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 agentmods add skills/fortunto2/rust-code/skill-auditnpx skills add fortunto2/rust-code --skill skill-auditgit clone --depth 1 https://github.com/fortunto2/rust-codeWhat 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 | $0.00078 | $0.01188 |
| Opus 5 | $0.00039 | $0.00594 |
| Sonnet 5 | $0.00016 | $0.00238 |
| Haiku 4.5 | $0.00008 | $0.00119 |
Grade A, and why
solo-skill-audit 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 2d 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 — 101 lines — stays where its author put it; the contents beside it link to each section on GitHub.
/skill-audit
Audit a skill against the quality checklist based on Anthropic's internal best practices for Claude Code skills. Reads the skill's SKILL.md, references/, scripts/, and evaluates across 12 dimensions.
Source: https://x.com/trq212/status/2033949937936085378
Checklist Reference
Full checklist with scoring rubric: references/checklist.md
Steps
-
Locate skill from
$ARGUMENTS:- If name: search
skills/{name}/SKILL.mdin current project, then~/.claude/plugins/**/skills/{name}/SKILL.md - If path: read directly
- If empty: list available skills via Glob
**/skills/*/SKILL.md, ask via AskUserQuestion
- If name: search
-
Read skill contents (parallel):
SKILL.md— main skill filereferences/*— all reference files (if dir exists)scripts/*— all scripts (if dir exists)assets/*— all assets (if dir exists)- Count total lines of SKILL.md
-
Read checklist from
references/checklist.md -
Evaluate each dimension — for every checklist item, assess based on what you read:
For each of the 12 dimensions:
- State what you found (evidence)
- Score 0, 1, or 2 (use rubric from checklist)
- If score < 2: give one specific fix
-
Determine category — classify skill into one of 9 types from checklist. Flag if it straddles multiple.
-
Output scorecard:
## Skill Audit: {skill-name} **Score:** {N}/24 (Grade: {A/B/C/D/F}) **Category:** {type} **SKILL.md:** {N} lines | **References:** {N} files | **Scripts:** {N} files | # | Dimension | Score | Notes | |---|-----------|-------|-------| | 1 | Category Fit | {0-2} | {one line} | | 2 | Description Quality | {0-2} | {one line} | | 3 | Progressive Disclosure | {0-2} | {one line} | | 4 | Gotchas | {0-2} | {one line} | | 5 | Don't State Obvious | {0-2} | {one line} | | 6 | Flexibility | {0-2} | {one line} | | 7 | Setup & Config | {0-2} | {one line} | | 8 | Memory & State | {0-2} | {one line} | | 9 | Scripts & Code | {0-2} | {one line} | | 10 | Allowed Tools | {0-2} | {one line} | | 11 | Argument Handling | {0-2} | {one line} | | 12 | Output & Artifacts | {0-2} | {one line} | ### Top 3 Fixes (highest impact) 1. {fix} 2. {fix} 3. {fix}
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.
- 2d ago First seen · 101 lines · 78 tokens per session scan A d8ed34ddcb32
solo-skill-audit is a skill published in the GitHub repository fortunto2/rust-code (41 stars, last pushed 10d ago), licensed MIT. It adds 78 tokens to every session and 1,188 once invoked, about $0.0004 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 2026-08-30.
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