Borrowing it
Nothing to install: this file belongs to littlebearapps/contextdocs. 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/littlebearapps/contextdocs/main/CLAUDE.mdgit clone --depth 1 https://github.com/littlebearapps/contextdocsWrote 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/littlebearapps/contextdocs/claude-md)<a href="https://agentmods.dev/instructions/littlebearapps/contextdocs/claude-md"><img src="https://agentmods.dev/badge/instructions/littlebearapps/contextdocs/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/littlebearapps/contextdocs/claude-md"><img src="https://agentmods.dev/badge/instructions/littlebearapps/contextdocs/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 | $0.01152 | $0.01152 |
| Opus 5.5 | $0.00461 | $0.00461 |
| Sonnet 5.5 | $0.00230 | $0.00230 |
| Haiku 4.5 | $0.00115 | $0.00115 |
Grade A, and why
contextdocs 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 1mo 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 — 59 lines — stays where its author put it; the contents beside it link to each section on GitHub.
ContextDocs
Canonical description (use this in all listings and submissions):
Your AI agent maintains its own context files — a Claude Code plugin with an AGENTS-first model that covers Codex, Copilot, Cursor, Gemini, and 3 more tools.
Pure Markdown Claude Code plugin — no JavaScript, no Python, no build step, no runtime dependencies. Signal Gate filtering, Context Guard hooks, and 0-100 health scoring.
Commands
- Token budget test:
bash tests/check-token-budgets.sh - llms.txt validation:
bash tests/validate-llms-txt.sh - Spell check:
typos(config:_typos.toml, Australian English) - Frontmatter lint:
python3 tests/validate-frontmatter.py
Conventions
- Australian English: realise, colour, behaviour, licence (noun), license (verb)
- Conventional Commits:
feat:,fix:,docs:,chore:— release-please automates versioning - Line budgets: CLAUDE.md bridge <80, AGENTS.md <120, other bridge files <60
Architecture
- AGENTS-first generation:
AGENTS.mdis the canonical shared context for commands, conventions, constraints, and security notes - Thin bridges:
CLAUDE.md,.cursor/rules/agents.mdc, optional Copilot instructions,.clinerules/agents.md,.windsurfrules, andGEMINI.mdshould add only tool-specific behaviour - Modern formats: Modern Cursor uses
.cursor/rules/*.mdcwith frontmatter (description / globs / alwaysApply); modern Cline uses the.clinerules/directory with optionalpaths:per-file frontmatter. Legacy.cursorrulesand flat.clinerulesare preserved only when already present - Optional bridges:
.github/copilot-instructions.mdis optional — Copilot's coding agent loads AGENTS.md natively (since Aug 2025); only emit when adding tool-specific scoping - Compatibility bridges:
.windsurfrulesandGEMINI.mdremain generated for now for tool compatibility
When Modifying
- Add a skill: Create
.claude/skills/<name>/SKILL.md+commands/<name>.md, update README.md, AGENTS.md, llms.txt, and AGENTS-first generation guidance if shared output behaviour changed - Add a command: Create
commands/<name>.mdwith YAML frontmatter, update README.md, AGENTS.md, llms.txt - Add an agent: Create
.claude/agents/<name>.mdwith frontmatter, update AGENTS.md, llms.txt, context-guard SKILL.md - Change quality standards: Edit
.claude/rules/context-quality.md— propagates automatically - Change shared conventions: Update
AGENTS.mdfirst, then only the bridge docs whose tool-specific notes change - Bump version: Handled by release-please from conventional commit messages
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.
- 1mo ago First seen · 59 lines · 1,152 tokens per session scan A 0507be1a7c9d
contextdocs CLAUDE.md is an instructions file published in the GitHub repository littlebearapps/contextdocs (5 stars, last pushed 3mo ago), licensed MIT. It adds 1,152 tokens to every session, about $0.0046 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.
Other instructions, from other repositories
whichrules copilot-instructions.md
Instructions for z35068037/whichrules, a project described as: See exactly which instructions your AI coding agent receives - and where they conflict.
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).