Agent Skills: Rust Development Skill

Rust Development Skill

Guard: MCP Server Required

This skill REFUSES to operate without the rust-doc MCP server running.

Before any Rust code generation, the agent MUST:

1. Check that vendor/rust-docs-mcp-server/target/release/rustdocs_mcp_server exists
2. If not built, run: cd vendor/rust-docs-mcp-server && cargo build --release
3. Start the server in background: vendor/rust-docs-mcp-server/target/release/rustdocs_mcp_server "serde@^1.0" &

Agentic Guards

When generating Rust code, the agent MUST:

• Query the rust-doc MCP server for crate APIs before writing code
• Never invent function signatures — verify via query_rust_docs
• Use the latest documentation, not training data
• Prefer safe Rust patterns (avoid unsafe without explicit justification)

Preferences

• Dependency management: cargo add over manual Cargo.toml edits
• Testing: #[cfg(test)] with cargo test
• Formatting: cargo fmt before commit
• Clippy: cargo clippy -- -D warnings for CI
• Edition: 2024 preferred
• Error handling: anyhow for applications, thiserror for libraries

Quick Reference

# Build and start the MCP server
cd vendor/rust-docs-mcp-server && cargo build --release
./target/release/rustdocs_mcp_server "serde@^1.0" &

# Query docs via MCP tool
# (available after server starts, via query_rust_docs tool)