Borrowing it
Nothing to install: this file belongs to pavel-molyanov/molyanov-ai-dev. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/pavel-molyanov/molyanov-ai-dev/main/.agents/skills/skill-master/SKILL.mdgit clone --depth 1 https://github.com/pavel-molyanov/molyanov-ai-devWrote 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/pavel-molyanov/molyanov-ai-dev/skill-master)<a href="https://agentmods.dev/skills/pavel-molyanov/molyanov-ai-dev/skill-master"><img src="https://agentmods.dev/badge/skills/pavel-molyanov/molyanov-ai-dev/skill-master/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/pavel-molyanov/molyanov-ai-dev/skill-master"><img src="https://agentmods.dev/badge/skills/pavel-molyanov/molyanov-ai-dev/skill-master.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 3 findings, up to high
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- high Rogue Agent · line 7 Skill modifies its own code, configuration, or behavior at runtime. Self-modification enables an agent to escalate privileges, disable safety constraints, or install persistent backdoors.Fix: Prevent the skill from modifying its own code, SKILL.md, or configuration files. Treat skill files as read-only at runtime.
- medium Rogue Agent · line 7 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
- medium Rogue Agent · line 181 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
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 | $0.00101 | $0.03781 |
| Opus 5.5 | $0.00040 | $0.01512 |
| Sonnet 5.5 | $0.00020 | $0.00756 |
| Haiku 4.5 | $0.00010 | $0.00378 |
Grade A, and why
skill-master scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 368 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Skill Creator
Manual Claude-to-Codex Sync
Claude-side is the source of truth for the converter's allowlist: global CLAUDE.md, skills/**,
agents/*.md, and commands/*.md; or project CLAUDE.md, .claude/skills/**,
.claude/agents/*.md, and .claude/commands/*.md. Codex-side outputs are generated runtime. No
scheduled job performs this conversion. After editing an allowlisted source, the editing agent runs
the matching command immediately and reviews the generated result:
~/.claude/scripts/sync-to-codex.sh --apply # global ~/.claude/**
~/.claude/scripts/sync-to-codex.sh --project "$PWD" --apply # project .claude/**
Do not edit generated Codex files directly. If one was changed, move the intended content to its Claude source, discard the direct generated edit, and run the matching command above to regenerate Codex.
Git hooks are fallback checks: pre-commit repeats project sync, rejects partial staging, and stages
generated outputs; pre-push blocks remaining drift. For a project, commit generated
.agents/skills/**, .codex/**, and AGENTS.md changes with their Claude sources, except
host-local .codex/.sync/**. For global changes, commit and push generated outputs in the
separate ~/.codex repository before pushing ~/.claude; global pre-push enforces that ordering.
If sync reports a conflict or validation error, stop and report it. When an approved deletion or rename produces an orphan, inspect every reported target and, only when all targets correspond to the approved source change, run the matching reviewed prune command:
~/.claude/scripts/sync-to-codex.sh --apply --prune --confirm-delete
~/.claude/scripts/sync-to-codex.sh --project "$PWD" --apply --prune --confirm-delete
Stop instead if the orphan list contains anything else.
Bundled resources and the sync: Markdown files (SKILL.md, references/*.md) are text-adapted
during sync (Claude tool names to Codex equivalents). Every other bundled file—scripts/,
assets/, images, and data—is copied byte-for-byte. Bundled executables must therefore remain
runtime-neutral: do not hardcode .claude paths or Claude-only tool names, resolve resources
relative to their own package, and keep runtime-specific instructions in Markdown that the
converter adapts.
What ships with it
6 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.
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.
- 6d ago Changed · +63 lines · +22 tokens per session 5a55774fe164
- 1mo ago First seen · 305 lines · 79 tokens per session scan A 4dee0cb429ac
skill-master is a skill published in the GitHub repository pavel-molyanov/molyanov-ai-dev (300 stars, last pushed 6d ago), licensed MIT. It adds 101 tokens to every session and 3,781 once invoked, about $0.0004 per session on Opus 5.5. 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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