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 richfrem/agent-plugins-skills --skill gpt55-critical-auditorgit clone --depth 1 https://github.com/richfrem/agent-plugins-skillsWrote 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/richfrem/agent-plugins-skills/gpt55-critical-auditor)<a href="https://agentmods.dev/skills/richfrem/agent-plugins-skills/gpt55-critical-auditor"><img src="https://agentmods.dev/badge/skills/richfrem/agent-plugins-skills/gpt55-critical-auditor/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/richfrem/agent-plugins-skills/gpt55-critical-auditor"><img src="https://agentmods.dev/badge/skills/richfrem/agent-plugins-skills/gpt55-critical-auditor.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 | $0.00041 | $0.00473 |
| Opus 5 | $0.00020 | $0.00236 |
| Sonnet 5 | $0.00008 | $0.00095 |
| Haiku 4.5 | $0.00004 | $0.00047 |
Grade A, and why
gpt55-critical-auditor 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 11d 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.
Copies of this mod
1 near-identical copy found in the catalogue:
- critical-auditor — 91% identical, 4 lines differ
What it actually says
Purpose
This skill performs a deep, adversarial system audit designed to break:
- runtime enforcement guarantees
- mutation safety assumptions
- eval coverage completeness
- plugin isolation boundaries
This is NOT a compliance review.
This is a failure-seeking audit.
Audit Mandate
You must assume:
- The system is incorrect until proven otherwise
- Enforcement can be bypassed unless proven impossible
- Evals are incomplete
- Plugins will attempt to violate boundaries
- Mutation logic will corrupt state unless isolated
Required Focus Areas
1. Execution Enforcement
- Can HALT be bypassed?
- Are there code paths where violations do not interrupt execution?
- Are exceptions truly global?
2. Mutation Integrity
- Can partial mutations persist?
- Are sandbox boundaries leak-proof?
- Can state escape
temp/sandbox/?
3. Eval Authority
- What behaviors are NOT covered by evals?
- Can mutations exploit blind spots?
- Can regression be reclassified as acceptable?
4. Baseline Integrity
- Can baselines be indirectly manipulated?
- Are diffs actually verified or just declared?
5. Plugin Isolation
- Do any skills:
- chain multiple actions?
- make decisions?
- orchestrate workflows?
6. Orchestration Leakage
- Are there hidden multi-step flows inside skills?
- Are sub-agents behaving like orchestrators?
7. Debt System Exploits
- Can debt accumulate without blocking progress?
- Can agents route around debt enforcement?
Output Requirements
For every issue:
- ID
- Severity (P0/P1/P2)
- Exploit scenario (MANDATORY)
- Exact failure path
- Why enforcement fails
- System impact
- Recommended fix
- Can agent exploit automatically? (YES/NO)
Critical Rule
If you cannot prove a guarantee is enforced:
→ It must be treated as NOT enforced
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.
- 11d ago First seen · 91 lines · 41 tokens per session scan A b5c1e3c932b7
gpt55-critical-auditor is a skill published in the GitHub repository richfrem/agent-plugins-skills (6 stars, last pushed yesterday), licensed MIT. It adds 41 tokens to every session and 473 once invoked, about $0.0002 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 2026-08-31.
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