Borrowing it
Nothing to install: this file belongs to combinatrix-ai/agenv. 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/combinatrix-ai/agenv/main/CLAUDE.mdgit clone --depth 1 https://github.com/combinatrix-ai/agenvWrote 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/combinatrix-ai/agenv/claude-md)<a href="https://agentmods.dev/instructions/combinatrix-ai/agenv/claude-md"><img src="https://agentmods.dev/badge/instructions/combinatrix-ai/agenv/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/combinatrix-ai/agenv/claude-md"><img src="https://agentmods.dev/badge/instructions/combinatrix-ai/agenv/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 | $0.00290 | $0.00290 |
| Opus 5.5 | $0.00116 | $0.00116 |
| Sonnet 5.5 | $0.00058 | $0.00058 |
| Haiku 4.5 | $0.00029 | $0.00029 |
Grade A, and why
agenv CLAUDE.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
CLAUDE.md
Commands
npm test— build + run all testsnpm run typecheck— type check only (no emit)npm run format— auto-format with biomenpm run lint:fix— auto-fix lint issuesnpm run check— full validation (format + lint + typecheck + test)
Do NOT modify
biome.json— fix your code, not the linter rulestsconfig.json— fix type errors, do not loosen strict settings.claude/settings.json— hook configuration is managed separately
Architecture
- Source:
src/(TypeScript, compiled todist/) - Tests:
test/*.test.cjs(node:test runner, CommonJS) - Config schema:
.agenv.schema.json - Docs:
docs/cli.md(CLI reference),docs/profiles.md(config model)
Conventions
- Use
createUserError()fromsrc/errors.tsfor user-facing errors - Use
isENOENT()fromsrc/errors.tsfor file-not-found checks - Profile names: lowercase,
^[a-z0-9][a-z0-9_-]*$ - All JSON writes must include trailing newline (see
writeJsoninsrc/state.ts)
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 · 30 lines · 290 tokens per session scan A 4981a8ad3790
agenv CLAUDE.md is an instructions file published in the GitHub repository combinatrix-ai/agenv (3 stars, last pushed 5d ago), licensed MIT. It adds 290 tokens to every session, about $0.0012 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
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).
vscode model-prompts.instructions.md
Model-specific prompt authoring and registry guidelines.