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/devrimcavusoglu/skern/claude-mdgit clone --depth 1 https://github.com/devrimcavusoglu/skernWhat 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 | $0.00040 | $0.00040 |
| Opus 5 | $0.00020 | $0.00020 |
| Sonnet 5 | $0.00008 | $0.00008 |
| Haiku 4.5 | $0.00004 | $0.00004 |
Grade A, and why
skern 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 2d 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
CLAUDE.md
All agent instructions live in AGENTS.md. Refer to that file for project overview, build commands, conventions, architecture, and workflow details.
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.
- 2d ago First seen · 4 lines · 40 tokens per session scan A 423c9da7412d
skern CLAUDE.md is an instructions file published in the GitHub repository devrimcavusoglu/skern (7 stars, last pushed 13d ago), licensed Apache-2.0. It adds 40 tokens to every session, about $0.0002 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
claude-skill-registry CLAUDE.md
Claude Code instructions for majiayu000/claude-skill-registry, covering claude.md, repo map, how to decide where to edit, generated vs owned files in main and publish flow.
pivoshenko.ai CLAUDE.md
Instructions for pivoshenko/pivoshenko.ai, covering claude.md, what this repo is, commands, asset layout and the sync contract and frontmatter contract.
awesome-qa-skills AGENTS.md
AGENTS.md instructions for naodeng/awesome-qa-skills, covering agents.md, project overview, repository map (edit here), skill.md conventions and agents/openai.yaml.
skills AGENTS.md
Instructions for arcjet/skills, covering agents.md, subagent prompts for test runs, aggregation gotchas, capturing subagent transcripts and eval viewer.
skill-zoo AGENTS.md
Instructions for luochang212/skill-zoo, covering agents.md, how we work, what this project is, project layout and core design decisions.
skills AGENTS.md
AGENTS.md instructions for payloadcms/skills, covering payload skills repository, repository overview, creating a new skill, directory structure and naming conventions.