I have chunckhound is a few projects and it’s noted in both the agent md file as well as mcp and claude never uses it. Ever. Never once.

Is there a prompt special sauce y’all use to get it to use it?

Just add to your prompt something like "use code research", but yes there's a PR in the works that fixes that and optimizes the MCP tools interface - https://github.com/chunkhound/chunkhound/pull/150