Borrowing it
Nothing to install: this file belongs to chiruu12/OSS-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/chiruu12/OSS-Skills/main/CLAUDE.mdgit clone --depth 1 https://github.com/chiruu12/OSS-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/chiruu12/oss-skills/claude-md)<a href="https://agentmods.dev/instructions/chiruu12/oss-skills/claude-md"><img src="https://agentmods.dev/badge/instructions/chiruu12/oss-skills/claude-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/chiruu12/oss-skills/claude-md"><img src="https://agentmods.dev/badge/instructions/chiruu12/oss-skills/claude-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 | $0.01602 | $0.01602 |
| Opus 5 | $0.00801 | $0.00801 |
| Sonnet 5 | $0.00320 | $0.00320 |
| Haiku 4.5 | $0.00160 | $0.00160 |
Grade A, and why
OSS-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 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 — 126 lines — stays where its author put it; the contents beside it link to each section on GitHub.
OSS-Skills Development
Project Structure
OSS-Skills/
├── skills/ # All 15 skills
│ ├── oss-evaluate-repo/ # Assess repo health before investing time
│ ├── oss-find-issue/ # Find unclaimed issues matching user skills
│ ├── oss-prep-to-contribute/ # Check eligibility, knowledge gaps, educate
│ ├── oss-setup-dev-env/ # Set up dev environment for unfamiliar repos
│ ├── oss-contribute/ # Deep research, user describes logic, skill helps implement
│ ├── oss-write-tests/ # Write tests as standalone contribution
│ ├── oss-write-docs/ # Contribute documentation improvements
│ ├── oss-submit-pr/ # Pre-flight checks, submit PR
│ ├── oss-post-pr/ # Handle PR review feedback
│ ├── oss-debug-ci/ # Debug CI failures in unfamiliar pipelines
│ ├── oss-second-contribution/ # Growth path to regular contributor
│ ├── oss-review-prs/ # Review PRs to learn and build trust
│ ├── oss-find-real-issues/ # Find code issues not in the tracker
│ ├── oss-explore-repo/ # Guided codebase exploration (architecture, patterns)
│ └── oss-learn-stack/ # Learn unfamiliar tech from the repo's own code
├── docs/ # PLATFORMS.md, PHILOSOPHY.md
├── .github/workflows/setup.yml # Installs every target on Ubuntu and macOS
├── setup # Install script (bash)
├── AGENTS.md # Hand written, for agents reading this repo itself
├── CLAUDE.md # This file
├── CONTRIBUTING.md # How to contribute
├── LICENSE # MIT
└── README.md # Project overview + install + usage
Skill format
Every skill is a directory containing SKILL.md with YAML frontmatter:
---
name: oss-{skill-name}
description: |
What it does. When to use it. Trigger phrases.
---
Sections within each SKILL.md, in order. All fifteen skills carry all eight:
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 · 126 lines · 1,602 tokens per session scan A 89c7a4269c8a
OSS-Skills CLAUDE.md is an instructions file published in the GitHub repository chiruu12/OSS-Skills (62 stars, last pushed 16d ago), licensed MIT. It adds 1,602 tokens to every session, about $0.0080 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.