tentra-mcp

tentra-mcp

AI-native architecture platform for engineering teams. Describe systems → get diagrams → export to 14 frameworks. Plus a persistent code graph for AI coding agents.

Works in Cursor, Claude Code, Codex, and Windsurf.

Quick Start

npx tentra-mcp

On first use, your browser opens for one-click GitHub sign-in. That's it — no API key needed.

Advanced: If you prefer to use an API key directly, run npx tentra-mcp --key YOUR_API_KEY. Get your key at trytentra.com/settings.

What is Tentra?

Tentra is an AI-native architecture platform for engineering teams. Describe a system in natural language — get an interactive diagram and production-ready code in 14 frameworks. Keep diagrams in sync with code automatically. Three pillars:

• AI-native architecture generation. Describe a system in plain English → interactive diagram with services, connections, and zones. 167 drag-drop cloud components (AWS, GCP, Azure, Kubernetes). Versioned, shareable artifacts. Works inside Cursor, Claude Code, Codex, Windsurf via MCP.
• Export to real production code (14 frameworks). Java Spring Boot, Node.js, Python FastAPI, Go chi, Rust Axum, .NET ASP.NET, Kotlin Ktor, PHP Laravel, Ruby Rails, Elixir Phoenix, Docker Compose, Terraform, Mermaid, ADR docs. Real project scaffolds with service definitions, connections, and health checks — not boilerplate.
• Drift detection: diagram vs code. Saved architecture vs current codebase → accuracy score + diff. Runs any time, in CI, or during review. Architecture that stays in sync with reality, automatically.

Also included — a persistent code graph for AI coding agents. index_code walks your repo with Tree-sitter, storing files, symbols, imports, call edges, and semantic annotations as a queryable graph. Agents get structural answers across sessions — call graphs, fan-in, shortest path between two symbols, god-nodes, churn × complexity hotspots. Free in local mode (npx tentra-mcp --local init), complementing the architecture workspace.

This MCP server gives your AI assistant 35 tools:

Architecture (9 tools)

Tool	Description
create_architecture	Design a new system from a description
update_architecture	Modify an existing architecture
get_architecture	Read architecture details
list_architectures	Browse all saved designs
analyze_codebase	Scan local code and generate diagram
lint_architecture	Quality checks (9 rules: orphans, SPOFs, god services)
sync_architecture	Detect drift between diagram and code
export_architecture	Export to 14 frameworks (Java, Python, Go, Rust, etc.)
create_flow	Create step-by-step flow visualization

Code Graph — Write (4 tools)

Tool	Description
index_code	Walk a repo, Tree-sitter locally, start a semantic indexing job
index_code_continue	Resume an in-progress indexing job
record_semantic_node	Persist an agent-extracted semantic annotation
get_index_job	Check status of an indexing job

Code Graph — Read (12 tools)

Tool	Description
query_symbols	Fuzzy trigram search across indexed symbols
find_references	Every resolved caller of a symbol (refactor-safety)
safe_rename	Patch plan for renaming a symbol — definition + every call site, no files written
get_symbol_neighbors	BFS traversal in the call/import graph
get_service_code_graph	Subgraph for a canvas service
explain_code_path	Shortest path between two symbols with semantic context
find_similar_code	pgvector cosine ANN over agent-generated embeddings
record_embedding	Persist an agent-generated embedding vector
list_god_nodes	Highest fan-in/out symbols (architectural smells)
get_quality_hotspots	Churn × complexity ranking
list_snapshots	Time-travel listing of indexed snapshots
diff_snapshots	Files / symbols / god-nodes added/removed between snapshots

Enrichment — Contracts, Decisions, Ownership, Domains (9 tools)

Tool	Description
set_service_mapping	Link an indexed file or symbol to a canvas service
set_domain_membership	Assign a service or file to a domain (bounded context)
record_contract	Store a parsed API contract payload (OpenAPI, GraphQL, Protobuf)
bind_contract	Link a contract to the symbol that implements it
record_decision	Create an Architecture Decision Record, optionally linking code
link_decision	Append a link from an ADR to another symbol, file, or service
get_ownership	Resolve the owner (team or person) for a file or service
get_decisions_for	List ADRs linked to a given entity
get_contracts	List contracts, optionally filtered by kind or service

Setup

Option 1: SSE (zero install)

Add to your IDE's MCP config — no local install needed:

Cursor (Settings > Features > MCP > Add Server):

{
  "tentra": {
    "type": "sse",
    "url": "https://trytentra.com/api/mcp?key=YOUR_API_KEY"
  }
}

Claude Code (.mcp.json in project root):

{
  "mcpServers": {
    "tentra": {
      "type": "sse",
      "url": "https://trytentra.com/api/mcp?key=YOUR_API_KEY"
    }
  }
}

Option 2: Local install (needed for codebase scanning)

npx tentra-mcp

Authenticates automatically via GitHub on first use. Credentials are saved to ~/.tentra/credentials.

Cursor config for local server:

{
  "tentra": {
    "command": "npx",
    "args": ["tentra-mcp"]
  }
}

Claude Code (.mcp.json):

{
  "mcpServers": {
    "tentra": {
      "command": "npx",
      "args": ["tentra-mcp"]
    }
  }
}

Usage Examples

Once connected, just talk to your AI:

"Design a payment system with Stripe, Kafka, and PostgreSQL"
→ AI calls create_architecture → diagram at trytentra.com/arch/xxx

"Scan this codebase and generate the architecture"
→ AI calls analyze_codebase → detects services, DBs, queues

"Export this architecture to Java Spring Boot"
→ AI calls export_architecture → downloads zip with project scaffold

"What changed since last time? Is my diagram outdated?"
→ AI calls sync_architecture → drift report with accuracy score

Export Formats

Java (Spring Boot), Node.js (Fastify), Python (FastAPI), Go (chi), Rust (Axum), .NET (ASP.NET), Kotlin (Ktor), PHP (Laravel), Ruby (Rails), Elixir (Phoenix), Docker Compose, Mermaid, ADR, Terraform

Links

• Website: trytentra.com
• Documentation: trytentra.com/docs
• Setup Guide: trytentra.com/docs/setup
• Gallery: trytentra.com/gallery

License

MIT