@agentmark-ai/mcp-server

@agentmark-ai/mcp-server

MCP (Model Context Protocol) server for AgentMark trace debugging. This server enables AI assistants to query and analyze traces from your AgentMark applications.

Installation

npm install @agentmark-ai/mcp-server
# or
yarn add @agentmark-ai/mcp-server

Usage

As a CLI tool

Run the MCP server directly:

npx @agentmark-ai/mcp-server

With Claude Code

Add to your project's .mcp.json:

{
  "mcpServers": {
    "agentmark-traces": {
      "command": "npx",
      "args": ["@agentmark-ai/mcp-server"],
      "env": {
        "AGENTMARK_URL": "http://localhost:9418"
      }
    }
  }
}

With Cursor

Add to your project's .cursor/mcp.json:

{
  "mcpServers": {
    "agentmark-traces": {
      "command": "npx",
      "args": ["@agentmark-ai/mcp-server"],
      "env": {
        "AGENTMARK_URL": "http://localhost:9418"
      }
    }
  }
}

With Claude Desktop

Add to your Claude Desktop configuration (claude_desktop_config.json):

{
  "mcpServers": {
    "agentmark-traces": {
      "command": "npx",
      "args": ["@agentmark-ai/mcp-server"],
      "env": {
        "AGENTMARK_URL": "http://localhost:9418"
      }
    }
  }
}

Cloud Configuration

For AM Cloud integration, add your API key:

{
  "mcpServers": {
    "agentmark-traces": {
      "command": "npx",
      "args": ["@agentmark-ai/mcp-server"],
      "env": {
        "AGENTMARK_URL": "https://api.agentmark.ai",
        "AGENTMARK_API_KEY": "your-api-key"
      }
    }
  }
}

Requirements

For local development, this MCP server connects to the AgentMark CLI local API server:

• The AgentMark CLI installed and running (agentmark dev)
• Traces recorded in your local AgentMark database

Configuration

Environment Variable	Default	Description
AGENTMARK_URL	http://localhost:9418	URL of the AgentMark API server
AGENTMARK_API_KEY	-	API key for authentication (required for cloud)
AGENTMARK_TIMEOUT_MS	30000	Request timeout in milliseconds

Available Tools

list_traces

List recent traces with metadata including IDs, names, status, latency, cost, and token counts. Supports cursor-based pagination.

Parameters:

• limit (optional): Maximum traces to return (default: 50, max: 200)
• sessionId (optional): Filter by session ID
• datasetRunId (optional): Filter by dataset run ID
• cursor (optional): Pagination cursor from previous response

Returns:

{
  "items": [...],
  "cursor": "eyJvZmZzZXQiOjUwfQ==",
  "hasMore": true
}

get_trace

Get trace summary with filtered/paginated spans. Includes trace metadata (status, latency, cost, tokens) and spans matching your filters.

Parameters:

• traceId (required): The trace ID to retrieve
• filters (optional): Array of filter objects with field, operator, and value
• limit (optional): Results per page (default: 50, max: 200)
• cursor (optional): Pagination cursor from previous response

Supported Filters:

Field	Operators	Description
status	eq	Span status ("0"=ok, "1"=warning, "2"=error)
duration	gt, gte, lt, lte	Span duration in milliseconds
name	contains	Span name substring match
data.type	eq	Span type ("GENERATION", "SPAN", "EVENT")
data.model	contains	Model name substring match

Note: Duration filters use >= for gt/gte and <= for lt/lte at the database level.

Example - Get trace with error spans:

{
  "traceId": "trace-123",
  "filters": [
    { "field": "status", "operator": "eq", "value": "2" }
  ]
}

Example - Find slow LLM generations in a trace:

{
  "traceId": "trace-123",
  "filters": [
    { "field": "data.type", "operator": "eq", "value": "GENERATION" },
    { "field": "duration", "operator": "gt", "value": 5000 }
  ]
}

Returns:

{
  "trace": {
    "id": "trace-123",
    "name": "my-trace",
    "spans": [],
    "data": {
      "status": "0",
      "latency": 1234,
      "cost": 0.05,
      "tokens": 500
    }
  },
  "spans": {
    "items": [...],
    "cursor": "eyJvZmZzZXQiOjUwfQ==",
    "hasMore": true
  }
}

## Error Handling

All tools return structured errors with codes:

```json
{
  "error": "Trace not found: trace-123",
  "code": "NOT_FOUND",
  "details": { "traceId": "trace-123" }
}

Error Codes:

• CONNECTION_FAILED - Cannot reach data source
• INVALID_QUERY - Malformed filter or unsupported field/operator combination
• NOT_FOUND - Resource doesn't exist
• TIMEOUT - Request exceeded time limit

Programmatic Usage

import { createMCPServer, runServer } from '@agentmark-ai/mcp-server';

// Run the server with stdio transport
await runServer();

// Or create a server instance for custom transport
const server = await createMCPServer();

License

MIT