CLAUDE.mdA

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

Install it, pinned

mdr add cromford-ai/cromford/CLAUDE.md@git:20261106.49a4c76

Pins git:20261106.49a4c76 in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 14 of 14 checks passed
Kind: CLAUDE.md file
Repository: cromford-ai/cromford
Path: CLAUDE.md
Versions recorded: 6
Latest version: git:20261106.49a4c76, committed Nov 6, 2026
First version recorded: Oct 14, 2026
Size: 12,052 bytes
Repository stars: 29
License: Apache-2.0

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

# cromford

The fleet build rules live in `rules/CLAUDE.md` — that file is rendered onto every
box as `~/.claude/CLAUDE.md` and is what a build in ANY repo reads. This file adds
only the thing the harness reads from a repo ROOT: the verification contract
below. Nothing here replaces or overrides `rules/CLAUDE.md`.

## Iron law: indexes and retention (BH-6730)

The fleet's iron laws live in `rules/topics/` (rendered to `rules/CLAUDE.md`). This one binds this repo's own D1 tables too (the harness-jobs lesson, #6727: tables of 25k-206k rows read 100-160M rows an hour, one correlated subquery read 1.29M rows per call, and D1 answered "overloaded" 875 times in 5 hours).

- Every new table ships with the indexes its queries need, in the same migration: name the index that serves each WHERE, JOIN, ORDER BY and GROUP BY.
- A test runs `EXPLAIN QUERY PLAN` (SQLite/D1) or `EXPLAIN` (Postgres) on seeded data at realistic volume and asserts the hot queries use an index (no full `SCAN` of a large table). A later index goes in a new additive migration (`CREATE INDEX IF NOT EXISTS`).
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add cromford-ai/cromford/CLAUDE.md@sha256:c20b626a74e273a6

The line at the top of this page pins the label git:20261106.49a4c76, 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](https://markdownregistry.com/badge/art_bc5pkqtb47bhfdqq.svg)](https://markdownregistry.com/a/art_bc5pkqtb47bhfdqq)

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

Versions

The registry has recorded 6 versions of this file, between Oct 14, 2026 and Nov 6, 2026, about one every 5 days.

version	committed	commit	size	audit
git:20261106.49a4c76 latest	2026-11-06	49a4c76	12,052 B	A	view · diff
git:20261020.cc810f8	2026-10-20	cc810f8	11,762 B	A	view · diff
git:20261020.0c8bc49	2026-10-20	0c8bc49	11,575 B	A	view · diff
git:20261016.9788f96	2026-10-16	9788f96	9,896 B	A	view · diff
git:20261014.b1c6974	2026-10-14	b1c6974	9,879 B	A	view · diff
git:20261014.4d80498	2026-10-14	4d80498	8,308 B	A	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 (12052 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

cromford-ai/cromford · 29 stars · license Apache-2.0 · pushed 2026-11-07 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_bc5pkqtb47bhfdqq
GET https://markdownregistry.com/api/v1/resolve?ref=cromford-ai/cromford/CLAUDE.md
GET https://markdownregistry.com/api/v1/blob/c20b626a74e273a618642c66fddca95175f11555e0663a7ceee9c93c4864076b

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.