor(mcpOrder) {
+    this.mcpOrder = [...mcpOrder];
+    this.perMcp = new Map(
+      this.mcpOrder.map((name) => [name, { resources: [], templates: [] }])
+    );
+  }
+  setResources(mcpName2, resources) {
+    const entry = this.perMcp.get(mcpName2);
+    if (entry === void 0) {
+      throw new Error(`ResourceRouter: unknown mcp "${mcpName2}"`);
+    }
+    entry.resources = [...resources];
+    this.rebuild();
+  }
+  setTemplates(mcpName2, templates) {
+    const entry = this.perMcp.get(mcpName2);
+    if (entry === void 0) {
+      throw new Error(`ResourceRouter: unknown mcp "${mcpName2}"`);
+    }
+    entry.templates = [...templates];
+    this.rebuild();
+  }
+  aggregatedResources() {
+    const result = [];
+    for (const mcpName2 of this.mcpOrder) {
+      const entry = this.perMcp.get(mcpName2);
+      if (entry !== void 0) {
+        result.push(...entry.resources);
+      }
+    }
+    return result;
+  }
+  aggregatedTemplates() {
+    const result = [];
+    for (const mcpName2 of this.mcpOrder) {
+      const entry = this.perMcp.get(mcpName2);
+      if (entry !== void 0) {
+        result.push(...entry.templates);
+      }
+    }
+    return result;
+  }
+  /**
+   * Returns the mcpName that owns the given URI, or undefined if no upstream advertises it.
+   * Concrete URI matches take precedence over template prefix matches; templates are tried
+   * in config-file order (first-wins).
+   */
+  ownerOf(uri) {
+    const concrete = this.uriOwners.get(uri);
+    if (concrete !== void 0) {
+      return concrete;
+    }
+    for (const { prefix, mcpName: mcpName2 } of this.templateOwners) {
+      if (prefix.length > 0 && uri.startsWith(prefix)) {
+        return mcpName2;
+      }
+    }
+    return void 0;
+  }
+  collisions() {
+    return this.detectedCollisions;
+  }
+  rebuild() {
+    this.uriOwners = /* @__PURE__ */ new Map();
+    this.templateOwners = [];
+    const collisions = [];
+    for (const mcpName2 of this.mcpOrder) {
+      const entry = this.perMcp.get(mcpName2);
+      if (entry === void 0) continue;
+      for (const resource of entry.resources) {
+        const existing = this.uriOwners.get(resource.uri);
+        if (existing === void 0) {
+          this.uriOwners.set(resource.uri, mcpName2);
+        } else {
+          collisions.push({ uri: resource.uri, chosen: existing, shadowed: mcpName2 });
+        }
+      }
+      for (const template of entry.templates) {
+        this.templateOwners.push({
+          prefix: literalPrefixOf(template.uriTemplate),
+          template,
+          mcpName: mcpName2
+        });
+      }
+    }
+    this.detectedCollisions = collisions;
+  }
+};
+function literalPrefixOf(uriTemplate) {
+  const idx = uriTemplate.indexOf("{");
+  return idx === -1 ? uriTemplate : uriTemplate.slice(0, idx);
+}
+
 // src/proxy/upstream-client.ts
 import process3 from "process";
 import { Client } from "@modelcontextprotocol/sdk/client/index.js";
+import {
+  CreateMessageRequestSchema,
+  ElicitRequestSchema,
+  ListRootsRequestSchema,
+  LoggingMessageNotificationSchema,
+  PromptListChangedNotificationSchema,
+  ResourceListChangedNotificationSchema,
+  ResourceUpdatedNotificationSchema,
+  ToolListChangedNotificationSchema
+} from "@modelcontextprotocol/sdk/types.js";
 var UpstreamClient = class {
   transport;
   onTransportError;
+  notificationHandlers;
+  serverRequestHandlers;
   client = null;
-  constructor({ name, transport, onTransportError }) {
+  constructor({
+    name,
+    transport,
+    onTransportError,
+    notifications,
+    serverRequests
+  }) {
     this.transport = transport;
+    this.notificationHandlers = notifications ?? {};
+    this.serverRequestHandlers = serverRequests ?? {};
     this.onTransportError = onTransportError ?? ((error) => {
@@ -519,10 +771,76 @@ process3.stderr.write(`[${name}] Upstream MCP transport error: ${error.message}
     this.transport.onerror = this.onTransportError;
-    this.client = new Client({ name: "dynamic-discovery-mcp", version: "1.0.0" });
+    this.client = new Client(
+      { name: "dynamic-discovery-mcp", version: "1.0.0" },
+      {
+        capabilities: {
+          // Declare every client-side capability the proxy may relay on behalf of the host.
+          // Actual reachability of each feature depends on what the host supports — if the
+          // host does not support sampling, for instance, the host call returns an error
+          // which we forward back to the upstream verbatim.
+          sampling: {},
+          elicitation: {},
+          roots: { listChanged: true }
+        }
+      }
+    );
+    this.registerServerRequestHandlers(this.client);
+    if (this.notificationHandlers.onToolsListChanged !== void 0) {
+      this.client.setNotificationHandler(ToolListChangedNotificationSchema, async () => {
+        await this.notificationHandlers.onToolsListChanged?.();
+      });
+    }
+    if (this.notificationHandlers.onResourcesListChanged !== void 0) {
+      this.client.setNotificationHandler(ResourceListChangedNotificationSchema, async () => {
+        await this.notificationHandlers.onResourcesListChanged?.();
+      });
+    }
+    if (this.notificationHandlers.onResourceUpdated !== void 0) {
+      this.client.setNotificationHandler(ResourceUpdatedNotificationSchema, async (notification) => {
+        await this.notificationHandlers.onResourceUpdated?.({ uri: notification.params.uri });
+      });
+    }
+    if (this.notificationHandlers.onPromptsListChanged !== void 0) {
+      this.client.setNotificationHandler(PromptListChangedNotificationSchema, async () => {
+        await this.notificationHandlers.onPromptsListChanged?.();
+      });
+    }
+    if (this.notificationHandlers.onLogMessage !== void 0) {
+      this.client.setNotificationHandler(LoggingMessageNotificationSchema, async (notification) => {
+        await this.notificationHandlers.onLogMessage?.(notification.params);
+      });
+    }
     await this.client.connect(this.transport);
   }
-  async listTools() {
-    if (this.client === null) {
-      throw new Error("Client is not connected. Call connect() first.");
+  async setLoggingLevel(level, options) {
+    const client = this.requireClient();
+    await client.setLoggingLevel(level, options);
+  }
+  async listPrompts(options) {
+    const client = this.requireClient();
+    const result = await client.listPrompts(void 0, options);
+    return result.prompts;
+  }
+  async getPrompt(name, args, options) {
+    const client = this.requireClient();
+    const params = { name };
+    if (args !== void 0) {
+      params.arguments = args;
     }
-    const result = await this.client.listTools();
+    return client.getPrompt(params, options);
+  }
+  async complete(params, options) {
+    const client = this.requireClient();
+    return client.complete(params, options);
+  }
+  /**
+   * Returns the capabilities advertised by the upstream server during initialize.
+   * Returns `undefined` if the client is not connected, or if the SDK has not yet
+   * recorded the server's capabilities (e.g. during a partially-completed handshake).
+   */
+  getCapabilities() {
+    return this.client?.getServerCapabilities();
+  }
+  async listTools(options) {
+    const client = this.requireClient();
+    const result = await client.listTools(void 0, options);
     return result.tools.map((tool) => {
@@ -549,9 +867,29 @@ const upstreamTool = {
   }
-  async callTool(name, input) {
-    if (this.client === null) {
-      throw new Error("Client is not connected. Call connect() first.");
-    }
-    const result = await this.client.callTool({ name, arguments: input });
+  async callTool(name, input, options) {
+    const client = this.requireClient();
+    const result = await client.callTool({ name, arguments: input }, void 0, options);
     return result;
   }
+  async listResources(options) {
+    const client = this.requireClient();
+    const result = await client.listResources(void 0, options);
+    return result.resources;
+  }
+  async listResourceTemplates(options) {
+    const client = this.requireClient();
+    const result = await client.listResourceTemplates(void 0, options);
+    return result.resourceTemplates;
+  }
+  async readResource(uri, options) {
+    const client = this.requireClient();
+    return client.readResource({ uri }, options);
+  }
+  async subscribeResource(uri, options) {
+    const client = this.requireClient();
+    await client.subscribeResource({ uri }, options);
+  }
+  async unsubscribeResource(uri, options) {
+    const client = this.requireClient();
+    await client.unsubscribeResource({ uri }, options);
+  }
   async disconnect() {
@@ -564,27 +902,65 @@ if (this.client === null) {
   }
+  /**
+   * Sends `notifications/roots/list_changed` to the upstream, letting it know that
+   * the host's set of filesystem roots has changed.
+   */
+  async sendRootsListChanged() {
+    const client = this.requireClient();
+    await client.sendRootsListChanged();
+  }
+  registerServerRequestHandlers(client) {
+    if (this.serverRequestHandlers.onCreateMessage !== void 0) {
+      client.setRequestHandler(
+        CreateMessageRequestSchema,
+        async (request, extra) => {
+          return this.serverRequestHandlers.onCreateMessage(request.params, {
+            signal: extra.signal
+          });
+        }
+      );
+    }
+    if (this.serverRequestHandlers.onElicitInput !== void 0) {
+      client.setRequestHandler(
+        ElicitRequestSchema,
+        async (request, extra) => {
+          return this.serverRequestHandlers.onElicitInput(request.params, {
+            signal: extra.signal
+          });
+        }
+      );
+    }
+    if (this.serverRequestHandlers.onListRoots !== void 0) {
+      client.setRequestHandler(
+        ListRootsRequestSchema,
+        async (request, extra) => {
+          return this.serverRequestHandlers.onListRoots(request.params, {
+            signal: extra.signal
+          });
+        }
+      );
+    }
+  }
+  requireClient() {
+    if (this.client === null) {
+      throw new Error("Client is not connected. Call connect() first.");
+    }
+    return this.client;
+  }
 };
 
-// src/proxy/orchestrator.ts
-var Orchestrator = class {
-  config;
+// src/proxy/upstream-registry.ts
+var UpstreamRegistry = class {
   clients = /* @__PURE__ */ new Map();
-  toolCatalog = null;
-  constructor(config) {
-    this.config = config;
-  }
-  async connect() {
-    const groups = /* @__PURE__ */ new Map();
+  async connectAll(entries) {
     try {
-      for (const [mcpName2, { transport }] of this.config.mcps) {
+      for (const [mcpName2, config] of entries) {
         const client = new UpstreamClient({
           name: mcpName2,
-          transport,
-          onTransportError: (error) => {
-            this.config.onTransportError?.(mcpName2, error);
-          }
+          transport: config.transport,
+          onTransportError: config.onTransportError,
+          notifications: config.notifications,
+          serverRequests: config.serverRequests
         });
         await client.connect();
-        const tools = await client.listTools();
         this.clients.set(mcpName2, client);
-        groups.set(mcpName2, tools);
       }
@@ -595,4 +971,127 @@ } catch (error) {
     }
-    this.toolCatalog = ToolCatalog.fromGrouped(groups);
   }
+  get(mcpName2) {
+    return this.clients.get(mcpName2);
+  }
+  /**
+   * Returns the sole connected client. Used by single-MCP (`--`) mode where the
+   * Orchestrator guarantees there is exactly one upstream. Returns undefined when
+   * zero or more than one client is connected.
+   */
+  sole() {
+    if (this.clients.size !== 1) return void 0;
+    return this.clients.values().next().value;
+  }
+  names() {
+    return [...this.clients.keys()];
+  }
+  entries() {
+    return this.clients.entries();
+  }
+  size() {
+    return this.clients.size;
+  }
+  async disconnectAll() {
+    const disconnections = [...this.clients.values()].map((client) => client.disconnect());
+    await Promise.all(disconnections);
+    this.clients.clear();
+  }
+};
+
+// src/proxy/orchestrator.ts
+var Orchestrator = class {
+  config;
+  registry = new UpstreamRegistry();
+  toolsByMcp = /* @__PURE__ */ new Map();
+  resourceRouter = null;
+  promptRouter = null;
+  toolCatalog = null;
+  aggregatedCapabilities = null;
+  serverRequestForwarders = {};
+  forwarder;
+  constructor(config) {
+    if (!config.namespaced && config.mcps.size !== 1) {
+      throw new Error(
+        `Single-MCP (non-namespaced) mode requires exactly one upstream; got ${config.mcps.size}.`
+      );
+    }
+    this.config = config;
+    this.forwarder = new NotificationForwarder(
+      this.registry,
+      () => this.resourceRouter,
+      () => this.promptRouter,
+      this.toolsByMcp,
+      (catalog) => {
+        this.toolCatalog = catalog;
+      },
+      this.config.namespaced
+    );
+  }
+  setNotificationHandlers(handlers) {
+    this.forwarder.setHostHandlers(handlers);
+  }
+  setServerRequestForwarders(forwarders) {
+    this.serverRequestForwarders = forwarders;
+  }
+  async connect() {
+    const resourceRouter = new ResourceRouter([...this.config.mcps.keys()]);
+    const promptRouter = new PromptRouter([...this.config.mcps.keys()]);
+    const upstreamEntries = [
+      ...this.config.mcps
+    ].map(([mcpName2, { transport }]) => [
+      mcpName2,
+      {
+        transport,
+        onTransportError: (error) => {
+          this.config.onTransportError?.(mcpName2, error);
+        },
+        notifications: {
+          onToolsListChanged: () => this.forwarder.handleToolsListChanged(mcpName2),
+          onResourcesListChanged: () => this.forwarder.handleResourcesListChanged(mcpName2),
+          onResourceUpdated: (params) => this.forwarder.handleResourceUpdated(params),
+          onPromptsListChanged: () => this.forwarder.handlePromptsListChanged(mcpName2),
+          onLogMessage: (params) => this.forwarder.handleLogMessage(mcpName2, params)
+        },
+        serverRequests: {
+          onCreateMessage: (params, opts) => this.forwardCreateMessage(params, opts),
+          onElicitInput: (params, opts) => this.forwardElicitInput(params, opts),
+          onListRoots: (params, opts) => this.forwardListRoots(params, opts)
+        }
+      }
+    ]);
+    await this.registry.connectAll(upstreamEntries);
+    const capabilityList = [];
+    this.toolsByMcp.clear();
+    for (const [mcpName2, client] of this.registry.entries()) {
+      const caps = client.getCapabilities();
+      capabilityList.push(caps);
+      const tools = await client.listTools();
+      this.toolsByMcp.set(mcpName2, tools);
+      if (caps?.resources !== void 0) {
+        const [resources, templates] = await Promise.all([
+          client.listResources().catch(() => []),
+          client.listResourceTemplates().catch(() => [])
+        ]);
+        resourceRouter.setResources(mcpName2, resources);
+        resourceRouter.setTemplates(mcpName2, templates);
+      }
+      if (caps?.prompts !== void 0) {
+        const prompts = await client.listPrompts().catch(() => []);
+        promptRouter.setPrompts(mcpName2, prompts);
+      }
+    }
+    this.toolCatalog = this.config.namespaced ? ToolCatalog.fromGrouped(this.toolsByMcp) : ToolCatalog.fromFlat([...this.toolsByMcp.values()][0] ?? []);
+    this.aggregatedCapabilities = aggregateCapabilities(capabilityList);
+    this.resourceRouter = resourceRouter;
+    this.promptRouter = promptRouter;
+    logCollisions(resourceRouter, promptRouter);
+  }
+  async disconnectAll() {
+    await this.registry.disconnectAll();
+    this.toolsByMcp.clear();
+    this.toolCatalog = null;
+    this.aggregatedCapabilities = null;
+    this.resourceRouter = null;
+    this.promptRouter = null;
+  }
   get catalog() {
@@ -604,126 +1103,504 @@ if (this.toolCatalog === null) {
   }
-  async callTool(namespacedName, input) {
-    const separatorIndex = namespacedName.indexOf("/");
-    if (separatorIndex === -1) {
-      throw new Error(
-        `Invalid namespaced tool name: "${namespacedName}". Expected format: "mcpName/toolName".`
-      );
+  get capabilities() {
+    if (this.aggregatedCapabilities === null) {
+      throw new Error("Orchestrator is not connected. Call connect() first.");
     }
-    const mcpName2 = namespacedName.slice(0, separatorIndex);
-    const toolName = namespacedName.slice(separatorIndex + 1);
-    const client = this.clients.get(mcpName2);
+    return this.aggregatedCapabilities;
+  }
+  // === Forward-direction request routing ===
+  async callTool(displayName, input, options) {
+    if (this.config.namespaced) {
+      const { mcpName: mcpName2, toolName } = splitNamespacedName(displayName, this.registry.names());
+      return this.requireClient(mcpName2, "tool").callTool(toolName, input, options);
+    }
+    const sole = this.registry.sole();
+    if (sole === void 0) {
+      throw new Error("Orchestrator is not connected. Call connect() first.");
+    }
+    return sole.callTool(displayName, input, options);
+  }
+  listResources() {
+    return this.requireResourceRouter().aggregatedResources();
+  }
+  listResourceTemplates() {
+    return this.requireResourceRouter().aggregatedTemplates();
+  }
+  async readResource(uri, options) {
+    return this.resolveResourceOwner(uri).readResource(uri, options);
+  }
+  async subscribeResource(uri, options) {
+    await this.resolveResourceOwner(uri).subscribeResource(uri, options);
+  }
+  async unsubscribeResource(uri, options) {
+    await this.resolveResourceOwner(uri).unsubscribeResource(uri, options);
+  }
+  listPrompts() {
+    return this.requirePromptRouter().aggregatedPrompts();
+  }
+  async getPrompt(name, args, options) {
+    return this.resolvePromptOwner(name).getPrompt(name, args, options);
+  }
+  async complete(params, options) {
+    const client = this.resolveCompletionTarget(params.ref);
+    return client.complete(params, options);
+  }
+  // === Broadcasts ===
+  /**
+   * Broadcasts a `logging/setLevel` request to every upstream advertising the logging
+   * capability. Errors from individual upstreams are swallowed so a single misbehaving
+   * upstream cannot break the broadcast for others; failures are written to stderr.
+   */
+  async setLoggingLevel(level, options) {
+    await this.broadcastAsync(
+      (client) => client.getCapabilities()?.logging !== void 0 ? client.setLoggingLevel(level, options) : Promise.resolve(),
+      "setLoggingLevel"
+    );
+  }
+  /**
+   * Broadcasts `notifications/roots/list_changed` to every connected upstream — the
+   * proxy declares roots capability uniformly to all upstreams so every one of them
+   * may have requested roots and needs to know the list changed.
+   */
+  async broadcastRootsListChanged() {
+    await this.broadcastAsync((client) => client.sendRootsListChanged(), "sendRootsListChanged");
+  }
+  // === Server-initiated request forwarders (upstream → host) ===
+  async forwardCreateMessage(params, options) {
+    const handler = this.serverRequestForwarders.onCreateMessage;
+    if (handler === void 0) {
+      throw new Error("Proxy does not support sampling: host has not registered a handler.");
+    }
+    return handler(params, options);
+  }
+  async forwardElicitInput(params, options) {
+    const handler = this.serverRequestForwarders.onElicitInput;
+    if (handler === void 0) {
+      throw new Error("Proxy does not support elicitation: host has not registered a handler.");
+    }
+    return handler(params, options);
+  }
+  async forwardListRoots(params, options) {
+    const handler = this.serverRequestForwarders.onListRoots;
+    if (handler === void 0) {
+      throw new Error("Proxy does not support roots: host has not registered a handler.");
+    }
+    return handler(params, options);
+  }
+  // === Internal helpers ===
+  requireResourceRouter() {
+    if (this.resourceRouter === null) {
+      throw new Error("Orchestrator is not connected. Call connect() first.");
+    }
+    return this.resourceRouter;
+  }
+  requirePromptRouter() {
+    if (this.promptRouter === null) {
+      throw new Error("Orchestrator is not connected. Call connect() first.");
+    }
+    return this.promptRouter;
+  }
+  resolveResourceOwner(uri) {
+    const owner = this.requireResourceRouter().ownerOf(uri);
+    if (owner === void 0) {
+      throw new Error(`Unknown resource URI: "${uri}". No upstream MCP advertises it.`);
+    }
+    return this.requireClient(owner, "resource");
+  }
+  resolvePromptOwner(name) {
+    const owner = this.requirePromptRouter().ownerOf(name);
+    if (owner === void 0) {
+      throw new Error(`Unknown prompt: "${name}". No upstream MCP advertises it.`);
+    }
+    return this.requireClient(owner, "prompt");
+  }
+  resolveCompletionTarget(ref) {
+    if (ref.type === "ref/prompt") {
+      return this.resolvePromptOwner(ref.name);
+    }
+    if (ref.type === "ref/resource") {
+      return this.resolveResourceOwner(ref.uri);
+    }
+    const unknownRef = ref;
+    throw new Error(`Unsupported completion ref type: "${unknownRef.type}"`);
+  }
+  requireClient(mcpName2, role) {
+    const client = this.registry.get(mcpName2);
     if (client === void 0) {
-      const available = [...this.clients.keys()].sort().join(", ");
-      throw new Error(`Unknown MCP: "${mcpName2}". Available MCPs: ${available}`);
+      throw new Error(`Internal error: ${role} owner "${mcpName2}" has no connected client.`);
     }
-    return client.callTool(toolName, input);
+    return client;
   }
-  async disconnectAll() {
-    const disconnections = [...this.clients.values()].map((client) => client.disconnect());
-    await Promise.all(disconnections);
-    this.clients.clear();
-    this.toolCatalog = null;
+  async broadcastAsync(action, label) {
+    const targets = [];
+    for (const [mcpName2, client] of this.registry.entries()) {
+      targets.push(
+        action(client).catch((error) => {
+          const message = error instanceof Error ? error.message : String(error);
+          process4.stderr.write(`dynmcp: ${label} failed for "${mcpName2}": ${message}
+`);
+        })
+      );
+    }
+    await Promise.all(targets);
   }
 };
+function splitNamespacedName(namespacedName, knownMcpNames) {
+  const separatorIndex = namespacedName.indexOf("/");
+  if (separatorIndex === -1) {
+    throw new Error(
+      `Invalid namespaced tool name: "${namespacedName}". Expected format: "mcpName/toolName".`
+    );
+  }
+  const mcpName2 = namespacedName.slice(0, separatorIndex);
+  const toolName = namespacedName.slice(separatorIndex + 1);
+  if (!knownMcpNames.includes(mcpName2)) {
+    const available = [...knownMcpNames].sort().join(", ");
+    throw new Error(`Unknown MCP: "${mcpName2}". Available MCPs: ${available}`);
+  }
+  return { mcpName: mcpName2, toolName };
+}
+function logCollisions(resourceRouter, promptRouter) {
+  for (const collision of resourceRouter.collisions()) {
+    process4.stderr.write(
+      `dynmcp: resource URI collision: "${collision.uri}" is provided by "${collision.chosen}" and "${collision.shadowed}"; routing to "${collision.chosen}".
+`
+    );
+  }
+  for (const collision of promptRouter.collisions()) {
+    process4.stderr.write(
+      `dynmcp: prompt name collision: "${collision.name}" is provided by "${collision.chosen}" and "${collision.shadowed}"; routing to "${collision.chosen}".
+`
+    );
+  }
+}
 
 // src/proxy/server.ts
-import process4 from "process";
-import { FastMCP } from "fastmcp";
+import process5 from "process";
+import { Server } from "@modelcontextprotocol/sdk/server/index.js";
+import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio.js";
+import {
+  CallToolRequestSchema,
+  CompleteRequestSchema,
+  GetPromptRequestSchema,
+  ListPromptsRequestSchema,
+  ListResourcesRequestSchema,
+  ListResourceTemplatesRequestSchema,
+  ListToolsRequestSchema,
+  ReadResourceRequestSchema,
+  RootsListChangedNotificationSchema,
+  SetLevelRequestSchema,
+  SubscribeRequestSchema,
+  UnsubscribeRequestSchema
+} from "@modelcontextprotocol/sdk/types.js";
 import { z as z3 } from "zod";
+var DISCOVER_TOOL_NAME = "discover_tool";
+var USE_TOOL_NAME = "use_tool";
+var USE_TOOL_DESCRIPTION = "Use a tool that was previously discovered with the discover_tool tool.";
+var DISCOVER_TOOL_INPUT_SCHEMA = {
+  type: "object",
+  properties: {
+    tool_name: { type: "string" }
+  },
+  required: ["tool_name"]
+};
+var USE_TOOL_INPUT_SCHEMA = {
+  type: "object",
+  properties: {
+    tool_name: { type: "string" },
+    tool_input: { type: "object", additionalProperties: true, default: {} }
+  },
+  required: ["tool_name"]
+};
+var DiscoverToolArgsSchema = z3.object({ tool_name: z3.string() });
+var UseToolArgsSchema = z3.object({
+  tool_name: z3.string(),
+  tool_input: z3.record(z3.string(), z3.unknown()).default({})
+});
 var ProxyServer = class {
   catalog;
   callTool;
-  constructor({ catalog, callTool }) {
+  capabilities;
+  resources;
+  prompts;
+  complete;
+  setLoggingLevelCallback;
+  onRootsListChangedCallback;
+  sdkServer = null;
+  constructor({
+    catalog,
+    callTool,
+    capabilities,
+    resources,
+    prompts,
+    complete,
+    setLoggingLevel,
+    onRootsListChanged
+  }) {
     this.catalog = catalog;
     this.callTool = callTool;
+    this.capabilities = capabilities;
+    this.resources = resources;
+    this.prompts = prompts;
+    this.complete = complete;
+    this.setLoggingLevelCallback = setLoggingLevel;
+    this.onRootsListChangedCallback = onRootsListChanged;
   }
+  buildServer() {
+    const server = new Server(
+      {
+        name: "dynamic-discovery-mcp",
+        version: package_default.version
+      },
+      {
+        capabilities: this.capabilities
+      }
+    );
+    this.registerToolHandlers(server);
+    if (this.capabilities.resources !== void 0 && this.resources !== void 0) {
+      this.registerResourceHandlers(server, this.resources);
+    }
+    if (this.capabilities.prompts !== void 0 && this.prompts !== void 0) {
+      this.registerPromptHandlers(server, this.prompts);
+    }
+    if (this.capabilities.completions !== void 0 && this.complete !== void 0) {
+      this.registerCompletionHandler(server, this.complete);
+    }
+    if (this.capabilities.logging !== void 0 && this.setLoggingLevelCallback !== void 0) {
+      this.registerLoggingHandler(server, this.setLoggingLevelCallback);
+    }
+    if (this.onRootsListChangedCallback !== void 0) {
+      const callback = this.onRootsListChangedCallback;
+      server.setNotificationHandler(RootsListChangedNotificationSchema, async () => {
+        await callback();
+      });
+    }
+    this.sdkServer = server;
+    return server;
+  }
+  /**
+   * Forwards an upstream-initiated `sampling/createMessage` request to the host. The
+   * upstream's abort signal is threaded through so cancellation by the upstream
+   * propagates to the host.
+   */
+  async forwardCreateMessage(params, options) {
+    const server = this.requireSdkServer();
+    return server.createMessage(params, options);
+  }
+  /**
+   * Forwards an upstream-initiated `elicitation/create` request to the host.
+   */
+  async forwardElicitInput(params, options) {
+    const server = this.requireSdkServer();
+    return server.elicitInput(params, options);
+  }
+  /**
+   * Forwards an upstream-initiated `roots/list` request to the host.
+   */
+  async forwardListRoots(params, options) {
+    const server = this.requireSdkServer();
+    return server.listRoots(params, options);
+  }
+  requireSdkServer() {
+    if (this.sdkServer === null) {
+      throw new Error("ProxyServer is not built. Call buildServer() before forwarding requests.");
+    }
+    return this.sdkServer;
+  }
   async start() {
-    const server = new FastMCP({
-      name: "dynamic-discovery-mcp",
-      version: package_default.version
-    });
-    server.addTool({
-      name: "discover_tool",
-      description: this.catalog.discoverToolDescription,
-      parameters: z3.object({ tool_name: z3.string() }),
-      execute: async ({ tool_name }) => {
-        return this.catalog.getToolDetails(tool_name);
+    const server = this.buildServer();
+    const transport = new StdioServerTransport();
+    process5.stderr.write("Starting dynamic-discovery-mcp server over stdio\n");
+    await server.connect(transport);
+  }
+  /**
+   * Notifies the host that the discover_tool description has changed because an upstream
+   * emitted `notifications/tools/list_changed`. The host should re-fetch the tools list
+   * to pick up the regenerated catalog. Silently no-ops if `buildServer()` has not been
+   * called yet.
+   */
+  async sendToolListChanged() {
+    if (this.sdkServer !== null) {
+      await this.sdkServer.sendToolListChanged();
+    }
+  }
+  /**
+   * Notifies the host that the proxy's aggregated resource list has changed. Silently
+   * no-ops if `buildServer()` has not been called yet. Errors propagate.
+   */
+  async sendResourceListChanged() {
+    if (this.sdkServer !== null) {
+      await this.sdkServer.sendResourceListChanged();
+    }
+  }
+  /**
+   * Notifies the host that a specific subscribed resource has changed. Silently no-ops
+   * if `buildServer()` has not been called yet.
+   */
+  async sendResourceUpdated(params) {
+    if (this.sdkServer !== null) {
+      await this.sdkServer.sendResourceUpdated(params);
+    }
+  }
+  /**
+   * Notifies the host that the proxy's aggregated prompt list has changed. Silently
+   * no-ops if `buildServer()` has not been called yet.
+   */
+  async sendPromptListChanged() {
+    if (this.sdkServer !== null) {
+      await this.sdkServer.sendPromptListChanged();
+    }
+  }
+  registerToolHandlers(server) {
+    server.setRequestHandler(ListToolsRequestSchema, async () => ({
+      tools: [
+        {
+          name: DISCOVER_TOOL_NAME,
+          description: this.catalog().discoverToolDescription,
+          inputSchema: DISCOVER_TOOL_INPUT_SCHEMA
+        },
+        {
+          name: USE_TOOL_NAME,
+          description: USE_TOOL_DESCRIPTION,
+          inputSchema: USE_TOOL_INPUT_SCHEMA
+        }
+      ]
+    }));
+    server.setRequestHandler(
+      CallToolRequestSchema,
+      async (request, extra) => {
+        const { name, arguments: rawArgs } = request.params;
+        const catalog = this.catalog();
+        if (name === DISCOVER_TOOL_NAME) {
+          const args = DiscoverToolArgsSchema.parse(rawArgs ?? {});
+          return {
+            content: [{ type: "text", text: catalog.getToolDetails(args.tool_name) }]
+          };
+        }
+        if (name === USE_TOOL_NAME) {
+          const args = UseToolArgsSchema.parse(rawArgs ?? {});
+          if (!catalog.tools.has(args.tool_name)) {
+            return {
+              content: [{ type: "text", text: catalog.getToolDetails(args.tool_name) }]
+            };
+          }
+          return await this.callTool(args.tool_name, args.tool_input, { signal: extra.signal });
+        }
+        return {
+          isError: true,
+          content: [{ type: "text", text: `Unknown tool: "${name}"` }]
+        };
       }
+    );
+  }
+  registerResourceHandlers(server, callbacks) {
+    server.setRequestHandler(
+      ListResourcesRequestSchema,
+      async () => ({
+        resources: callbacks.listResources()
+      })
+    );
+    server.setRequestHandler(
+      ListResourceTemplatesRequestSchema,
+      async () => ({
+        resourceTemplates: callbacks.listResourceTemplates()
+      })
+    );
+    server.setRequestHandler(
+      ReadResourceRequestSchema,
+      async (request, extra) => {
+        return callbacks.readResource(request.params.uri, { signal: extra.signal });
+      }
+    );
+    server.setRequestHandler(SubscribeRequestSchema, async (request, extra) => {
+      await callbacks.subscribeResource(request.params.uri, { signal: extra.signal });
+      return {};
     });
-    server.addTool({
-      name: "use_tool",
-      description: "Use a tool that was previously discovered with the discover_tool tool.",
-      parameters: z3.object({
-        tool_name: z3.string(),
-        tool_input: z3.record(z3.string(), z3.unknown()).default({})
-      }),
-      execute: async ({ tool_name, tool_input }) => {
-        if (!this.catalog.tools.has(tool_name)) {
-          return this.catalog.getToolDetails(tool_name);
-        }
-        const result = await this.callTool(tool_name, tool_input);
-        return result;
+    server.setRequestHandler(UnsubscribeRequestSchema, async (request, extra) => {
+      await callbacks.unsubscribeResource(request.params.uri, { signal: extra.signal });
+      return {};
+    });
+  }
+  registerPromptHandlers(server, callbacks) {
+    server.setRequestHandler(
+      ListPromptsRequestSchema,
+      async () => ({
+        prompts: callbacks.listPrompts()
+      })
+    );
+    server.setRequestHandler(
+      GetPromptRequestSchema,
+      async (request, extra) => {
+        return callbacks.getPrompt(request.params.name, request.params.arguments, {
+          signal: extra.signal
+        });
       }
+    );
+  }
+  registerCompletionHandler(server, callback) {
+    server.setRequestHandler(
+      CompleteRequestSchema,
+      async (request, extra) => {
+        return callback(request.params, { signal: extra.signal });
+      }
+    );
+  }
+  registerLoggingHandler(server, callback) {
+    server.setRequestHandler(SetLevelRequestSchema, async (request, extra) => {
+      await callback(request.params.level, { signal: extra.signal });
+      return {};
     });
-    process4.stderr.write("Starting dynamic-discovery-mcp server over stdio\n");
-    await server.start({ transportType: "stdio" });
   }
+  /**
+   * Forwards a log message from an upstream MCP to the host. Silently no-ops if
+   * `buildServer()` has not been called yet.
+   */
+  async sendLoggingMessage(params) {
+    if (this.sdkServer !== null) {
+      await this.sdkServer.sendLoggingMessage(params);
+    }
+  }
 };
 
+// src/proxy/transport-factory.ts
+import { StdioClientTransport } from "@modelcontextprotocol/sdk/client/stdio.js";
+import { StreamableHTTPClientTransport } from "@modelcontextprotocol/sdk/client/streamableHttp.js";
+import { SSEClientTransport } from "@modelcontextprotocol/sdk/client/sse.js";
+function createTransport(config) {
+  switch (config.transport) {
+    case "stdio":
+      return new StdioClientTransport({
+        command: config.command,
+        args: config.args,
+        env: config.env
+      });
+    case "streamable-http":
+      return new StreamableHTTPClientTransport(
+        new URL(config.url),
+        config.headers ? { requestInit: { headers: config.headers } } : void 0
+      );
+    case "sse":
+      return new SSEClientTransport(
+        new URL(config.url),
+        config.headers ? { requestInit: { headers: config.headers } } : void 0
+      );
+    default: {
+      const _exhaustive = config;
+      return _exhaustive;
+    }
+  }
+}
+
 // src/proxy/index.ts
+var SINGLE_MCP_NAME = "__default__";
 async function startProxy(command, args) {
-  let isShuttingDown = false;
   const transport = new StdioClientTransport2({ command, args });
-  const upstreamClient = new UpstreamClient({
-    name: command,
-    transport,
-    onTransportError: (error) => {
-      process5.stderr.write(`Upstream MCP transport error: ${error.message}
-`);
-      shutdown(1);
-    }
+  const mcps = /* @__PURE__ */ new Map([[SINGLE_MCP_NAME, { transport }]]);
+  const orchestrator = buildOrchestrator({
+    mcps,
+    namespaced: false,
+    transportErrorPrefix: () => "Upstream MCP"
   });
-  const shutdown = (exitCode) => {
-    if (isShuttingDown) return;
-    isShuttingDown = true;
-    upstreamClient.disconnect().catch((error) => {
-      process5.stderr.write(
-        `dynmcp: error during disconnect: ${error instanceof Error ? error.message : String(error)}
-`
-      );
-    }).finally(() => process5.exit(exitCode));
-  };
-  try {
-    await upstreamClient.connect();
-  } catch (error) {
-    process5.stderr.write(`dynmcp: ${error instanceof Error ? error.message : String(error)}
-`);
-    process5.exit(1);
-  }
-  let tools;
-  try {
-    tools = await upstreamClient.listTools();
-  } catch (error) {
-    process5.stderr.write(`dynmcp: ${error instanceof Error ? error.message : String(error)}
-`);
-    process5.exit(1);
-  }
-  const catalog = ToolCatalog.fromFlat(tools);
-  const proxyServer = new ProxyServer({
-    catalog,
-    callTool: (name, input) => upstreamClient.callTool(name, input)
-  });
-  process5.on("SIGINT", () => shutdown(0));
-  process5.on("SIGTERM", () => shutdown(0));
-  process5.stdin.on("end", () => shutdown(0));
-  process5.stdin.on("close", () => shutdown(0));
-  try {
-    await proxyServer.start();
-  } catch (error) {
-    shutdown(1);
-    throw error;
-  }
+  await runProxy(orchestrator);
 }
 async function startProxyFromConfig(options = {}) {
-  let isShuttingDown = false;
   const config = loadConfig(options);
@@ -734,10 +1611,25 @@ const mcps = /* @__PURE__ */ new Map();
   }
-  const orchestrator = new Orchestrator({
+  const orchestrator = buildOrchestrator({
     mcps,
+    namespaced: true,
+    transportErrorPrefix: (mcpName2) => `Upstream MCP "${mcpName2}"`
+  });
+  await runProxy(orchestrator);
+}
+var activeShutdown = { shutdown: null };
+function buildOrchestrator(params) {
+  return new Orchestrator({
+    mcps: params.mcps,
+    namespaced: params.namespaced,
     onTransportError: (mcpName2, error) => {
-      process5.stderr.write(`Upstream MCP "${mcpName2}" transport error: ${error.message}
-`);
-      shutdown(1);
+      process6.stderr.write(
+        `${params.transportErrorPrefix(mcpName2)} transport error: ${error.message}
+`
+      );
+      activeShutdown.shutdown?.(1);
     }
   });
+}
+async function runProxy(orchestrator) {
+  let isShuttingDown = false;
   const shutdown = (exitCode) => {
@@ -747,23 +1639,52 @@ if (isShuttingDown) return;
     orchestrator.disconnectAll().catch((error) => {
-      process5.stderr.write(
+      process6.stderr.write(
         `dynmcp: error during disconnect: ${error instanceof Error ? error.message : String(error)}
 `
       );
-    }).finally(() => process5.exit(exitCode));
+    }).finally(() => process6.exit(exitCode));
   };
+  activeShutdown.shutdown = shutdown;
   try {
     await orchestrator.connect();
   } catch (error) {
-    process5.stderr.write(`dynmcp: ${error instanceof Error ? error.message : String(error)}
+    process6.stderr.write(`dynmcp: ${error instanceof Error ? error.message : String(error)}
 `);
-    process5.exit(1);
+    process6.exit(1);
+    return;
   }
   const proxyServer = new ProxyServer({
-    catalog: orchestrator.catalog,
-    callTool: (name, input) => orchestrator.callTool(name, input)
+    catalog: () => orchestrator.catalog,
+    capabilities: orchestrator.capabilities,
+    callTool: (name, input, options) => orchestrator.callTool(name, input, options),
+    resources: orchestrator.capabilities.resources !== void 0 ? {
+      listResources: () => orchestrator.listResources(),
+      listResourceTemplates: () => orchestrator.listResourceTemplates(),
+      readResource: (uri, options) => orchestrator.readResource(uri, options),
+      subscribeResource: (uri, options) => orchestrator.subscribeResource(uri, options),
+      unsubscribeResource: (uri, options) => orchestrator.unsubscribeResource(uri, options)
+    } : void 0,
+    prompts: orchestrator.capabilities.prompts !== void 0 ? {
+      listPrompts: () => orchestrator.listPrompts(),
+      getPrompt: (name, args, options) => orchestrator.getPrompt(name, args, options)
+    } : void 0,
+    complete: orchestrator.capabilities.completions !== void 0 ? (params, options) => orchestrator.complete(params, options) : void 0,
+    setLoggingLevel: orchestrator.capabilities.logging !== void 0 ? (level, options) => orchestrator.setLoggingLevel(level, options) : void 0,
+    onRootsListChanged: () => orchestrator.broadcastRootsListChanged()
   });
-  process5.on("SIGINT", () => shutdown(0));
-  process5.on("SIGTERM", () => shutdown(0));
-  process5.stdin.on("end", () => shutdown(0));
-  process5.stdin.on("close", () => shutdown(0));
+  orchestrator.setNotificationHandlers({
+    onToolsListChanged: () => proxyServer.sendToolListChanged(),
+    onResourcesListChanged: () => proxyServer.sendResourceListChanged(),
+    onResourceUpdated: (params) => proxyServer.sendResourceUpdated(params),
+    onPromptsListChanged: () => proxyServer.sendPromptListChanged(),
+    onLogMessage: (params) => proxyServer.sendLoggingMessage(params)
+  });
+  orchestrator.setServerRequestForwarders({
+    onCreateMessage: (params, options) => proxyServer.forwardCreateMessage(params, options),
+    onElicitInput: (params, options) => proxyServer.forwardElicitInput(params, options),
+    onListRoots: (params, options) => proxyServer.forwardListRoots(params, options)
+  });
+  process6.on("SIGINT", () => shutdown(0));
+  process6.on("SIGTERM", () => shutdown(0));
+  process6.stdin.on("end", () => shutdown(0));
+  process6.stdin.on("close", () => shutdown(0));
   try {
@@ -788,16 +1709,13 @@ await proxyServer.start();
   "\nExamples:\n  dynmcp -- npx -y chrome-devtools-mcp@latest\n  dynmcp --config ./mcp.json\n"
-).option("-c, --config <path>", "Path to config file (JSON or YAML)").option(
-  "-e, --env <path>",
-  "Path to a .env file for environment variable interpolation"
-).allowExcessArguments(true).passThroughOptions(true).action(async (_options, cmd) => {
-  const separatorIndex = process6.argv.indexOf("--");
+).option("-c, --config <path>", "Path to config file (JSON or YAML)").option("-e, --env <path>", "Path to a .env file for environment variable interpolation").allowExcessArguments(true).passThroughOptions(true).action(async (_options, cmd) => {
+  const separatorIndex = process7.argv.indexOf("--");
   const configPath = cmd.opts().config;
   const envFilePath = cmd.opts().env;
   if (separatorIndex !== -1) {
-    const [command, ...args] = process6.argv.slice(separatorIndex + 1);
+    const [command, ...args] = process7.argv.slice(separatorIndex + 1);
     if (command === void 0) {
-      process6.stderr.write(
+      process7.stderr.write(
         "dynmcp: no upstream command provided after --.\nUsage: dynmcp -- <command> [args...]\n"
       );
-      process6.exit(1);
+      process7.exit(1);
     }
@@ -807,5 +1725,5 @@ try {
     } catch (error) {
-      process6.stderr.write(`dynmcp: ${error instanceof Error ? error.message : String(error)}
+      process7.stderr.write(`dynmcp: ${error instanceof Error ? error.message : String(error)}
 `);
-      process6.exit(1);
+      process7.exit(1);
     }
@@ -817,5 +1735,5 @@ return;
   } catch (error) {
-    process6.stderr.write(`dynmcp: ${error instanceof Error ? error.message : String(error)}
+    process7.stderr.write(`dynmcp: ${error instanceof Error ? error.message : String(error)}
 `);
-    process6.exit(1);
+    process7.exit(1);
   }
@@ -825,7 +1743,7 @@ });
 // src/index.ts
-import process7 from "process";
+import process8 from "process";
 async function main() {
-  cli.parse(process7.argv);
+  cli.parse(process8.argv);
 }
 main();
 //# sourceMappingURL=index.js.map

package.json

 {
   "name": "dynmcp",
-  "version": "0.2.0",
+  "version": "0.3.0",
   "description": "Dynamic MCP context management tool for AI MCP-enabled agents and clients.",
@@ -83,2 +83,3 @@ "author": "Brandon Burrus <[e-mail]>",
     "@types/node": "^25.9.0",
+    "@vitest/coverage-v8": "^4.1.6",
     "husky": "^9.1.7",
@@ -85,0 +86,0 @@ "tsup": "^8.5.1",

No alert changes

Improved metrics

Total package byte prevSize

387173

115.66%

Lines of code

3539

103.74%

Worsened metrics

Dev dependency count

10

11.11%

No dependency changes