CLAUDE.mdA

CLAUDE.md from arthur-ai/arthur-engine is a CLAUDE.md file: the standing instructions Claude Code reads in that repo.

Install it, pinned
mdr add arthur-ai/arthur-engine/CLAUDE.md@git:20261016.a8bceda

Pins git:20261016.a8bceda in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 14 of 14 checks passed
Kind
CLAUDE.md file
Repository
arthur-ai/arthur-engine
Path
CLAUDE.md
Versions recorded
7
Latest version
git:20261016.a8bceda, committed Oct 16, 2026
First version recorded
Apr 7, 2026
Size
3,881 bytes
Repository stars
93
License
MIT

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# CLAUDE.md

Arthur Engine is an AI/ML monitoring and governance platform. Each component has its own CLAUDE.md with commands and gotchas:

- [genai-engine/](genai-engine/CLAUDE.md) — FastAPI REST API for LLM evaluation and guardrailing (Python 3.12, PostgreSQL + pgVector)
- [genai-engine/ui/](genai-engine/ui/CLAUDE.md) — React 19 + TypeScript + Vite frontend
- [ml-engine/](ml-engine/CLAUDE.md) — job-based evaluation engine for ML model monitoring (Python 3.13)
- [arthur-observability-sdk/](arthur-observability-sdk/CLAUDE.md) — Python SDK for tracing and prompt management

## Workflow

- `dev` is the default branch: feature branches come from `dev` and PRs target it. `main` is production releases.
- Pre-commit hooks format code and run the unit test suites — a slow or failing commit is usually them, not git.
- GenAI Engine API changes require a changelog entry: `uv run generate_changelog` from `genai-engine/`.
- Repo skills cover environment setup and running the stack: `setup-genai-dev`, `start-genai-backend`, `start-genai-frontend`.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add arthur-ai/arthur-engine/CLAUDE.md@sha256:b1e8baab4b96f34c

The line at the top of this page pins the label git:20261016.a8bceda, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_qlhmwif3viuanxbx.svg)](https://markdownregistry.com/a/art_qlhmwif3viuanxbx)

5 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 7 versions of this file, between Apr 7, 2026 and Oct 16, 2026, about one every 32 days.

versioncommittedcommitsizeaudit
git:20261016.a8bceda latest2026-10-16 a8bceda 3,881 BA view · diff
git:20261014.20812682026-10-14 2081268 3,678 BA view · diff
git:20260918.3b279382026-09-18 3b27938 3,468 BA view · diff
git:20260818.0164a052026-08-18 0164a05 3,105 BA view · diff
git:20260731.d2c2e652026-07-31 d2c2e65 1,497 BA view · diff
git:20260522.e13b0ca2026-05-22 e13b0ca 15,697 BA view · diff
git:20260407.50741a32026-04-07 50741a3 14,955 BA view

Audit of the latest version

A  14 of 14 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Size between 200 bytes and 200 KB (3881 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

arthur-ai/arthur-engine · 93 stars · license MIT · pushed 2026-11-09 · branch dev

API

GET https://markdownregistry.com/api/v1/artifacts/art_qlhmwif3viuanxbx
GET https://markdownregistry.com/api/v1/resolve?ref=arthur-ai/arthur-engine/CLAUDE.md
GET https://markdownregistry.com/api/v1/blob/b1e8baab4b96f34cb33c04be5a7119a3aa0c66c94ff06a5cc12510929d3dc843

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: what a CLAUDE.md file is · keeping AGENTS.md and CLAUDE.md in sync · which agent file does what.

More from arthur-ai/arthur-engine

maintain-codeowners SKILL.md skill
arthur-ai/arthur-engine · .claude/skills/maintain-codeowners/SKILL.md · Audit or extend .github/CODEOWNERS, the human-review gate for sensitive paths. Use when asked whether a path should be…
git:20261014.87ec476 · audit A · 93 stars
setup-genai-dev SKILL.md skill
arthur-ai/arthur-engine · .claude/skills/setup-genai-dev/SKILL.md · Set up the GenAI Engine development environment. Use when starting work on the project for the first time, or when…
git:20260407.50741a3 · audit B · 93 stars
start-genai-backend SKILL.md skill
arthur-ai/arthur-engine · .claude/skills/start-genai-backend/SKILL.md · Start the GenAI Engine backend server and frontend UI. Use when you need to launch the API server and the frontend…
git:20260407.50741a3 · audit B · 93 stars
start-genai-frontend SKILL.md skill
arthur-ai/arthur-engine · .claude/skills/start-genai-frontend/SKILL.md · Start the GenAI Engine frontend UI dev server. Use when you need to launch the React app locally.
git:20260304.0624edd · audit A · 93 stars
generate-client SKILL.md skill
arthur-ai/arthur-engine · arthur-observability-sdk/.claude/skills/generate-client/SKILL.md · Regenerate the arthur_genai_client package from the GenAI Engine OpenAPI spec. Use when the GenAI Engine API has…
git:20260407.50741a3 · audit A · 93 stars
test-integration SKILL.md skill
arthur-ai/arthur-engine · arthur-observability-sdk/.claude/skills/test-integration/SKILL.md · Run the arthur-observability-sdk integration tests. These build the SDK wheel into a fresh venv and verify OTLP…
git:20260407.50741a3 · audit A · 93 stars
test-unit SKILL.md skill
arthur-ai/arthur-engine · arthur-observability-sdk/.claude/skills/test-unit/SKILL.md · Run the arthur-observability-sdk unit tests. Use when you want to verify SDK logic without building a wheel or spinning…
git:20260407.50741a3 · audit A · 93 stars
update-docs SKILL.md skill
arthur-ai/arthur-engine · arthur-observability-sdk/.claude/skills/update-docs/SKILL.md
git:20260317.53f05ea · audit C · 93 stars
CLAUDE.md@arthur-observability-sdk CLAUDE.md file
arthur-ai/arthur-engine · arthur-observability-sdk/CLAUDE.md
git:20260826.7bf361b · audit A · 93 stars
CLAUDE.md@genai-engine CLAUDE.md file
arthur-ai/arthur-engine · genai-engine/CLAUDE.md
git:20260731.d2c2e65 · audit A · 93 stars
CLAUDE.md@genai-engine/ui CLAUDE.md file
arthur-ai/arthur-engine · genai-engine/ui/CLAUDE.md
git:20260826.244ad05 · audit A · 93 stars
arthur-onboard-analyze SKILL.md skill
arthur-ai/arthur-engine · integrations/claude-code-skills/arthur-onboard/arthur-onboard-analyze/SKILL.md · Arthur onboarding sub-skill — Step 4: Analyze the target repository (language, framework, existing instrumentation)…
v1.0.0 · audit B · 93 stars

Every file in arthur-ai/arthur-engine

Other files named CLAUDE.md

CLAUDE.md CLAUDE.md file
affaan-m/ecc · CLAUDE.md
git:20261020.9471ef4 · audit A · 299,696 stars
CLAUDE.md CLAUDE.md file
firecrawl/firecrawl · CLAUDE.md
git:20261008.5a75dca · audit A · 199,595 stars
CLAUDE.md CLAUDE.md file
garrytan/gstack · CLAUDE.md
git:20261107.ef99eb5 · audit A · 140,694 stars
CLAUDE.md CLAUDE.md file
juliusbrussee/caveman · CLAUDE.md
git:20261106.af560e1 · audit B · 118,366 stars
CLAUDE.md CLAUDE.md file
addyosmani/agent-skills · CLAUDE.md
git:20260720.8fd2081 · audit A · 113,383 stars
CLAUDE.md CLAUDE.md file
nexu-io/open-design · CLAUDE.md
git:20260430.9b57c22 · audit B · 106,541 stars
CLAUDE.md CLAUDE.md file
pbakaus/impeccable · CLAUDE.md
git:20261105.71dfd50 · audit A · 106,186 stars
CLAUDE.md CLAUDE.md file
debpalash/voicestudio · CLAUDE.md
git:20261104.c2998f6 · audit A · 102,675 stars

Browse by kind, by grade A, or by owner.