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 SecurityTalent/bugskill-ai --skill amend-skillgit clone --depth 1 https://github.com/SecurityTalent/bugskill-aiWrote 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/securitytalent/bugskill-ai/amend-skill)<a href="https://agentmods.dev/skills/securitytalent/bugskill-ai/amend-skill"><img src="https://agentmods.dev/badge/skills/securitytalent/bugskill-ai/amend-skill/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/securitytalent/bugskill-ai/amend-skill"><img src="https://agentmods.dev/badge/skills/securitytalent/bugskill-ai/amend-skill.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 | $0.00121 | $0.01092 |
| Opus 5.5 | $0.00048 | $0.00437 |
| Sonnet 5.5 | $0.00024 | $0.00218 |
| Haiku 4.5 | $0.00012 | $0.00109 |
Grade A, and why
amend-skill 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 20d 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.
This is a copy
100% identical to amend-skill — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 99 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Amend Skill
Purpose
Skills degrade over time as targets change, new bypass techniques emerge, and failure patterns accumulate. This skill closes the feedback loop: it reads execution history, identifies what is systematically failing, and proposes a minimal surgical amendment to the skill.
Trigger Conditions
Activate this skill when:
- User says "improve this skill", "fix this skill", "update this skill", "amend this skill"
- User says "why does X keep failing" where X is a skill name
- User says "add this to the skill" after describing a new technique that worked
observations/<skill-name>/runs.mdcontains 3 or more entries withoutcome: fail
Methodology
- Identify the target skill — confirm the skill name with the user if ambiguous.
- Read the skill — load
skills/<bucket>/<category>/<skill-name>/SKILL.mdin full. - Read the observations — load
observations/<skill-name>/runs.md. - Analyze failure patterns:
- Which steps consistently fail?
- Which payloads are blocked or produce wrong output?
- Which trigger conditions are missing or too broad?
- Are there new bypass techniques that worked but aren't documented?
- Is the output format causing downstream confusion?
- Formulate a single targeted amendment — one focused change rather than a full rewrite. The amendment should be one of:
- Tighten trigger: remove or refine a trigger condition that causes false activation
- Add missing condition: add a step, payload, or bypass that is now needed
- Reorder steps: move a high-value step earlier to avoid wasted time
- Fix payload: update an outdated payload that no longer works
- Change output format: restructure how the skill presents findings
- Output the amendment as a unified diff — show old text and proposed new text side by side.
- Ask for confirmation — do not apply until the user approves.
- Apply and record — edit the SKILL.md, then append to
observations/<skill-name>/runs.md:
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.
- 20d ago First seen · 99 lines · 121 tokens per session scan A 10b1e4866da3
amend-skill is a skill published in the GitHub repository SecurityTalent/bugskill-ai (13 stars, last pushed 21d ago), licensed MIT. It adds 121 tokens to every session and 1,092 once invoked, about $0.0005 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to amend-skill, differing in 0 lines, and is treated as a copy.
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