TRUSS MCP Server

The structural layer for AI-native workflows.

AI-native developer tools for Claude Code. Generate CLAUDE.md files, rules, agent definitions, prompt templates, n8n workflows, security audits, and more — all from within your Claude Code session.

Quick Start

Run with npx (no install needed):

npx -y truss-mcp

Claude Desktop / Claude Code

Add to your claude_desktop_config.json or .claude/settings.json:

{
  "mcpServers": {
    "truss-devtools": {
      "command": "npx",
      "args": ["-y", "truss-mcp"]
    }
  }
}

Cursor

Add to your Cursor MCP settings:

{
  "mcpServers": {
    "truss-devtools": {
      "command": "npx",
      "args": ["-y", "truss-mcp"]
    }
  }
}

What's Included

Free Tier (no license needed)

Pro Tier ($9/mo)

Get TRUSS Pro

Installation

npm install -g truss-mcp

Configuration

Add to your Claude Code MCP configuration (~/.claude/claude_desktop_config.json or project-level):

{
  "mcpServers": {
    "truss": {
      "command": "truss-mcp",
      "env": {
        "TRUSS_LICENSE_KEY": "truss_your_license_key_here"
      }
    }
  }
}

For the free tier, omit the env block:

{
  "mcpServers": {
    "truss": {
      "command": "truss-mcp"
    }
  }
}

Usage Examples

Initialize a Project (Free)

"Use truss_init_project to set up my Node.js API project"

Generates CLAUDE.md, code style rules, testing rules, and a QA reviewer agent definition. Supports: Node.js, Python, Go, Rust, React, fullstack, monorepo, and library project types.

Generate CLAUDE.md (Free)

"Use truss_generate_claude_md to create a CLAUDE.md for my project"

Analyzes your file structure and generates a tailored CLAUDE.md with tech stack detection, build commands, and code style guidelines.

Search Prompts (Free)

"Use truss_search_prompts to find prompts about security review"

Searches the built-in library of 20+ prompt templates across code review, testing, documentation, security, architecture, and debugging categories.

Generate Rules (Pro)

"Use truss_generate_rules for TypeScript with the React framework"

Creates comprehensive .claude/rules/ files with language-specific code style, testing, and security rules. Supports framework-specific additions (React, Express, FastAPI, Gin, Actix, Next.js, Django).

Generate Agents (Pro)

"Use truss_generate_agents to create a Security Auditor agent"

Generates .claude/agents/ definitions with pre-built templates for common roles (QA Reviewer, Security Auditor, Documentation Writer, Performance Analyst, API Designer).

Generate Workflow (Pro)

"Use truss_generate_workflow: When a GitHub issue is created, send a Slack notification"

Generates importable n8n workflow JSON with nodes, connections, and configuration. Auto-detects required nodes from your description.

Optimize Config (Pro)

"Use truss_optimize_config with my CLAUDE.md content"

Audits your configuration for completeness, structure, and effectiveness. Provides a grade (A-F), identifies missing sections, and suggests improvements.

Security Audit (Pro)

"Use truss_security_audit on these files"

Pattern-based security scanner that detects hardcoded secrets, SQL injection, XSS, command injection, path traversal, weak cryptography, SSRF, and more.

Test Generator (Pro)

"Use truss_test_generator for this Python function"

Generates test files with happy path, edge case, and error handling tests. Supports Vitest/Jest (JS/TS), pytest (Python), Go testing, and Rust built-in tests.

Prompt Library Categories

The built-in prompt library includes templates for:

• Code Review: Security review, performance review, readability review, PR review
• Testing: Unit tests, integration tests, E2E scenarios
• Documentation: API docs, README generation, ADRs, changelog entries
• Security: Threat modeling, audit checklists, incident response playbooks
• Architecture: System design, migration plans, API design review
• Debugging: Root cause analysis, performance investigation, log analysis

Template Coverage

CLAUDE.md templates for 8 project types:

• node-api — Node.js REST API (Express/Fastify)
• python-ml — Python ML/data science project
• python-api — Python API (FastAPI)
• go-service — Go microservice
• rust-cli — Rust CLI application
• react-app — React SPA (TypeScript + Vite)
• fullstack — Full-stack application (frontend + backend + DB)
• monorepo — Monorepo (Turborepo/Nx)
• library — Publishable library/package

Rule templates for 4 languages: JavaScript/TypeScript, Python, Go, Rust

Running Evals

cd truss-mcp-server
npm run eval

The eval suite tests all free and Pro tools for correctness, output structure, and edge cases.

License

MIT -- see LICENSE.

Built by TRUSS -- the structural layer for AI-native workflows.

A2A Discovery

This server publishes a Google A2A Protocol Agent Card, making it discoverable by any A2A-compatible agent framework (LangGraph, CrewAI, Google ADK, AutoGen, and others).

Agent Card: agent-card.json

The agent card describes this server's skills, capabilities, input/output modalities, and authentication requirements in a machine-readable format. A2A clients can use it to discover and invoke tools automatically without manual configuration.

# Fetch the agent card
curl https://raw.githubusercontent.com/claw-factory/truss-mcp/main/agent-card.json