Permit MCP Server

Read-only MCP Server for querying Permit.io configuration.

Quick Start with npx

Run directly without installation:

PERMIT_API_KEY=your_key npx permit-mcp-server

Requirements

• Node.js 22+
• pnpm (for development)
• Docker (optional)

Installation

Global Installation

npm install -g permit-mcp-server

Local Installation

cd permit-mcp
pnpm install
pnpm build

Configuration

Create a .env file based on .env.example:

PERMIT_API_KEY=permit_key_xxxxx
PERMIT_PROJECT_ID=default
PERMIT_ENV_ID=dev

Environment Variables

| Variable | Required | Description | |----------|----------|-------------| | PERMIT_API_KEY | Yes | Permit.io API Key | | PERMIT_PROJECT_ID | No | Project ID (default: "default") | | PERMIT_ENV_ID | No | Default environment |

Docker

Start with Docker Compose

cd permit-mcp && docker compose -f docker-compose.local.yml up -d --build

Stop

docker compose -f docker-compose.local.yml down

View logs

docker logs -f permit-mcp

Available Tools

Environments

• list-environments: List all environments in the project
• get-environment: Get details of a specific environment

Roles

• list-roles: List all roles in an environment
• get-role: Get a role with its permissions

Resources

• list-resources: List all defined resources
• get-resource: Get a resource with its actions and attributes

Users

• list-users: List users with optional filters (pagination, search)
• get-user: Get user information
• get-user-permissions: Get effective permissions for a user

Usage with Claude Code

Add to workspace .mcp.json:

Using npx (Recommended)

{
  "mcpServers": {
    "permit": {
      "command": "npx",
      "args": ["-y", "permit-mcp-server"],
      "env": {
        "PERMIT_API_KEY": "${PERMIT_API_KEY}",
        "PERMIT_PROJECT_ID": "default"
      }
    }
  }
}

Using local installation

{
  "mcpServers": {
    "permit": {
      "command": "node",
      "args": ["permit-mcp/dist/index.js"],
      "env": {
        "PERMIT_API_KEY": "${PERMIT_API_KEY}",
        "PERMIT_PROJECT_ID": "default"
      }
    }
  }
}

Development

# Build
pnpm build

# Watch mode
pnpm dev

# Type check
pnpm typecheck

# Run
pnpm start

Architecture

permit-mcp/
├── src/
│   ├── index.ts              # MCP server entry point
│   ├── permit-client.ts      # HTTP client for Permit.io API
│   └── types/
│       └── permit.ts         # Permit.io API types
├── Dockerfile                # Docker image
├── docker-compose.local.yml  # Docker Compose for development
├── package.json
├── tsconfig.json
└── README.md