Borrowing it
Nothing to install: this file belongs to oaustegard/claude-skills. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/oaustegard/claude-skills/main/AGENTS.mdgit clone --depth 1 https://github.com/oaustegard/claude-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/oaustegard/claude-skills/agents-md)<a href="https://agentmods.dev/instructions/oaustegard/claude-skills/agents-md"><img src="https://agentmods.dev/badge/instructions/oaustegard/claude-skills/agents-md/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/instructions/oaustegard/claude-skills/agents-md"><img src="https://agentmods.dev/badge/instructions/oaustegard/claude-skills/agents-md.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 | $0.02463 | $0.02463 |
| Opus 5 | $0.01231 | $0.01231 |
| Sonnet 5 | $0.00493 | $0.00493 |
| Haiku 4.5 | $0.00246 | $0.00246 |
Grade A, and why
claude-skills AGENTS.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 10d 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 — 308 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
This file provides guidance to LLM Agents when working with code in this repository.
Repository Overview
This is a collection of Claude Skills - custom extensions that enhance Claude's capabilities through structured prompt engineering. Each skill is packaged as a directory containing a SKILL.md file with frontmatter metadata and optional supporting resources (scripts, references, assets).
Important Context: This repository is actively developed and is the canonical home of these skills — it is the live source mounted into Muninn / Claude Code on the Web sessions. A few skills target a specific Claude environment (e.g. Claude.ai chat vs. Claude Code), so verify a skill fits the current environment before relying on it — but treat the collection as live and maintained, not legacy.
Skills Availability in This Repository
This repository has project skills available via .claude/skills/ symlinks. However:
Environment-Specific Skills: Many skills are designed for specific Claude environments and may not be appropriate for all contexts. For example:
- invoking-github: Designed for Claude.ai chat (iOS/Android/Web) where native git access isn't available. NOT needed in Claude Code which has native git proxy access.
- Skills targeting specific file formats, APIs, or workflows may only be relevant in certain contexts
- Some skills assume environments with features that may not be present in Claude Code
Before Invoking a Skill: these skills are live and meant to be used — invoke the one that fits the task. Two checks worth keeping:
- Environment fit — a few skills target a specific environment (e.g.
invoking-githubis for Claude.ai chat without native git; in Claude Code, native git /ghis the better tool). Pick the skill that matches where you're running. - Prefer the more direct tool — if a native capability does the job more directly than a skill, use it.
This is about choosing the right tool for the environment, not about treating skills as off-limits.
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.
- 10d ago First seen · 308 lines · 2,463 tokens per session scan A 03d571486dce
claude-skills AGENTS.md is an instructions file published in the GitHub repository oaustegard/claude-skills (148 stars, last pushed today), licensed MIT. It adds 2,463 tokens to every session, about $0.0123 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 2026-08-30.
Other instructions, from other repositories
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
codex AGENTS.md
AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
deepseek-harness AGENTS.md
AGENTS.md instructions for deepseek-ai/deepseek-harness, covering agents.md, pre-stable apis and released session data, repository layout, commands and host sandbox failures.