writing-claude-md-files SKILL.md skillA
writing-claude-md-files from ed3dai/ed3d-plugins is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add ed3dai/ed3d-plugins/writing-claude-md-files@git:20260204.611bfd1Pins git:20260204.611bfd1 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- ed3dai/ed3d-plugins
- Path
plugins/ed3d-extending-claude/skills/writing-claude-md-files/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260204.611bfd1, committed Feb 4, 2026
- First version recorded
- Jan 15, 2026
- Size
- 8,191 bytes
- Repository stars
- 253
- License
- none declared
Use when creating or updating CLAUDE.md files for projects or subdirectories - covers top-level vs domain-level organization, capturing architectural intent and contracts, and mandatory freshness dates.
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
# Writing CLAUDE.md Files
**REQUIRED BACKGROUND:** Read ed3d-extending-claude:writing-claude-directives for foundational guidance on token efficiency, compliance techniques, and directive structure.
## Core Principle
CLAUDE.md files bridge Claude's statelessness. They preserve context so humans don't re-explain architectural intent every session.
**Key distinction:**
- **Top-level**: HOW to work in this codebase (commands, conventions)
- **Subdirectory**: WHY this piece exists and what it PROMISES (contracts, intent)
## File Hierarchy
Claude automatically reads CLAUDE.md files from current directory up to root:
```
project/
├── CLAUDE.md # Project-wide: tech stack, commands, conventions
└── src/
└── domains/
├── auth/
│ ├── CLAUDE.md # Auth domain: purpose, contracts, invariants
│ └── oauth2/
│ └── CLAUDE.md # OAuth2 subdomain (rare, only when needed)
└── billing/
└── CLAUDE.md # Billing domain: purpose, contracts, invariants
```
**Depth guideline:** Typically one level (domain). Occasionally two (subdomain like `auth/oauth2`). Rarely more.
## Top-Level CLAUDE.md
…Read the whole file at its exact version.
How to install
mdr add ed3dai/ed3d-plugins/writing-claude-md-files@sha256:e5b734fe4820714eThe line at the top of this page pins the label git:20260204.611bfd1, 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.
[](https://markdownregistry.com/a/art_xz3zbvz4bdcnmft4)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Jan 15, 2026 and Feb 4, 2026, about one every 20 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260204.611bfd1 latest | 2026-02-04 | 611bfd1 | 8,191 B | A | view · diff |
| git:20260115.cf17c55 | 2026-01-15 | cf17c55 | 8,169 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (8191 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
ed3dai/ed3d-plugins · 253 stars · license none declared · pushed 2026-09-06 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_xz3zbvz4bdcnmft4 GET https://markdownregistry.com/api/v1/resolve?ref=ed3dai/ed3d-plugins/writing-claude-md-files GET https://markdownregistry.com/api/v1/blob/e5b734fe4820714ec6d572efc810e123323bf0a7f46f3a48c1147b838dd4887e
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: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.