heku turns MCP servers into a config file. No more custom auth, transport, and tool boilerplate for every API you plug into an agent. Point it at an HTTP API, a database, gRPC, or another MCP server. A tiny manifest exposes config dicovery tools first, so the LLM lazily discovers tools only when needed. Context stays lean, credentials stay isolated, tools hot-reload mid-session. Apache 2.0. The boilerplate harness I kept rewriting by hand.