Gives your AI coding agent a single `docs` tool that runs async code in a sandbox, letting it fetch documentation from multiple stacks in one round trip instead of making separate tool calls. Ships with Next.js, React, Turborepo, and Supabase docs out of the box, but it's built to be forked. Each stack you add contributes `<stack>_index()` and `<stack>_docs({ path })` to the sandbox SDK, plus there's a BM25 ranked search across all stacks. Reach for this when you want agents to efficiently grab framework docs, internal library references, or any markdown source without the usual MCP request overhead. The real win is packaging exactly the docs your team needs rather than using the starter set.
claude mcp add --transport stdio sustinbebustin-citadel-mcp uvx citadel-mcp