rustdoc-mcp

A Model Context Protocol server for rust documentation

Note: This crate requires nightly to be installed, since it uses unstable rustdoc json output format.

Additionally, if you want to allow your MCP users to reference std, core, alloc, proc_macro, and test, you'll need to rustup component add rust-docs-json. This is optional.

Tools

  set-working-directory  Set the working context path for a session
  get-item               Get detailed information about a specific item or list items in a module/crate
  list-crates            List available crates in the workspace, including dependencies

Installation

$ cargo install rustdoc-mcp

Usage with Claude Desktop or gemini-cli

Add this to your MCP configuration JSON file:

{
  "mcpServers": {
    "rustdocs": {
      "command": "/path/to/rustdoc-mcp/rustdoc-mcp",
      "args": ["serve"]
    }
  }
}

License