Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add instructions/anam-org/metaxy/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.svg" alt="Measured on agentmods" 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 | $0.00744 | $0.00744 |
| Opus 5 | $0.00372 | $0.00372 |
| Sonnet 5 | $0.00149 | $0.00149 |
| Haiku 4.5 | $0.00074 | $0.00074 |
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 4d 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
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.
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.
Type safety: Code must pass just typecheck. Fix type errors before submitting.
Snapshot tests: If tests fail due to snapshot mismatches after intentional changes, update with uv run pytest --snapshot-update path/to/test.py.
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.
- 4d 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 (119 stars, last pushed 15d ago), licensed Apache-2.0. It adds 744 tokens to every session, about $0.0037 per session on Opus 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.
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