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 xr843/Master-skill --skill create-mastergit clone --depth 1 https://github.com/xr843/Master-skillWrote 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/xr843/master-skill/create-master)<a href="https://agentmods.dev/skills/xr843/master-skill/create-master"><img src="https://agentmods.dev/badge/skills/xr843/master-skill/create-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/xr843/master-skill/create-master"><img src="https://agentmods.dev/badge/skills/xr843/master-skill/create-master.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 | $0.00024 | $0.03010 |
| Opus 5.5 | $0.00010 | $0.01204 |
| Sonnet 5.5 | $0.00005 | $0.00602 |
| Haiku 4.5 | $0.00002 | $0.00301 |
Grade A, and why
create-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 5d 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.
The source is not reproduced here
A licence we could not identify
The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.
What ships with it
33 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.
- ETHICS.md 16 KB
- LICENSE 1.5 KB
- masters/.gitkeep 0 B
- prompts/correction_handler.md 3.2 KB
- prompts/doctrine_reviewer.md 2.6 KB
- prompts/intake.md 2.1 KB
- prompts/merger.md 1.6 KB
- prompts/rag_instructions.md 3.7 KB
- prompts/safety_clause.md 2.8 KB
- prompts/sutra_analyzer.md 2.9 KB
- prompts/teaching_builder.md 1.6 KB
- prompts/voice_analyzer.md 4.2 KB
- prompts/voice_builder.md 3.2 KB
- prompts/voice_reviewer.md 2.2 KB
- references/ethics-runtime.md 7.9 KB
- references/fojin-api.md 5.1 KB
- references/README.md 1006 B
- references/source-conventions.md 7.3 KB
- references/teaching-modes.md 5.2 KB
- references/traditions.md 5.3 KB
- references/workflow-details.md 16 KB
- requirements.txt 404 B
- tools/check_deps.py 3.4 KB runs code
- tools/compiled-teaching-sources.json 5.4 KB
- tools/cross_reference.py 15 KB runs code
- tools/fojin_bridge.py 14 KB runs code
- tools/fojin-known-absent.json 9.5 KB
- tools/master_builder.py 20 KB runs code
- tools/rag_query.py 17 KB runs code
- tools/skill_writer.py 12 KB runs code
- tools/sutra_collector.py 7.6 KB runs code
- tools/verify_sources.py 98 KB runs code
- tools/version_manager.py 3.5 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.
- 5d ago First seen · 162 lines · 24 tokens per session scan A 78b203eb1dd1
create-master is a skill published in the GitHub repository xr843/Master-skill (472 stars, last pushed today), with no licence file. It adds 24 tokens to every session and 3,010 once invoked, about $0.0001 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 2026-10-20.
Other skills, from other repositories
sutra-commentary
A source-based comparison of how historical Buddhist commentators explained the same scripture passage. It uses aligned commentary texts and links each result back to the original book.
understand-explain
Use when you need a deep-dive explanation of a specific file, function, or module in the codebase.
founder-coach
Personal leadership development for founders and first-time CEOs. Covers founder archetype identification, delegation frameworks, energy management, CEO calendar audits, leadership style evolution, blind spot identification, imposter syndrome, founder mental health, and succession planning. Use when a founder feels…
baoyu-comic
A tool for creating original educational comics that explain knowledge or ideas through multiple illustrated panels. It supports different art styles and tones and can create several comics in one batch.
eli5
WHAT: Explains a codebase, a folder, a feature, a command or a pull request to someone who knows nothing about it, as a PR Lens canvas whose walkthrough builds the picture one part at a time. WHEN: /eli5 , or asked to explain code simply, for a beginner, a new hire, a non-engineer, or 'like I'm five'. KEYWORDS: eli5…
skill-creation-walkthrough
Step-by-step guide for creating your own Claude Skills, from deciding whether a skill is the right tool to writing the SKILL.md file, structuring reference material, and making it trigger reliably. Use when you want to package a workflow, framework, or repeated task into a reusable Skill, when an existing skill is not…