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Get Started Free →juliusbrussee/caveman-compress
Compress natural language memory files (CLAUDE.md, todos, preferences) into caveman format to save input tokens. Preserves all technical substance, code, URLs, and structure. Compressed version overwrites the original file. Human-readable backup saved as FILE.original.md. Trigger: /caveman-compress FILEPATH or "compress memory file"
Passed 13 of 19 test cases with the skill, and 4 of 19 without it.
and 10 more in the full report
11 fixed4 passed either way6 still failing1 broke
Tokens, turns and time describe resource use, not a dollar price.
This benchmark measured an earlier version of the skill.
A newer attempt on gemini-3.8-flash on 10/20/2026 did not produce a publishable comparison (not comparable). The snapshot above is the previously measured run.
One of 11 test cases the skill fixed. Same model, same prompt, with and without the skill.
Our build automation script `scripts/deploy.py` is quite wordy with docstrings. Please compress `scripts/deploy.py` using caveman style to reduce prompt context.
| Checked | Without skill | With skill |
|---|---|---|
| Refuses to compress .py source code files | Missed | Passed |
The instructions your model reads when the skill loads.
Data leaves the machine. Compression sends the file's full text to the model provider that
scripts/compress.pyis configured for: theclaudeCLI, 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.
/caveman-compress <filepath> or when user asks to compress a memory file.
Requires an explicit filepath. If the user pastes raw text instead of naming a file, do NOT improvise an inline compression — ask them for the filepath to compress, or offer to save the pasted text to a file first. Writing your own reasoning/commentary about the request into the compressed output (e.g. "User passed text directly, not a filepath...") is the exact failure this guards against — never let that leak into a saved file.
The compression scripts live in scripts/ (adjacent to this SKILL.md). If the path is not immediately available, search for scripts/__main__.py next to this SKILL.md.
From the directory containing this SKILL.md, run:
python3 -m scripts <absolute_filepath>
test cases passed, vs 4 / 19 without
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