Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/vasilyu1983/AI-Agents-publicnpx agentmods add skills/vasilyu1983/ai-agents-public/agents-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/vasilyu1983/ai-agents-public/agents-skills)<a href="https://agentmods.dev/skills/vasilyu1983/ai-agents-public/agents-skills"><img src="https://agentmods.dev/badge/skills/vasilyu1983/ai-agents-public/agents-skills/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/vasilyu1983/ai-agents-public/agents-skills"><img src="https://agentmods.dev/badge/skills/vasilyu1983/ai-agents-public/agents-skills.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00035 | $0.04482 |
| Opus 5 | $0.00017 | $0.02241 |
| Sonnet 5 | $0.00007 | $0.00896 |
| Haiku 4.5 | $0.00003 | $0.00448 |
Grade A, and why
agents-skills 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 — 285 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Agent Skills
Use this skill to create or modernize skill bundles without conflating the portable core contract with runtime-specific extensions.
Scope — this is a delta on the standard, not a replacement. Generic skill authoring, scaffolding, and eval mechanics are owned by the Agent Skills open spec and the standard
skill-creatorskill (andplugin-dev:skill-development). Use those for boilerplate. This skill owns only the repo-specific delta the standard cannot provide: dual-runtime portability (Claude Code + Codex), catalog/graph gating, and router/composition patterns. Do not replicate the standard here — link to it.
Quick Reference
| Task | Read or Run | Outcome |
|---|---|---|
| Scaffold a new skill | skill-creator (standard skill) |
Generates the boilerplate; then apply portability discipline from references/frontmatter-reference.md |
| Modernize an existing skill | python3 scripts/validate_skill.py <skill-dir> |
Finds contract drift, broken links, stale sources, and missing TOCs |
| Add runtime-specific metadata | references/frontmatter-reference.md |
Scopes extensions to the target runtime instead of treating them as universal |
| Decide how to split content | references/skill-patterns.md |
Keeps SKILL.md small and moves detail into references/ or scripts/ |
| Validate behavior, not just syntax | references/skill-validation.md |
Builds trigger, non-trigger, and navigation evals |
| Check Anthropic-specific details | references/anthropic-skills-guide.md |
Uses Anthropic guidance without treating it as the portable baseline |
| Ship one skill to multiple runtimes without drift | references/dual-distribution.md |
Single canonical system prompt + wrapper distributions + drift-check gate |
| Design router/composable skill flow | references/skill-patterns.md#pattern-10-stage-based-selection-pipeline |
Separates sources, enrichment, filters, scoring, selection, validation, and side effects |
What ships with it
17 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.
- agents/openai.yaml 331 B
- data/sources.json 8.0 KB
- learnings.consolidated.md 589 B
- learnings.md 2.9 KB
- references/anthropic-skills-guide.md 18 KB
- references/dual-distribution.md 5.0 KB
- references/frontmatter-reference.md 16 KB
- references/skill-patterns.md 13 KB
- references/skill-validation.md 13 KB
- references/skill-vs-agent-decision.md 7.5 KB
- scripts/audit_skill_metadata.py 19 KB runs code
- scripts/build_skill_graph.py 6.5 KB runs code
- scripts/test_audit_skill_metadata.py 9.2 KB runs code
- scripts/test_build_skill_graph.py 2.7 KB runs code
- scripts/test_validate_skill.py 6.0 KB runs code
- scripts/validate_catalog.py 6.3 KB runs code
- scripts/validate_skill.py 16 KB runs code
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 Changed · +1 lines 83202798a8a2
- 12d ago First seen · 284 lines · 35 tokens per session scan A 6233989dcf23
agents-skills is a skill published in the GitHub repository vasilyu1983/AI-Agents-public (87 stars, last pushed 9d ago), licensed MIT. It adds 35 tokens to every session and 4,482 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 2026-08-30.
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