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/browseros-ai/browseros/write-internal-docsnpx skills add browseros-ai/BrowserOS --skill write-internal-docsgit clone --depth 1 https://github.com/browseros-ai/BrowserOSWhat 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 | $0.00044 | $0.03026 |
| Opus 5 | $0.00022 | $0.01513 |
| Sonnet 5 | $0.00009 | $0.00605 |
| Haiku 4.5 | $0.00004 | $0.00303 |
Grade C, and why
write-internal-docs scanned grade C with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Recursive force deletehighDestructive command
rm -rf with a variable or a broad path is one typo away from removing the wrong tree.
Substitute the literal slug. Every later snippet starts with this line plus the guard `[ -d "$CLONE/.git" ] || { echo "work clone missing: $CLONE"; exit 1; }`. Cleanup is an explicit `rm -rf "$CLONE"` in Step 8, never au The source is not reproduced here
Licensed AGPL-3.0
The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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 · 213 lines · 44 tokens per session scan C 2fd2d22e91c1
write-internal-docs is a skill published in the GitHub repository browseros-ai/BrowserOS (13,451 stars, last pushed today), licensed AGPL-3.0. It adds 44 tokens to every session and 3,026 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it C with 1 finding (recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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