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 instructions/zth9/skills/claude-mdgit clone --depth 1 https://github.com/zth9/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/instructions/zth9/skills/claude-md)<a href="https://agentmods.dev/instructions/zth9/skills/claude-md"><img src="https://agentmods.dev/badge/instructions/zth9/skills/claude-md.svg" alt="Measured on agentmods" 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 | $0.00442 | $0.00442 |
| Opus 5 | $0.00221 | $0.00221 |
| Sonnet 5 | $0.00088 | $0.00088 |
| Haiku 4.5 | $0.00044 | $0.00044 |
Grade A, and why
skills CLAUDE.md 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.
What it actually says
Project Guidelines
Commit Rules
- Commit messages must be in English
Skill Naming Convention
- The skill directory name, SKILL.md
namefield, and plugin name must be identical - Use lowercase with hyphens (kebab-case), e.g.,
mac-notifier,mermaid-to-img - This ensures consistency between
/skill-namecommands and plugin management - When renaming a skill, update all three locations:
- Directory name
- SKILL.md
namefield .claude-plugin/marketplace.jsonpluginnameandskillspath
README Updates
- When adding a new skill, update both
README.md(Chinese) andREADME_EN.md(English) - Add the new skill to the "Available Skills" table in both files
Skill Description Rules
The description field in SKILL.md must include two parts:
- What it does: Brief description of the skill's functionality
- When to use: Tell the agent when to trigger this skill
Example format:
description: Convert Mermaid diagrams to images. Use when user wants to export/save/convert Mermaid code to PNG/JPG/SVG/PDF format.
Bad example (missing trigger condition):
description: Convert Mermaid diagrams to images.
Progressive Disclosure
To reduce token consumption, use progressive disclosure when a skill has many scripts or complex documentation:
- For skills with 3+ scripts: Create a
scripts/INDEX.mdfile that briefly describes each script's purpose - Main SKILL.md: Only include the most common usage and reference INDEX.md for details
- Detailed docs: Put comprehensive documentation in separate files (e.g.,
docs/folder)
Example INDEX.md structure:
# Scripts Index
| Script | Purpose |
|--------|---------|
| main.py | Primary entry point for basic usage |
| install.sh | Installation and setup |
| utils.py | Internal utilities (not for direct use) |
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 · 57 lines · 442 tokens per session scan A c4168e9c218d
skills CLAUDE.md is an instructions file published in the GitHub repository zth9/skills (2 stars, last pushed 5mo ago), licensed MIT. It adds 442 tokens to every session, about $0.0022 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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