atlas CLAUDE.md

atlas CLAUDE.md is an instructions file for coding agents from AtlasDevHQ/atlas. It costs 5,392 tokens per session, scanned A, original, AGPL-3.0.

Repository instructions for Claude Code in the AtlasDevHQ/atlas project. They describe required practices, error handling, types, style, and product rules.

In plain words
What is it for?
They help guide code changes, error handling, type usage, formatting, and checks for product requirements.
Why use it?
They give Claude Code the project-specific constraints needed to make changes that fit the existing code and preserve important behavior.

Instructions file

Install

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.

agentmods
npx agentmods add instructions/atlasdevhq/atlas/claude-md
Clone the repo
git clone --depth 1 https://github.com/AtlasDevHQ/atlas

Wrote 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.

agentmods badge for atlas CLAUDE.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/atlasdevhq/atlas/claude-md.svg)](https://agentmods.dev/instructions/atlasdevhq/atlas/claude-md)
Your own site
<a href="https://agentmods.dev/instructions/atlasdevhq/atlas/claude-md"><img src="https://agentmods.dev/badge/instructions/atlasdevhq/atlas/claude-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 5,392 This file is loaded in full into every session.
When invoked 5,392 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
Origin unknown No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.05392 $0.05392
Opus 5 $0.02696 $0.02696
Sonnet 5 $0.01078 $0.01078
Haiku 4.5 $0.00539 $0.00539

Measured today against content hash 22525e5a1cff, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

atlas 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 today.

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.

CLAUDE.md · 183 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Changes

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.

  1. today Changed · +4 lines · +110 tokens per session 22525e5a1cff
  2. yesterday Changed · +2 lines · +176 tokens per session afa3564b944b
  3. 5d ago First seen · 177 lines · 5,106 tokens per session scan A c5f50f61f50f

Subscribe to this mod's changes

atlas CLAUDE.md is an instructions file published in the GitHub repository AtlasDevHQ/atlas (1 stars, last pushed today), licensed AGPL-3.0. It adds 5,392 tokens to every session, about $0.0270 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 2026-08-31.

Related

Other instructions, from other repositories