prumo MCP server

prumo is a small checker for the instruction files your coding agent reads, like CLAUDE.md, AGENTS.md and SKILL.md. It compares what those notes say against the actual files in your git repository and points out anything that no longer matches. It is handy if you keep notes for an AI coding assistant and want to know when they go stale.

What this MCP server does

You ask your AI to check your project's instruction files. The AI calls this helper, which runs prumo inside your git repository. prumo finds the context files on its own, reads what they say and compares it with the files git actually tracks. It comes back with a list of findings, each with a file, a line number and a suggested correction, and the AI can explain them or fix the simple ones for you.

Click to zoom

What you can do with it

• Check your CLAUDE.md, AGENTS.md and other context files for broken links
• Spot paths that no longer exist because a file or folder was renamed
• Find letter-case mistakes that work on Windows but fail on Linux
• See which sections of your notes describe code that has changed a lot since they were written
• Estimate how many tokens each context file costs your agent at every session
• Fix simple letter-case issues and renames that git recorded
• Run the check on just one file, like a SKILL.md

Try asking your AI

• “Run prumo on this repository and tell me what needs fixing”
• “Check my CLAUDE.md for broken links and missing paths”
• “Which sections of my AGENTS.md are most out of date?”
• “How many tokens do my context files cost at every session?”

What it gives back to you

You get a list of findings in the chat, each with the file name, the line number, what the note says and what the repository actually has. For missing paths, it also shows where git moved the file if the history recorded a rename. The two reports come back as lists too, one ordered by how much the code has changed and one with token estimates and repeated paragraphs. Nothing is changed unless you ask for the fix.

Before you start

Who it's for

People who keep instruction files for AI coding assistants and want to know when those notes drift away from the code.