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 Vibe-Marketer/plugins-and-skills --skill audit-extensionsgit clone --depth 1 https://github.com/Vibe-Marketer/plugins-and-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/vibe-marketer/plugins-and-skills/audit-extensions)<a href="https://agentmods.dev/skills/vibe-marketer/plugins-and-skills/audit-extensions"><img src="https://agentmods.dev/badge/skills/vibe-marketer/plugins-and-skills/audit-extensions/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/vibe-marketer/plugins-and-skills/audit-extensions"><img src="https://agentmods.dev/badge/skills/vibe-marketer/plugins-and-skills/audit-extensions.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 | $0.00139 | $0.01357 |
| Opus 5 | $0.00069 | $0.00678 |
| Sonnet 5 | $0.00028 | $0.00271 |
| Haiku 4.5 | $0.00014 | $0.00136 |
Grade A, and why
audit-extensions 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 8d 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 — 146 lines — stays where its author put it; the contents beside it link to each section on GitHub.
<essential_principles>
-
Structure Before Content. Check that the extension follows the correct format before evaluating what it says. A beautifully written skill with invalid YAML is still broken.
-
Severity-Based Reporting. Not all issues are equal. Critical issues prevent the extension from working. Recommendations improve quality. Quick fixes are cosmetic. Report in this order.
-
Always Include Strengths. An audit that only lists problems demoralizes. Start with what the extension does well, then address issues.
-
Specific Locations. Every finding must reference a file path and line number (or line range). "The description is too vague" is not actionable. "Line 3: description lacks trigger keywords -- add phrases like 'create a hook', 'add validation'" is actionable.
-
Auto-Detect Extension Type. Determine whether the target is a skill, command, or subagent from the file path and structure. Don't require the user to specify.
</essential_principles>
Provide a path to any Claude Code extension:
- Skill: Path to a skill directory or SKILL.md file
- Slash command: Path to a .md command file
- Subagent: Path to an agents/ directory or agent config
The audit type will be auto-detected from the path and file structure.
Auto-detection logic:
- If path contains
SKILL.mdor path is a directory containingSKILL.md-> skill audit - If path is a
.mdfile withallowed-toolsin frontmatter -> command audit - If path contains agent configuration with
identifierfield -> subagent audit - If ambiguous, ask user to clarify
After detecting type, read references/audit-checklist.md for the relevant checklist, then execute the audit.
<audit_process>
For all extension types, follow this process:
Phase 1: Read
- Read the extension file(s) completely
- Read any referenced files (workflows, references, templates)
- Note file sizes (line counts)
Phase 2: Check Run through every item in the relevant checklist (see references/audit-checklist.md). For each item:
- PASS: Requirement met
- FAIL: Requirement not met (record file:line, severity, fix)
- N/A: Check doesn't apply to this extension
Phase 3: Anti-Pattern Scan Check against all 18 anti-patterns from shared/rules/ANTI-PATTERNS.md:
- Markdown headings in skill body
- Hybrid XML/markdown
- Unclosed or improperly nested tags
- SKILL.md over 500 lines
- Deeply nested references
- Vague description
- Wrong point of view
- Missing trigger keywords
- Agent-focused instead of user-focused
- Over-engineered simple skills
- Under-specified complex skills
- Too many options without defaults
- Duplicating framework documentation
- Missing success criteria
- Explaining what Claude already knows
- Non-descriptive names
- Wrong case
- Name doesn't match directory
Phase 4: Report Organize findings by severity and present with strengths first.
</audit_process>
<output_format>
## Audit Report: [extension-name] ([type])
### Strengths
- [What the extension does well -- always include at least 2 items]
### Critical Issues (must fix)
- **[C1]** [file:line] [Issue description]
Fix: [Specific remediation]
### Recommendations (should fix)
- **[R1]** [file:line] [Issue description]
Fix: [Specific remediation]
### Quick Fixes (nice to have)
- **[Q1]** [file:line] [Issue description]
Fix: [Specific remediation]
### Summary
- Checks passed: X/Y
- Critical: N | Recommendations: N | Quick fixes: N
- Anti-patterns detected: N/18
### Next Steps
- [ ] Fix critical issues
- [ ] Address recommendations
- [ ] Re-run audit to verify fixes
- [ ] Run trigger test (evaluate-skills) if description was changed
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.
- 8d ago First seen · 146 lines · 139 tokens per session scan A 0e6103c2b802
audit-extensions is a skill published in the GitHub repository Vibe-Marketer/plugins-and-skills (2 stars, last pushed 6mo ago), licensed MIT. It adds 139 tokens to every session and 1,357 once invoked, about $0.0007 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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