Borrowing it
Nothing to install: this file belongs to sebyx07/claude-code-bible. 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/sebyx07/claude-code-bible/main/CLAUDE.mdgit clone --depth 1 https://github.com/sebyx07/claude-code-bibleWrote 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/sebyx07/claude-code-bible/claude-md)<a href="https://agentmods.dev/instructions/sebyx07/claude-code-bible/claude-md"><img src="https://agentmods.dev/badge/instructions/sebyx07/claude-code-bible/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/sebyx07/claude-code-bible/claude-md"><img src="https://agentmods.dev/badge/instructions/sebyx07/claude-code-bible/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 | $0.00858 | $0.00858 |
| Opus 5.5 | $0.00343 | $0.00343 |
| Sonnet 5.5 | $0.00172 | $0.00172 |
| Haiku 4.5 | $0.00086 | $0.00086 |
Grade A, and why
claude-code-bible 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 2mo 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 — 61 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
What this repo is
A prose book — "The Claude Code Bible" — distributed as Markdown. No source code, no build, no tests, no CI. Edits ship by committing .md files.
README.md— landing page and chapter index (TOC table, quick wins, license).docs/NN-<slug>.md— numbered chapters, 01 through 12. Read top-to-bottom as a book.LICENSE— MIT..gitignoreignores.claude/, so local agent config here is never committed.
Default branch: main. Remote: origin. No tags, no release process — readers consume from GitHub directly.
Chapter layout
Chapters are numbered so the TOC order in README.md matches filename order. Adding a new chapter means:
- Create
docs/NN-<slug>.mdwith the next number. - Add a row to the TOC table in
README.md(keep columns aligned:#, Chapter link, "What it covers"). - Cross-links between chapters use relative paths like
[ch. 11](docs/11-compressed-config.md)from the README, or[ch. 11](11-compressed-config.md)from insidedocs/.
Renumbering = renaming files and rewriting every inter-chapter link. Avoid unless necessary.
Writing conventions (this repo eats its own dog food)
The rules in docs/11-compressed-config.md govern this repo's own prose. When editing any .md here, follow them:
- Lead with the rule, not the reason. Fragments over sentences where natural.
- Tables for any ≥3-row structured data (see README TOC, ch. 11 cost table).
- Code blocks, shell commands, file paths, URLs, and version strings stay verbatim — compress the prose around them, not these.
- No meta-framing ("This section covers…"), no rhetoric ("this is critical"), no trailing summary paragraphs.
- One rule per line in rule lists; imperative voice.
- Size budgets per file type (from ch. 11):
CLAUDE.md<600 lines ·SKILL.md<80 · agent <50 · command <30. Chapters themselves aren't capped but aim for high info density — current chapters run ~100–400 lines.
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.
- 2mo ago First seen · 61 lines · 858 tokens per session scan A 7e8c2a3d0b37
claude-code-bible CLAUDE.md is an instructions file published in the GitHub repository sebyx07/claude-code-bible (6 stars, last pushed 3mo ago), licensed MIT. It adds 858 tokens to every session, about $0.0034 per session on Opus 5.5. 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.
claude-code-bible CLAUDE.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| claude-code-bible CLAUDE.mdsebyx07/claude-code-bible | Instructions file | 6 | 3mo ago | MIT | A | 858 | Claude Code |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | today | MIT | A | 7,461 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 5,516 | GitHub Copilot |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | today | MIT | A | 4,680 | Codex, OpenCode |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 275k | 3d ago | MIT | A | 4,313 | Codex, OpenCode |