An MCP server on Simple Backend

Claude Coach

Six tools that help a person get better answers out of Claude — prompt review, prompt rewriting, practice lookup, model-tier advice, and a memory of what has already worked.

The idea

Most disappointing answers from a model are good answers to a vaguer question than the one you meant. That is a fixable problem, and the fix is a checklist: say the task, say who it is for, say what the output should look like, show an example, leave a way to say “I don't know”.

Claude Coach puts that checklist where it is actually useful — inside the conversation, as tools Claude can call. You paste a prompt and ask what is missing; Claude runs review_prompt and tells you, specifically, with the fix beside each finding.

The coaching is rule-based and offline. No model call, no outbound request, no second key to look after. Claude supplies the judgement; this server supplies the checklist and the memory.

What it runs on

The whole server is one function on Simple Backend: MCP over Streamable HTTP is JSON-RPC on a single URL, which is a request in and a map out. There is no container, no framework and no session store — every POST is answered from its own body, which is what lets it run behind more than one instance without anything to synchronise.

Its memory — the lessons you ask it to keep — is the workspace's own database, so what worked for you survives the conversation it worked in.

Getting it

It takes one command and a key. How to connect →