CLAUDE.md@mcpA

CLAUDE.md@mcp from juliusbrussee/caveman is a CLAUDE.md file: the standing instructions Claude Code reads in that repo.

Install it, pinned

mdr add juliusbrussee/caveman/mcp/CLAUDE.md@git:20260924.921eab8

Pins git:20260924.921eab8 in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 14 of 14 checks passed
Kind: CLAUDE.md file
Repository: juliusbrussee/caveman
Path: mcp/CLAUDE.md
Versions recorded: 4
Latest version: git:20260924.921eab8, committed Sep 24, 2026
First version recorded: Aug 11, 2026
Size: 6,418 bytes
Repository stars: 113,780
License: Apache-2.0

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# mcp — the Caveman MCP server (Go core + launcher, Apache-2.0)

A thin **stdio JSON-RPC** adapter exposing the compression [engine](../engine/CLAUDE.md) as
five MCP tools to any host (Claude Code, Cursor, …). It owns only the MCP framing; all
compression is the engine's, linked **in-process** (no subprocess, no drift). Local-only — it
opens no network connection — and everything it reports is `inferred`, never `verified`.

## Layout
- `server.go` — the `Server`: JSON-RPC loop, dispatch, the five tool handlers. Takes an injectable `Engine` interface so the framing is testable without the real compressors.
- `protocol.go` — JSON-RPC + MCP tool-result types, `toolText`/`toolError` helpers, the exact `tools/list` definitions.
- `cmd/caveman-mcp/` — binary: opens shared file CCR store (`CAVEMAN_CCR_DB`,
  else `CAVEMAN_HOME/ccr.db`/`~/.caveman/ccr.db`) so proxy handles resolve across
  processes, then serves stdin↔stdout. `CAVEMAN_MCP_EPHEMERAL=1` opts into an
  isolated in-memory store for tests/sessions that do not need proxy recovery.
- `bin/caveman-mcp.mjs` + `package.json` — the `npx caveman-mcp` launcher that execs the prebuilt Go binary.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add juliusbrussee/caveman/mcp/CLAUDE.md@sha256:96f173cab0ac75d1

The line at the top of this page pins the label git:20260924.921eab8, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

[![mdr](https://markdownregistry.com/badge/art_7c6ukhnx6lrelgvn.svg)](https://markdownregistry.com/a/art_7c6ukhnx6lrelgvn)

6 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 4 versions of this file, between Aug 11, 2026 and Sep 24, 2026, about one every 15 days.

version	committed	commit	size	audit
git:20260924.921eab8 latest	2026-09-24	921eab8	6,418 B	A	view · diff
git:20260908.21ba0cc	2026-09-08	21ba0cc	6,421 B	A	view · diff
git:20260812.d4ef06b	2026-08-12	d4ef06b	7,015 B	A	view · diff
git:20260811.82864c8	2026-08-11	82864c8	7,091 B	A	view

Audit of the latest version

A 14 of 14 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.

pass: Size between 200 bytes and 200 KB (6418 bytes)
pass: No zero-width or bidi control characters
pass: No instruction hidden inside an HTML comment
pass: No link to an exfiltration or paste host
pass: No credential-shaped string
pass: No instruction to send local credentials anywhere
pass: No text hidden with inline styles
pass: No prompt-injection phrasing
pass: No curl or wget piped into a shell
pass: No recursive delete of root, home or parent
pass: No instruction to read or print local credentials
pass: No base64 blob over 200 characters
pass: No link to a raw IP address
pass: No script tag

Source

GitHub

juliusbrussee/caveman · 113,780 stars · license Apache-2.0 · pushed 2026-10-19 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_7c6ukhnx6lrelgvn
GET https://markdownregistry.com/api/v1/resolve?ref=juliusbrussee/caveman/mcp/CLAUDE.md
GET https://markdownregistry.com/api/v1/blob/96f173cab0ac75d1cb154655970c5e8f24bdd92689bbe955858236633b7c6c3c

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: what a CLAUDE.md file is · keeping AGENTS.md and CLAUDE.md in sync · which agent file does what.