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/nitineeen/beerman/skill-makernpx skills add nitineeen/beerman --skill skill-makergit clone --depth 1 https://github.com/nitineeen/beermanWhat 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 | $0.00036 | $0.00195 |
| Opus 5 | $0.00018 | $0.00097 |
| Sonnet 5 | $0.00007 | $0.00039 |
| Haiku 4.5 | $0.00004 | $0.00019 |
Grade A, and why
skill-maker 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 yesterday.
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.
What it actually says
Custom Skill Maker Guideline
Follow this workflow to dynamically scaffold new agent skills:
Rules
- Detect Repeatable Workflows:
- Identify recurring verification checklists, deployment scripts, or environment configs.
- Scaffold & Write:
- Create a directory
.agents/skills/<skill-name>/. - Write a
SKILL.mdfile with the exact YAML frontmatter header format:name: <name> description: <descriptive summary> - Provide highly descriptive, step-by-step markdown instructions in the body.
- Create a directory
- Register and Sync:
- Write the corresponding skill file under
packages/skills/to preserve in the monorepo source.
- Write the corresponding skill file under
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.
- yesterday First seen · 23 lines · 0 tokens per session scan A b57d8213fc57
skill-maker is a skill published in the GitHub repository nitineeen/beerman (0 stars, last pushed 1mo ago), licensed MIT. It adds 36 tokens to every session and 195 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 2026-08-31.
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