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/monkilabs/opencastle/code-commentingnpx skills add monkilabs/opencastle --skill code-commentinggit clone --depth 1 https://github.com/monkilabs/opencastleWhat 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 | $0.00063 | $0.00242 |
| Opus 5 | $0.00032 | $0.00121 |
| Sonnet 5 | $0.00013 | $0.00048 |
| Haiku 4.5 | $0.00006 | $0.00024 |
Grade A, and why
code-commenting 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
Code Commenting
Comment WHY, not WHAT. When a bad name is the real problem, rename instead of commenting. Do comment: non-obvious algorithm choices, regexes, external API constraints, and the rationale behind every magic number or config constant. JSDoc every public API function.
Annotation Tags
TODO planned work · FIXME known bug · HACK workaround (say why and when it can go) · NOTE non-obvious constraint · WARNING side effect / mutation risk · PERF hot path · SECURITY security-sensitive · DEPRECATED (name the replacement and removal version).
Never
- Leave commented-out code — delete it; git has the history.
- Keep a changelog in comments — that is
git log. - Add decorative divider comments.
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 · 19 lines · 63 tokens per session scan A e4cc072fbdeb
code-commenting is a skill published in the GitHub repository monkilabs/opencastle (61 stars, last pushed 4d ago), licensed MIT. It adds 63 tokens to every session and 242 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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