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 majiayu000/claude-skill-registry --skill agent-check-claude-world-director-mode-litegit clone --depth 1 https://github.com/majiayu000/claude-skill-registryWrote 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/majiayu000/claude-skill-registry/agent-check-claude-world-director-mode-lite)<a href="https://agentmods.dev/skills/majiayu000/claude-skill-registry/agent-check-claude-world-director-mode-lite"><img src="https://agentmods.dev/badge/skills/majiayu000/claude-skill-registry/agent-check-claude-world-director-mode-lite/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/majiayu000/claude-skill-registry/agent-check-claude-world-director-mode-lite"><img src="https://agentmods.dev/badge/skills/majiayu000/claude-skill-registry/agent-check-claude-world-director-mode-lite.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00010 | $0.01031 |
| Opus 5 | $0.00005 | $0.00515 |
| Sonnet 5 | $0.00002 | $0.00206 |
| Haiku 4.5 | $0.00001 | $0.00103 |
Grade A, and why
agent-check 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 9d 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 — 144 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Agent File Validator
Validate agent files in .claude/agents/ for correct format.
Validation Target
- With argument: validate specific file
- Without: validate all
.claude/agents/*.md
Required Frontmatter
---
name: agent-name # Required: lowercase, hyphenated, 3-50 chars
description: > # Required: 10-5000 chars, include triggering conditions + <example> blocks
Use this agent when [conditions]. Examples:
<example>
Context: [situation]
user: "[request]"
assistant: "[response using this agent]"
</example>
color: cyan # Required: yellow, red, green, blue, magenta, cyan
model: sonnet # Required: inherit, haiku, sonnet, opus, best, sonnet[1m], opus[1m], opusplan
tools: # Optional: YAML list (omit = all tools available)
- Read
- Write
- Grep
# forkContext: "true" # Optional: run in forked context (string "true"/"false")
# maxTurns: 20 # Optional: max conversation turns (positive integer)
skills: # Optional: auto-load skills (array)
- linked-skill
memory: # Optional: memory scopes to load (array)
- user
- project
- local
mcpServers: # Optional: MCP server refs or objects (array)
- server-name
hooks: # Optional: agent-scoped lifecycle hooks
PreToolUse:
- matcher: Write
hooks:
- type: command
command: ./validate.sh
PostToolUse:
- matcher: Bash
hooks:
- type: command
command: ./log.sh
permissionMode: default # Optional: permission handling
disallowedTools: # Optional: explicit tool blocking
- NotebookEdit
---
Valid Tools
Read, Write, Edit, Bash, Grep, Glob, Task,
WebFetch, WebSearch, TodoWrite, NotebookEdit
Valid Colors
yellow, red, green, blue, magenta, cyan
Valid Models
inherit, haiku, sonnet, opus, best, sonnet[1m], opus[1m], opusplan
Validation Checklist
What ships with it
1 file 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.
- 9d ago First seen · 144 lines · 10 tokens per session scan A 704bcf205110
agent-check is a skill published in the GitHub repository majiayu000/claude-skill-registry (606 stars, last pushed today), licensed MIT. It adds 10 tokens to every session and 1,031 once invoked, about $0.0001 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 2026-09-03.
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