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 armelhbobdad/oh-my-skills --skill skf-audit-skillgit clone --depth 1 https://github.com/armelhbobdad/oh-my-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/armelhbobdad/oh-my-skills/skf-audit-skill)<a href="https://agentmods.dev/skills/armelhbobdad/oh-my-skills/skf-audit-skill"><img src="https://agentmods.dev/badge/skills/armelhbobdad/oh-my-skills/skf-audit-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/armelhbobdad/oh-my-skills/skf-audit-skill"><img src="https://agentmods.dev/badge/skills/armelhbobdad/oh-my-skills/skf-audit-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 | $0.00036 | $0.00770 |
| Opus 5 | $0.00018 | $0.00385 |
| Sonnet 5 | $0.00007 | $0.00154 |
| Haiku 4.5 | $0.00004 | $0.00077 |
Grade A, and why
skf-audit-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 12d 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.
How it starts
The opening of the file, as written. The whole thing — 60 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Audit Skill
Overview
Detects drift between an existing skill and its current source code, producing a severity-graded drift report with AST-backed findings and actionable remediation suggestions. Every finding must trace to actual code with file:line citations — structural truth over semantic guessing. Analysis depth adapts based on detected forge tier (Quick/Forge/Forge+/Deep) with graceful degradation. Stack skills are supported: code-mode stacks are audited per-library against their sources; compose-mode stacks check constituent freshness via metadata hash comparison.
Role
You are a skill auditor operating in Ferris Audit mode. This is a deterministic analysis workflow — you enforce the zero-hallucination principle. You bring AST analysis expertise and drift detection methodology, while the source code provides the ground truth.
Workflow Rules
These rules apply to every step in this workflow:
- Never fabricate findings — all data must trace to source code with file:line citations
- Read each step file completely before taking any action
- Follow the mandatory sequence in each step exactly — do not skip, reorder, or optimize
- Only load one step file at a time — never preload future steps
- Update
stepsCompletedin output file frontmatter before loading next step - If any instruction references a subprocess or tool you lack, achieve the outcome in your main context thread
- Always communicate in
{communication_language} - If
{headless_mode}is true, auto-proceed through confirmation gates with their default action and log each auto-decision
Stages
| # | Step | File | Auto-proceed |
|---|---|---|---|
| 1 | Initialize & Baseline | steps-c/step-01-init.md | No (confirm) |
| 2 | Re-Index Source | steps-c/step-02-re-index.md | Yes |
| 3 | Structural Diff | steps-c/step-03-structural-diff.md | Yes |
| 4 | Semantic Diff | steps-c/step-04-semantic-diff.md | Yes (skip at non-Deep) |
| 5 | Severity Classification | steps-c/step-05-severity-classify.md | Yes |
| 6 | Report | steps-c/step-06-report.md | Yes |
| 7 | Workflow Health Check | steps-c/step-07-health-check.md | Yes |
What ships with it
9 files 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.
- assets/drift-report-template.md 916 B
- references/severity-rules.md 2.4 KB
- steps-c/step-01-init.md 12 KB
- steps-c/step-02-re-index.md 9.5 KB
- steps-c/step-03-structural-diff.md 9.0 KB
- steps-c/step-04-semantic-diff.md 6.8 KB
- steps-c/step-05-severity-classify.md 6.2 KB
- steps-c/step-06-report.md 7.6 KB
- steps-c/step-07-health-check.md 803 B
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.
- 12d ago First seen · 60 lines · 36 tokens per session scan A 9f8af5a8cf22
skf-audit-skill is a skill published in the GitHub repository armelhbobdad/oh-my-skills (7 stars, last pushed 4mo ago), licensed Apache-2.0. It adds 36 tokens to every session and 770 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.
Other skills, from other repositories
skf-audit-skill
Drift detection between skill and current source code. Use when the user requests to "audit a skill" or "audit skill" for drift.
skf-campaign
Campaign orchestration — multi-library skill production with dependency tracking, file-based state, and resume. Use when the user asks to "run a campaign" or "orchestrate skills.".
skf-create-stack-skill
Consolidated project stack skill with integration patterns — code-mode (analyzes manifests) or compose-mode (synthesizes from existing skills + architecture doc). Use when the user requests to "create a stack skill", "forge a stack", or "stack this project".
skf-drop-skill
Drop a specific skill version or an entire skill — soft (deprecate) or hard (purge) with platform context rebuild. Use when the user requests to "drop" or "remove a skill.".
skf-export-skill
Package for distribution and inject context into CLAUDE.md/AGENTS.md/.cursorrules. Use when the user requests to "export" or "package a skill.".
skf-forger
Skill compilation specialist — the forge master. Use when the user asks to "talk to Ferris" or requests the "Skill Forge agent.".