Gin-MCP: Zero-Config Gin to MCP Bridge

What is Gin-MCP?

Gin-MCP is an opinionated, zero-configuration library that automatically exposes existing Gin (Go web framework) endpoints as Model Context Protocol (MCP) tools. It is for developers who want their Gin APIs to be instantly usable by MCP-compatible clients like Cursor, Claude Desktop, Continue, and Zed.

How to use Gin-MCP?

Install with go get github.com/ckanthony/gin-mcp. In your Go code, create a Gin engine, define your routes, then initialize an MCP server with server.New(r, &server.Config{...}) (providing a Name, Description, and explicit BaseURL), mount it at a path like /mcp, and run the Gin server as usual.

Key features of Gin-MCP

• Automatic discovery of all registered Gin routes.
• Generates MCP tool schemas from route parameters and types.
• Selective endpoint exposure using operation IDs or tags.
• Forwards Authorization header to internal tool calls.
• Supports Streamable HTTP Transport for stateless deployments.
• Zero-configuration with optional customization via RegisterSchema.

Use cases of Gin-MCP

• Expose a Gin API to AI coding assistants like Cursor and Claude Desktop.
• Enable MCP tools for existing production Gin services without code changes.
• Provide structured API access to MCP clients for automated workflows.
• Filter which endpoints are exposed to MCP clients for security.