{
  "fact": {
    "id": "fact_rust_mcp_server",
    "fact_kind": "real_implementation",
    "title": "crates/engineering-coworker - real Rust MCP server",
    "description": "This repo's own crates/engineering-coworker is a Rust MCP server (rmcp crate, stdio transport) that exposes cargo/wrangler/git/D1 tools, used FOR Claude cloud to EXECUTE operations on the developer's real Mac - not just suggest code. Distinct from the abstract skill above: this is compiled, running infrastructure in THIS repo, not the sister repo's cowork/ chassis.",
    "source_doc": "CLAUDE.md (engineering-coworker MCP server section)",
    "created_at": "2026-07-02 04:46:31",
    "cite_as": "https://subagentengineering.com/api/engineering-role-facts/fact_rust_mcp_server"
  }
}