Linear MCP Server

An MCP server for interacting with Linear's API. This server provides a set of tools for managing Linear issues, projects, and teams through Cline.

Setup Guide

1. Environment Setup

1. Clone the repository

2. Install dependencies:

npm install

3. Copy `.env.example` to `.env`:

cp .env.example .env

2. Authentication

The server supports two authentication methods:

API Key (Recommended)

1. Go to Linear Settings

2. Navigate to the "Security & access" section

3. Find the "Personal API keys" section

4. Click "New API key"

5. Give the key a descriptive label (e.g. "Cline MCP")

6. Copy the generated token immediately

7. Add the token to your `.env` file:

LINEAR_API_KEY=your_api_key

OAuth Flow (Alternative) *NOT IMPLEMENTED*

1. Create an OAuth application at https://linear.app/settings/api/applications

2. Configure OAuth environment variables in `.env`:

LINEAR_CLIENT_ID=your_oauth_client_id
   LINEAR_CLIENT_SECRET=your_oauth_client_secret
   LINEAR_REDIRECT_URI=http://localhost:3000/callback

3. Running the Server

1. Build the server:

npm run build

2. Start the server:

npm start

4. Cline Integration

1. Open your Cline MCP settings file:

2. Add the Linear MCP server configuration:

{
     "mcpServers": {
       "linear": {
         "command": "node",
         "args": ["/path/to/linear-mcp/build/index.js"],
         "env": {
           "LINEAR_API_KEY": "your_personal_access_token"
         },
         "disabled": false,
         "autoApprove": []
       }
     }
   }

Available Actions

The server currently supports the following operations:

Issue Management

• ✅ Create issues with full field support (title, description, team, project, etc.)
• ✅ Update existing issues (priority, description, etc.)
• ✅ Delete issues (single or bulk deletion)
• ✅ Search issues with filtering
• ✅ Associate issues with projects
• ✅ Create parent/child issue relationships

Project Management

• ✅ Create projects with associated issues
• ✅ Get project information
• ✅ Associate issues with projects

Team Management

• ✅ Get team information (with states and workflow details)
• ✅ Access team states and labels

Authentication

• ✅ API Key authentication
• ✅ Secure token storage

Batch Operations

• ✅ Bulk issue creation
• ✅ Bulk issue deletion

Bulk Updates (In Testing)

• 🚧 Bulk issue updates (parallel processing implemented, needs testing)

Features in Development

The following features are currently being worked on:

Issue Management

• 🚧 Comment functionality (add/edit comments, threading)
• 🚧 Complex search filters
• 🚧 Pagination support for large result sets

Metadata Operations

• 🚧 Label management (create/update/assign)
• 🚧 Cycle/milestone management

Project Management

• 🚧 Project template support
• 🚧 Advanced project operations

Authentication

• 🚧 OAuth flow with automatic token refresh

Performance & Security

• 🚧 Rate limiting
• 🚧 Detailed logging
• 🚧 Load testing and optimization

Development

# Install dependencies
npm install

# Run tests
npm test

# Run integration tests (requires LINEAR_API_KEY)
npm run test:integration

# Build the server
npm run build

# Start the server
npm start

Integration Testing

Integration tests verify that authentication and API calls work correctly:

1. Set up authentication (API Key recommended for testing)

2. Run integration tests:

npm run test:integration

For OAuth testing:

1. Configure OAuth credentials in `.env`

2. Remove `.skip` from OAuth tests in `src/__tests__/auth.integration.test.ts`

3. Run integration tests