Borrowing it
Nothing to install: this file belongs to anam-org/metaxy. 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/anam-org/metaxy/main/CLAUDE.mdgit clone --depth 1 https://github.com/anam-org/metaxyWrote 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/anam-org/metaxy/claude-md)<a href="https://agentmods.dev/instructions/anam-org/metaxy/claude-md"><img src="https://agentmods.dev/badge/instructions/anam-org/metaxy/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/anam-org/metaxy/claude-md"><img src="https://agentmods.dev/badge/instructions/anam-org/metaxy/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 | $0.00795 | $0.00795 |
| Opus 5.5 | $0.00318 | $0.00318 |
| Sonnet 5.5 | $0.00159 | $0.00159 |
| Haiku 4.5 | $0.00080 | $0.00080 |
Grade A, and why
metaxy 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 2d 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 — 65 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
Agent Workflow
Start each task with the planner agent. Use python-dev to write code, python-test-engineer to write tests. Iterate until qa is satisfied.
Python Code Standards
Always invoke the /dignified-python skill before writing or reviewing Python code. This skill enforces LBYL exception handling, modern type syntax, pathlib usage, and other project standards.
Project Status
Active Development - Stable Public API
The project has users. APIs marked with @public cannot have breaking changes between minor releases. Non-public internals can be refactored freely. Deprecated APIs must be preserved until a minor release.
Communication
Use ASD-STE100 Simplified Technical English when you communicate with the user. Use short sentences, active voice, and consistent terms. Keep code identifiers, API names, and quoted source text exact. State the result and any limits clearly.
Project Overview
Metaxy is a feature metadata management system for multimodal ML pipelines. It tracks feature versions, dependencies, and data lineage with declarative definitions, automatic change detection, and smart migrations.
Commands
just sync # Install all dependencies
just ruff # Lint and format
just typecheck # Type check with ty
uv run pytest # Run tests (add -k "pattern" to filter)
Guardrails
Git commits: Do not create commits unless explicitly requested. When asked to commit, follow standard git workflow.
Tests:
- Always add or update tests when modifying features. Run
uv run pytest tests/path/to/test.pyto verify changes before considering work complete. - Never run the full test suite unless instructed. Only run relevant tests by filtering with
-k "pattern", specific files or specific testsuv run pytest tests/test_migrations.py::test_migration_generation - Use
uv run pytest --tachto automatically skip tests unaffected by your changes (uses tach's module dependency graph). Prefer this over running the full suite. - Always use fixtures to setup data and common values. Always request fixtures with appropriate type annotations.
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.
- 2d ago Changed · +4 lines · +51 tokens per session 665622f036b4
- 1mo ago First seen · 61 lines · 744 tokens per session scan A 6807737f0056
metaxy CLAUDE.md is an instructions file published in the GitHub repository anam-org/metaxy (125 stars, last pushed 2d ago), licensed Apache-2.0. It adds 795 tokens to every session, about $0.0032 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 2026-09-01.
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).
deepseek-harness AGENTS.md
AGENTS.md instructions for deepseek-ai/deepseek-harness, covering agents.md, pre-stable apis and released session data, repository layout, commands and host sandbox failures.