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/snapsynapse/guidecheck/claude-mdgit clone --depth 1 https://github.com/snapsynapse/guidecheckWhat 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 | $0.01831 | $0.01831 |
| Opus 5 | $0.00915 | $0.00915 |
| Sonnet 5 | $0.00366 | $0.00366 |
| Haiku 4.5 | $0.00183 | $0.00183 |
Grade A, and why
guidecheck 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.
The source is not reproduced here
Licensed CC-BY-4.0
The repository is licensed CC-BY-4.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.
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 · 144 lines · 1,831 tokens per session scan A a77bece4555f
guidecheck CLAUDE.md is an instructions file published in the GitHub repository snapsynapse/guidecheck (5 stars, last pushed 12d ago), licensed CC-BY-4.0. It adds 1,831 tokens to every session, about $0.0092 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
claudini CLAUDE.md
Instructions for romovpa/claudini, covering claudini — developer guide, package manager, running benchmarks, run a preset (all methods, all samples) and override method, sample, seed, budget from cli.
claude-guardrails CLAUDE.md
Instructions for dwarvesf/claude-guardrails, covering claude.md, what this repo is, architecture and key design decisions.
operant AGENTS.md
AGENTS.md instructions for saagpatel/operant, covering portfolio context, what this project is, current state, stack and how to run.
aigis CLAUDE.md
Instructions for killertcell428/aigis, covering aigis — project guidelines, zenn記事管理（zenn cli + github連携）, ディレクトリ構成, 記事の作成 and プレビュー.
dsh-auto-review AGENTS.md
Instructions for PerryLink/dsh-auto-review, covering agents.md, layout, hard rules applied here, build and docs.
pydantic-ai-shields CLAUDE.md
Instructions for vstorm-co/pydantic-ai-shields, covering claude.md, project overview, development commands, project structure and core components.