GitLab MCP Server

A Model Context Protocol (MCP) server for GitLab that enables AI assistants to interact with GitLab APIs in a structured and secure way.

Features

• Multiple Transport Support: Stdio, SSE (Server-Sent Events), and Streamable
• Secure Operations: Restricted operations to prevent accidental modifications to protected branches
• GitLab Integration: Full support for common GitLab operations
• Docker Support: Easy deployment with Docker

Supported Operations

Read Operations (Always Allowed)

• List projects
• Get project details
• List merge requests
• Get merge request details
• Get file content
• List commits
• List pipelines
• List issues

Write Operations (With Restrictions)

• Create merge request note (comment on MR)
• Create merge request (source/target cannot be master/test)

Restricted Operations

• Merge code (blocked)
• Push to master/test branches (blocked)
• Modify configurations (blocked)
• Delete operations (blocked)

Installation

From Source

git clone https://github.com/yourusername/gitlab-mcp-server.git
cd gitlab-mcp-server
go build -o gitlab-mcp-server ./cmd/server

Using Docker

# Build the image
docker build -t gitlab-mcp-server .

# Run with environment variables
docker run -e GITLAB_TOKEN="your-token" \
           -e GITLAB_HOST="https://gitlab.com" \
           gitlab-mcp-server

Pull from Docker Hub

docker pull codyrao/gitlab-mcp-server:latest

docker run -e GITLAB_TOKEN="your-token" \
           -e GITLAB_HOST="https://gitlab.com" \
           codyrao/gitlab-mcp-server:latest

Configuration

Configuration File (config.yaml)

server:
  host: "0.0.0.0"
  port: 8080
  transport: "stdio"

gitlab:
  host: "https://gitlab.com"
  token: "your-gitlab-token-here"

logging:
  level: "info"

Environment Variables

Variable	Description	Default
GITLAB_TOKEN	GitLab personal access token	Required
GITLAB_HOST	GitLab instance URL	https://gitlab.com
GITLAB_MCP_TRANSPORT	Transport type (stdio, sse)	stdio
GITLAB_MCP_PORT	Port for SSE transport	8080

Usage

STDIO Transport (Default)

For Claude Desktop or other MCP clients:

{
  "mcpServers": {
    "gitlab": {
      "command": "docker run --rm -i -e GITLAB_TOKEN codyrao/gitlab-mcp-server:latest",
      "args": ["-transport", "stdio"]
    }
  }
}

Or with local binary:

{
  "mcpServers": {
    "gitlab": {
      "command": "./gitlab-mcp-server",
      "args": ["-config", "config.yaml", "-transport", "stdio"]
    }
  }
}

SSE Transport

# Using config file
./gitlab-mcp-server -config config.yaml -transport sse -port 8080

# Using environment variables
docker run -p 8080:8080 \
           -e GITLAB_TOKEN="your-token" \
           -e GITLAB_MCP_TRANSPORT="sse" \
           -e GITLAB_MCP_PORT="8080" \
           codyrao/gitlab-mcp-server:latest

Then configure your MCP client to connect to:

• SSE: http://localhost:8080/connect

Available Tools

gitlab_list_projects

List GitLab projects for the authenticated user.

Parameters:

• membership (boolean): Limit to projects where the authenticated user is a member
• owned (boolean): Limit to projects owned by the authenticated user
• search (string): Search projects by name
• per_page (integer): Number of results per page

gitlab_get_project

Get details of a GitLab project.

Parameters:

• project_id (string): The project ID or path (e.g., 'group/project')

gitlab_list_mrs

List merge requests in a GitLab project.

Parameters:

• project_id (string): The project ID or path
• state (string): Filter by state (opened, closed, merged, all)
• per_page (integer): Number of results per page

gitlab_get_mr_details

Get detailed information about a merge request.

Parameters:

• project_id (string): The project ID or path
• mr_iid (integer): The merge request IID

gitlab_create_MR_note

Create a comment on a merge request.

Parameters:

• project_id (string): The project ID or path
• mr_iid (integer): The merge request IID
• body (string): The comment text

gitlab_get_file_content

Get the content of a file from a GitLab repository.

Parameters:

• project_id (string): The project ID or path
• file_path (string): Path to the file in the repository
• ref (string): The branch, tag, or commit reference

gitlab_list_commits

List commits in a GitLab project.

Parameters:

• project_id (string): The project ID or path
• ref_name (string): The branch or tag name
• per_page (integer): Number of results per page

gitlab_list_pipelines

List pipelines in a GitLab project.

Parameters:

• project_id (string): The project ID or path
• per_page (integer): Number of results per page

gitlab_create_mr

Create a new merge request. Cannot create MR to or from master/test branches.

Parameters:

• project_id (string): The project ID or path
• source_branch (string): The source branch name
• target_branch (string): The target branch name (cannot be master or test)
• title (string): The merge request title
• description (string): The merge request description

gitlab_list_issues

List issues in a GitLab project.

Parameters:

• project_id (string): The project ID or path
• state (string): Filter by state (opened, closed, all)
• per_page (integer): Number of results per page

Security Restrictions

This MCP server implements strict security restrictions to prevent accidental modifications:

1. Protected Branches: Operations on master, main, test, develop, and release branches are blocked
2. Merge Operations: Merge requests cannot be merged through this server
3. Delete Operations: All delete operations are blocked
4. Configuration Changes: Project settings cannot be modified
5. Branch Creation: Creating branches with protected names is blocked

GitLab Token Permissions

Your GitLab personal access token needs the following permissions:

• api: Full API access
• read_api: Read API access
• read_repository: Read repository access
• write_repository: Write repository access (for create MR operations)

Development

Running Locally

# Install dependencies
go mod download

# Run the server
go run ./cmd/server -config config.yaml -transport stdio

Building for Docker

# Build the image
docker build -t gitlab-mcp-server .

# Push to Docker Hub
docker login -u codyrao
docker tag gitlab-mcp-server codyrao/gitlab-mcp-server:latest
docker push codyrao/gitlab-mcp-server:latest

License

MIT License

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.