Borrowing it
Nothing to install: this file belongs to chengzhongwei/Prompt-sensei. 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/chengzhongwei/Prompt-sensei/main/CLAUDE.mdgit clone --depth 1 https://github.com/chengzhongwei/Prompt-senseiWrote 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/chengzhongwei/prompt-sensei/claude-md)<a href="https://agentmods.dev/instructions/chengzhongwei/prompt-sensei/claude-md"><img src="https://agentmods.dev/badge/instructions/chengzhongwei/prompt-sensei/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/chengzhongwei/prompt-sensei/claude-md"><img src="https://agentmods.dev/badge/instructions/chengzhongwei/prompt-sensei/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 | $0.02015 | $0.02015 |
| Opus 5 | $0.01007 | $0.01007 |
| Sonnet 5 | $0.00403 | $0.00403 |
| Haiku 4.5 | $0.00201 | $0.00201 |
Grade B, and why
Prompt-sensei CLAUDE.md scanned grade B with 1 finding 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 11d 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.
Reads agent configuration directoriesmediumAgent snooping
.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.
- Claude Code and Codex both support host-native auto-start hooks. Claude Code uses `~/.claude/settings.json` or `.claude/settings.local.json`; Codex uses `~/.codex/hooks.json` or `.codex/hooks.json`. How it starts
The opening of the file, as written. The whole thing — 132 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Repository Guidance
This project is a local-first prompt-coaching skill for AI coding agents. Keep changes aligned with the product principles: quiet, stage-aware, encouraging, privacy-aware, and useful for engineering workflows.
Documentation Shape
- Keep
SKILL.mdcompact. It should be a runtime router plus core scoring behavior, not a full manual. - Keep
README.mdandREADME-zh.mdbeginner-friendly. They should explain the happy path, command surface, and privacy promise without embedding long setup flows or hook JSON. - Move low-frequency or advanced details into focused docs:
docs/skill-flows.mdfor agent-facing setup, settings, hooks, and lookback flow details.docs/advanced-setup.mdanddocs/advanced-setup-zh.mdfor user-facing advanced configuration.docs/faq.mdfor skeptical questions, usefulness claims, support scope, feedback channels, and quick public-facing answers.docs/privacy.mdfor storage, consent, redaction, deletion, and network behavior.examples/claude-settings.example.jsonfor copyable Claude Code hook JSON.examples/codex-hooks.example.jsonfor copyable Codex hook JSON.
- Prefer short links from
SKILL.mdand README files to those deeper docs instead of duplicating the same instructions. - Avoid large inline JSON blocks in
SKILL.mdor README unless they are essential for first-use comprehension. - Before adding more than a short paragraph to
SKILL.mdor README, ask whether it belongs in a reference doc instead. - As a rough guardrail, try to keep
SKILL.mdunder 250 lines and each README under 325 lines. If a necessary change exceeds that, move supporting detail intodocs/.
When Changing Behavior
Treat behavior changes as cross-file changes by default. Before finalizing, do a related-file sweep; do not rely only on the file you initially touched or the checklist below.
- Update
SKILL.mdwhen command behavior, scoring behavior, consent, storage, lookback, update checks, or report output changes. - Update
docs/skill-flows.mdwhen setup, settings, hook, or lookback agent workflow details change. - Update both
README.mdandREADME-zh.mdfor user-facing behavior, install steps, essential command lists, examples, and privacy notes. - Update
docs/advanced-setup.mdanddocs/advanced-setup-zh.mdfor user-facing advanced settings, hook setup, Codex sync, or optional storage behavior. - Update
docs/privacy.mdfor any storage, deletion, or network behavior changes. - Update
docs/scoring-rubric.mdwhen stage formulas, dimensions, flags, tip kinds, tip priority rules, or score labels change. - Update
docs/philosophy.mdwhen product framing changes around scoring, reports, privacy, outcomes, or the teaching model. - Update
docs/faq.mdwhen support scope, privacy posture, usefulness claims, feedback channels, or common adoption objections change. - Update
examples/debugging-journey.mdwhen scoring examples, report style, or recommended prompt patterns change. - Update
examples/prompt-gallery.mdwhen improve-mode examples, copyable before/after prompts, or adoption examples change. - Update
eval/prompts.jsonwhen scoring behavior, stage definitions, tip kinds, or teaching expectations change. - Keep host hook snippets in
examples/claude-settings.example.jsonandexamples/codex-hooks.example.json, and reference them from docs. Do not duplicate full hook JSON inSKILL.mdor README. - Keep the public command surface consistent across
SKILL.md,README.md,README-zh.md, and examples. The public prompt-rewrite command is/prompt-sensei improve; legacyreview/scorewording should only appear as a redirect toimprove. - Keep beginner and advanced paths separate: basic observe/improve/lookback should work without hook setup, while optional settings can live in advanced docs.
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.
- 11d ago First seen · 132 lines · 2,015 tokens per session scan B 490cb5edd7ff
Prompt-sensei CLAUDE.md is an instructions file published in the GitHub repository chengzhongwei/Prompt-sensei (107 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 2,015 tokens to every session, about $0.0101 per session on Opus 5. A static security scan graded it B with 1 finding (reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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