Getting it into your agent
There is no command for this one: it runs only inside a plugin, and the catalogue could not identify which plugin ships it. The source is linked below.
Wrote 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/posteyai/skills/claude-md)<a href="https://agentmods.dev/instructions/posteyai/skills/claude-md"><img src="https://agentmods.dev/badge/instructions/posteyai/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 | $0.04217 | $0.04217 |
| Opus 5 | $0.02108 | $0.02108 |
| Sonnet 5 | $0.00843 | $0.00843 |
| Haiku 4.5 | $0.00422 | $0.00422 |
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.
How it starts
The opening of the file, as written. The whole thing — 251 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
Overview
This repository packages AI-agent skills for Postey — markdown skill definitions plus a zero-dependency Node.js CLI that agents invoke to draft, schedule, and manage social media posts. Multiple skills are planned; postey is the first.
Note: AGENTS.md is a symlink to this file; edits propagate.
Repository Layout
skills/ (repo: posteyai/skills)
├── .claude-plugin/
│ └── marketplace.json — Marketplace catalog listing all plugins
├── .claude/
│ └── settings.json — extraKnownMarketplaces for team auto-install
├── .github/workflows/
│ └── test.yml — CI: node --test + check-versions + check-leaks (2 scopes) + check-setup-links + check-capability-overlap + check-doc-commands + refresh-capability-snapshot + check-mcp-tool-sync
├── scripts/
│ ├── lib/
│ │ ├── skills.js — discoverSkills(): the single definition of "what counts as a skill". Every multi-skill check consumes this
│ │ └── cross-skill-links.js — reference scanner (markdown links + backtick refs) behind check-cross-skill-links.js
│ ├── check-versions.js — CI: verify SKILL.md version == plugin.json == marketplace == pack.json == REGISTRY.md == README badge (per skill) == .codex-plugin == .cursor-plugin
│ ├── set-version.mjs — write every version place from one argument (release step; --check to dry-run)
│ ├── check-release-tag.mjs — CI on main: the released version's tag exists on the remote (rawBase pins it)
│ ├── check-cross-skill-links.js — CI: no skill may reference a file it does not ship
│ ├── check-doc-commands.js — CI: verify every documented command exists in the CLI COMMANDS table
│ ├── check-mcp-tool-sync.js — CI: verify SKILL.md mcp-tools.tools: == MCP server registry
│ ├── check-leaks.js — CI leak gate: hashed-denylist + secret-pattern scanner (`--hash` mode generates denylist entries)
│ └── leak-denylist.json — Committed sha256 hashes (high-entropy terms only) + secret-shape patterns
├── tests/
│ ├── postey-cli.test.js — node:test suite for postey CLI
│ ├── check-leaks.test.js — leak-gate suite (synthetic secret-shaped fixtures; root tests/ is skip-listed in the scanner)
│ ├── skills-discovery.test.js — discoverSkills() against a 2-skill fixture
│ ├── cross-skill-links.test.js — reference gate: leak/dangling/history cases
│ ├── fixtures/ — synthetic skill trees for the two suites above
│ └── pack-manifest.test.js — pack.json completeness + version + tag-pinned rawBase, per skill
└── skills/
├── REGISTRY.md — Index of all skills in this repo
├── _template/ — Starter template for new skills (copy and fill in)
└── postey/ — The postey skill
├── .claude-plugin/
│ └── plugin.json — Plugin manifest (required for /plugin install)
├── SKILL.md — Authoritative skill spec (< 500 lines)
├── CHANGELOG.md — User-facing changelog
├── command-reference.md — Full command table (loaded on demand)
├── routing-guide.md — Extended CLI vs MCP routing reference
├── video-workflow.md — Video transcription + cross-post workflow
├── prompts.md — Platform caption generation templates
├── pack.json — Fetch-install manifest (rawBase pinned to the release tag)
├── bootstrap-prompt.md — One-paste agent setup prompt
├── references/ — Content flows + playbooks (10 files, loaded on demand)
└── scripts/
├── postey.js — Main CLI (zero runtime deps, Node 18+)
├── videoUtils.js — Video transcription + cross-post helpers
└── mediaValidator.js — MIME validation
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 · 251 lines · 4,217 tokens per session scan A 02a49b0d98bc
skills CLAUDE.md is an instructions file published in the GitHub repository posteyai/skills (5 stars, last pushed today), licensed MIT. It adds 4,217 tokens to every session, about $0.0211 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.
Other instructions, from other repositories
openrouter-mcp-multimodal AGENTS.md
AGENTS.md instructions for stabgan/openrouter-mcp-multimodal, covering agent instructions, before you ship, releasing (read this before publishing), short version and version files (must all match package.json).
Plonk AGENTS.md
AGENTS.md instructions for ostapondo/Plonk, covering agent rules, layout, adding a module, build & verify and code style.
cyxj-groksearch CLAUDE.md
Claude Code instructions for chenyuxiaojin/cyxj-groksearch, covering claude.md, 常用命令 and 结构与坑.
mcp-dockhand copilot-review.instructions.md
Copilot instructions for strausmann/mcp-dockhand: When reviewing pull requests in this repository.
minecraft-dev-mcp AGENTS.md
Instructions for MCDxAI/minecraft-dev-mcp, covering agent handbook – minecraft dev mcp, project snapshot, what agents should prioritize, architecture wayfinder (src/) and available mcp tools (for llm surfaces).
bray AGENTS.md
AGENTS.md instructions for forgesworn/bray, covering agents.md — nostr-bray, what this is, build & test, architecture and tool groups.