caveman-compress SKILL.md skillA
This file is byte-identical to the first copy the registry indexed. Same content hash, so the same checks give both the same grade.
caveman-compress from juliusbrussee/caveman is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add juliusbrussee/caveman/caveman-compress@git:20261013.2a6b9a9Pins git:20261013.2a6b9a9 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- juliusbrussee/caveman
- Path
plugins/caveman/skills/caveman-compress/SKILL.md- Versions recorded
- 6
- Latest version
- git:20261013.2a6b9a9, committed Oct 13, 2026
- First version recorded
- May 10, 2026
- Size
- 5,578 bytes
- Repository stars
- 116,476
- License
- Apache-2.0
Compress a memory file such as CLAUDE.md or a todo list into caveman format to save input tokens, keeping a readable backup. Sends the file's text to the configured model provider. Trigger: /caveman-compress.
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
# Caveman Compress ## Purpose > **Data leaves the machine.** Compression sends the file's full text to the model provider that `scripts/compress.py` is configured for: the `claude` CLI, the Anthropic API, or an OpenAI-compatible endpoint. Files whose names look like secrets (`.env`, `credentials`, `secrets`, `.netrc`, …) are refused before they are read. Don't compress a file the provider shouldn't see. Compress natural language files (CLAUDE.md, todos, preferences) into caveman-speak to reduce input tokens. Compressed version overwrites original. Human-readable backup saved as `<filename>.original.md`, but NOT beside the source file — it lives in an out-of-tree data dir (`$XDG_DATA_HOME/caveman-compress/backups/<parent-dir-name>/`, or `%LOCALAPPDATA%\caveman-compress\backups\<parent-dir-name>\` on Windows) so skill auto-loaders don't re-ingest it as a live file. ## Trigger `/caveman-compress <filepath>` or when user asks to compress a memory file. …
Read the whole file at its exact version.
How to install
mdr add juliusbrussee/caveman/caveman-compress@sha256:dd5388f085316f9fThe line at the top of this page pins the label git:20261013.2a6b9a9, 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.
[](https://markdownregistry.com/a/art_nbtdtzk5za67ngba)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 6 versions of this file, between May 10, 2026 and Oct 13, 2026, about one every 31 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261013.2a6b9a9 latest | 2026-10-13 | 2a6b9a9 | 5,578 B | A | view · diff |
| git:20261013.53d4bb1 | 2026-10-13 | 53d4bb1 | 5,590 B | A | view · diff |
| git:20261008.de70f04 | 2026-10-08 | de70f04 | 5,135 B | A | view · diff |
| git:20260829.e11d002 | 2026-08-29 | e11d002 | 4,697 B | A | view · diff |
| git:20260721.dcd51f1 | 2026-07-21 | dcd51f1 | 4,883 B | A | view · diff |
| git:20260510.086c430 | 2026-05-10 | 086c430 | 4,535 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (5578 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
juliusbrussee/caveman · 116,476 stars · license Apache-2.0 · pushed 2026-10-31 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_nbtdtzk5za67ngba GET https://markdownregistry.com/api/v1/resolve?ref=juliusbrussee/caveman/caveman-compress GET https://markdownregistry.com/api/v1/blob/dd5388f085316f9f6a8b34ad906441023033596f8ac1d63b81fb20e8d3f50283
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: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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