Pinner MCP 📍
A Model Context Protocol (MCP) server that can help pin 3rd party dependencies to immutable digests.Supported dependency types include:
- Docker base images
- GitHub Actions
📦 Usage
Run as a container with stdio transport.
docker run -it --rm ghcr.io/safedep/pinner-mcp:latest
💻 Cursor
Add the following to your .cursor/mcp.json file. You must enablethe MCP server in the settings. Learn more here.
{
"mcpServers": {
"pinner-mcp-stdio-server": {
"command": "docker",
"args": [
"run",
"--rm",
"-i",
"ghcr.io/safedep/pinner-mcp:latest"
]
}
}
}
Use a Composer prompt like the following to pin a specific commit hash.
Pin GitHub Actions to their commit hash
Pin container base images to digests
To update pinned versions, you can use a prompt like the following.
Update pinned versions of container base images
🔄 Tool Updates
Updates for the MCP server are automatically pushed to the latest tag onGitHub Container Registry. Youmust manually update your local container image to the latest version.
docker pull ghcr.io/safedep/pinner-mcp:latest
📚 References
- Originally built to protect vet from malicious GitHub Actions
- mcp-go is a great library for building MCP servers
- Built and maintained by SafeDep Engineering
