rust-expert-mcp

# rust-expert-mcp A Rust MCP (Model Context Protocol) server that gives any MCP-compatible AI assistant **live access to the entire rust-lang GitHub organization** — source code, compiler errors, RFCs, The Book, The Reference, The Nomicon, Rust By Example, and crates.io. Built with [rmcp 1.5.0](https://crates.io/crates/rmcp) (the official Rust MCP SDK). --- ## Tools | Tool | Description | |---|---| | `search_rust_source` | Code search across all rust-lang repos (rustc, std, Cargo, Clippy, rustdoc…) | | `search_rust_issues` | Issues & PRs across any rust-lang repo | | `get_repo_file` | Read any file from any rust-lang repository | | `list_rust_repos` | List all public repos in the rust-lang org | | `explain_compiler_error` | Full E0xxx error explanations sourced directly from rustc | | `get_rust_book` | Chapters from *The Rust Programming Language* | | `get_rust_reference` | Sections from the Rust Reference (formal language spec) | | `get_rust_nomicon` | Sections from the Rustonomicon (unsafe / advanced Rust) | | `get_rust_by_example` | Chapters from *Rust by Example* | | `get_rust_rfc` | Full RFC text by number | | `search_rust_rfcs` | Search accepted RFCs by keyword | | `get_crate_info` | Crate metadata from crates.io | | `get_rust_edition_guide` | Edition migration guides (2015 / 2018 / 2021 / 2024) | --- ## Build Requires [Rust](https://rustup.rs) (stable, edition 2021). ```bash git clone https://github.com/Degens-World/rust-expert-mcp cd rust-expert-mcp cargo build --release # binary → target/release/rust-expert-mcp (or .exe on Windows) ``` --- ## Configure in Claude Code ```bash claude mcp add rust-expert -- /path/to/rust-expert-mcp ``` Or add it manually to your Claude config (`~/.claude/claude.json`): ```json { "mcpServers": { "rust-expert": { "command": "/path/to/rust-expert-mcp" } } } ``` ### Claude Desktop (`claude_desktop_config.json`) ```json { "mcpServers": { "rust-expert": { "command": "/path/to/rust-expert-mcp" } } } ``` --- ## GitHub Token (recommended) Without a token the GitHub API allows **10 search requests / minute** and **60 requests / hour**. With a token: **30 searches / minute** and **5 000 requests / hour**. Generate a token at **GitHub → Settings → Developer Settings → Personal Access Tokens** (no scopes required for public repos), then pass it via environment variable: ```json { "mcpServers": { "rust-expert": { "command": "/path/to/rust-expert-mcp", "env": { "GITHUB_TOKEN": "ghp_your_token_here" } } } } ``` --- ## Example usage (with Claude) ``` Search for how `Pin` is implemented in the standard library. → search_rust_source(query="Pin", repo="rust") Explain compiler error E0505. → explain_compiler_error(error_code="E0505") Show me RFC 2094 (Non-Lexical Lifetimes). → get_rust_rfc(number=2094) What chapter covers async/await in The Book? → get_rust_book(chapter="SUMMARY") Read the trait-objects section of the Reference. → get_rust_reference(section="trait-objects") How many downloads does tokio have? → get_crate_info(name="tokio") ``` --- ## License MIT