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 skills add matebenyovszky/agentplaybooks --skill changelog-notesgit clone --depth 1 https://github.com/matebenyovszky/agentplaybooksWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/matebenyovszky/agentplaybooks/changelog-notes)<a href="https://agentmods.dev/skills/matebenyovszky/agentplaybooks/changelog-notes"><img src="https://agentmods.dev/badge/skills/matebenyovszky/agentplaybooks/changelog-notes/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/matebenyovszky/agentplaybooks/changelog-notes"><img src="https://agentmods.dev/badge/skills/matebenyovszky/agentplaybooks/changelog-notes.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What 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 5.1 | $0.00035 | $0.00107 |
| Opus 5.5 | $0.00014 | $0.00043 |
| Sonnet 5.5 | $0.00007 | $0.00021 |
| Haiku 4.5 | $0.00003 | $0.00011 |
Grade A, and why
changelog-notes 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 21d 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
Changelog notes
Write bullets a user or teammate can scan:
- What changed, in product language (not file names).
- Who it affects, if not everyone.
- Breaking changes on their own line, starting with
Breaking:.
Skip internal refactors that have no user-visible effect unless asked.
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.
- 21d ago First seen · 16 lines · 35 tokens per session scan A 36acb18cecae
changelog-notes is a skill published in the GitHub repository matebenyovszky/agentplaybooks (9 stars, last pushed 3d ago), licensed MIT. It adds 35 tokens to every session and 107 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-09-27.
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