Borrowing it
Nothing to install: this file belongs to sayeed1999/agent-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/sayeed1999/agent-skills/main/CLAUDE.mdgit clone --depth 1 https://github.com/sayeed1999/agent-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/sayeed1999/agent-skills/claude-md)<a href="https://agentmods.dev/instructions/sayeed1999/agent-skills/claude-md"><img src="https://agentmods.dev/badge/instructions/sayeed1999/agent-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/sayeed1999/agent-skills/claude-md"><img src="https://agentmods.dev/badge/instructions/sayeed1999/agent-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 | $0.01143 | $0.01143 |
| Opus 5 | $0.00571 | $0.00571 |
| Sonnet 5 | $0.00229 | $0.00229 |
| Haiku 4.5 | $0.00114 | $0.00114 |
Grade A, and why
agent-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 8d 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.
This is a copy
95% identical to agent-skills AGENTS.md — 4 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 105 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
Battle-tested engineering judgment for code, refactors, tests, and frontend UI. Merge with project-specific instructions as needed.
Tradeoff: These guidelines bias toward caution over speed. Ultra-terse output style applies during code work. For trivial tasks, use judgment.
Goal: least code, fix problem, no break working stuff.
Output style
- Explain in simple terms like a human.
- Write specs as if any engineer would easily catch. Every spec/adr/decision doc/explanation/answer should be simple, easy to understand for human engineers with no over-complication, no unnecessary details, no repeated redundant explanation in multiple blocks.
- Document core business workflows, decisions, algorithms, approaches.
- No extra explanation than asked.
- No decorative tables, emoji, tool narration. Errors: quote shortest relevant line only.
1. Think before code
- State assumption, no guess.
- Multi interpretation → show all, no pick.
- Unclear ask → stop, name confusion, ask.
- Simpler way exist → say it.
2. Simplicity
- Senior-line estimate; actual >4x → cut.
- No unrequested feature/flexibility/config/error-handling for impossible case.
- Prefer stdlib/dep over hand-roll.
- Function many unrelated thing → split single-responsibility. Already one thing → leave.
- YAGNI/DRY/SOLID when shape need — not checklist.
- Comment why, not what.
- Red flag: single-use abstraction, one-method "manager", options object one caller.
3. Architecture boundaries (Clean Architecture)
- Business rules are the center. Code depends inward, never outward.
- Frameworks are tools, not foundations. UI, ORM, web framework, database are replaceable details.
- Controllers thin: translate input/output only. No business decisions.
- Use cases focused: one use case = one application action.
- Domain models clean: no database, HTTP, framework, or infrastructure knowledge inside.
- Business behavior near business data. Do not scatter rules across controllers/services/helpers.
- Interfaces at real boundaries: external systems, storage, APIs, queues. No fake abstraction.
- Dependencies explicit. Avoid hidden globals, magic imports, service locators, or implicit coupling.
- Composition over inheritance. Assemble behavior instead of deep class trees.
- Organize around business capabilities, not technical layers.
Bad: controllers/ services/ repositories/
Better: orders/ payments/ users/
- Design for change. Protect stable business rules from changing technology.
- Dependency direction matters more than folder structure.
- If removing a framework requires rewriting business logic, the boundary is wrong.
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.
- 8d ago First seen · 105 lines · 1,143 tokens per session scan A 6a79f307ca59
agent-skills CLAUDE.md is an instructions file published in the GitHub repository sayeed1999/agent-skills (6 stars, last pushed 8d ago), licensed MIT. It adds 1,143 tokens to every session, about $0.0057 per session on Opus 5. A static security scan graded it A with 0 findings. It is 95% identical to agent-skills AGENTS.md, differing in 4 lines, and is treated as a copy.
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