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 frankxai/claude-skills-library --skill repo-masterygit clone --depth 1 https://github.com/frankxai/claude-skills-libraryWrote 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/frankxai/claude-skills-library/repo-mastery)<a href="https://agentmods.dev/skills/frankxai/claude-skills-library/repo-mastery"><img src="https://agentmods.dev/badge/skills/frankxai/claude-skills-library/repo-mastery/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/frankxai/claude-skills-library/repo-mastery"><img src="https://agentmods.dev/badge/skills/frankxai/claude-skills-library/repo-mastery.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 | $0.00101 | $0.00236 |
| Opus 5.5 | $0.00040 | $0.00094 |
| Sonnet 5.5 | $0.00020 | $0.00047 |
| Haiku 4.5 | $0.00010 | $0.00024 |
Grade A, and why
repo-mastery 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 13d 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.
Copies of this mod
1 near-identical copy found in the catalogue:
- repo-mastery — 100% identical, 0 lines differ
What it actually says
Repo Mastery (Grok Edition)
Steps:
- Inventory + read rules (CLAUDE/AGENTS/GROK.md priority)
- Parallel subagents for ACOS core, SIP, products, mcp-servers, skills catalog
- Cross-ref with remote (gh/MCP) + local FS
- Map .grok + .claude compat, skills 100+, hooks, agents
- Apply gates (excellence-review) before any recs
- Structured output: components, critical paths, opportunities. No unrequested MDs.
Embody Frank DNA. Lead with builds.
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.
- 13d ago Changed · +101 tokens per session 839feacd6c4f
- 1mo ago First seen · 17 lines · 0 tokens per session scan A 8bbf38c9ea28
repo-mastery is a skill published in the GitHub repository frankxai/claude-skills-library (47 stars, last pushed today), licensed MIT. It adds 101 tokens to every session and 236 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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wayfinder
A planning method that maps a large, uncertain project into linked decision tickets in a repository's issue tracker. An issue tracker is a system for recording and organizing project work.
scaffold-exercises
A directory scaffold for course exercises, with sections, exercise folders, and optional problem, solution, or explanation versions. It creates the required Markdown files and checks the result with the repository's linter.
migrate-to-shoehorn
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ask-matt
A skill router that helps choose the right workflow or skill for the current task. It maps work from an initial idea through building and shipping, with separate paths for research, prototypes, and multi-session projects.
improve-codebase-architecture
A skill that scans a codebase for places where restructuring could make future changes and testing easier, then produces an HTML report for selected improvements.