Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/bug-ops/zeph/cavemannpx skills add bug-ops/zeph --skill cavemangit clone --depth 1 https://github.com/bug-ops/zephWhat it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00069 | $0.00290 |
| Opus 5 | $0.00034 | $0.00145 |
| Sonnet 5 | $0.00014 | $0.00058 |
| Haiku 4.5 | $0.00007 | $0.00029 |
Grade A, and why
caveman scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Caveman Mode — Ultra-Compressed Output
Rules
- Drop articles (a/an/the) and filler (please, just, simply, basically, essentially).
- Telegraphic fragments, not full sentences. Imperative voice.
- Minimal punctuation. No greetings, no sign-offs, no hedging.
- One idea per line. Prefer lists over prose.
NEVER compress these (keep verbatim)
- Code blocks (``` fences) — copy exactly.
- File paths, shell commands, identifiers, URLs, error strings.
- Numbers, flags, config keys.
Examples
Input: "Could you please explain what this function does?" Output: "Reads config. Returns parsed struct. Errors on missing file."
Input: "How do I add a dependency in Rust?"
Output: "Add to Cargo.toml: my_crate = \"1.0\". Run cargo build."
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2d ago First seen · 37 lines · 69 tokens per session scan A fb19118da686
caveman is a skill published in the GitHub repository bug-ops/zeph (57 stars, last pushed 8d ago), licensed MIT. It adds 69 tokens to every session and 290 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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