What is stella CLAUDE.md?

A set of instructions for Claude Code sessions in the Stella project, covering how to use and maintain its CLAUDE.md guidance file.

Use it when working on the Stella repository and needing its project-specific Claude Code instructions.

The available details are too limited to say more about the project or the specific rules it contains.

How macanderson/stella configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to macanderson/stella. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/macanderson/stella/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/macanderson/stella

Made for: Claude Code.

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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/macanderson/stella/claude-md/github.svg)](https://agentmods.dev/instructions/macanderson/stella/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/macanderson/stella/claude-md"><img src="https://agentmods.dev/badge/instructions/macanderson/stella/claude-md/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/macanderson/stella/claude-md"><img src="https://agentmods.dev/badge/instructions/macanderson/stella/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 8,666 This file is loaded in full into every session.

When invoked 8,666 The same file — it is already loaded in full.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

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.

Model	Per session	Once invoked
Fable 5.1	$0.08666	$0.08666
Opus 5.5	$0.03466	$0.03466
Sonnet 5.5	$0.01733	$0.01733
Haiku 4.5	$0.00867	$0.00867

Measured today against content hash 870f81b27f65, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

stella 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 · 435 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.

today Changed · -3 lines · +106 tokens per session 870f81b27f65
26d ago Changed · +4 lines · +90 tokens per session a44cb70d72e4
1mo ago Changed · +1 lines · +154 tokens per session 61bf55b569a7
1mo ago Changed · +2 tokens per session b901609e85c5
1mo ago Changed · +12 lines · +295 tokens per session f16e72cd88bb
1mo ago Changed · +14 lines · +449 tokens per session 8bc824148bc5
1mo ago Changed · +58 lines · +1,758 tokens per session b18b8095aeec
1mo ago Changed · +9 lines · +138 tokens per session f1a429ea2861
1mo ago Changed · +2 lines · +45 tokens per session c98f1252cc14
2mo ago First seen · 338 lines · 5,629 tokens per session scan A 22d59eb78017

Subscribe to this mod's changes

stella CLAUDE.md is an instructions file published in the GitHub repository macanderson/stella (18 stars, last pushed today), licensed AGPL-3.0. It adds 8,666 tokens to every session, about $0.0347 per session on Opus 5.5. 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.

agent-coding agent-memory agent-swarm agent-teams ai-coding evals

stella CLAUDE.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
stella CLAUDE.mdmacanderson/stella	Instructions file	18	today	AGPL-3.0	A	8,666	Claude Code
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	today	MIT	A	7,461	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	5,516	GitHub Copilot
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	today	MIT	A	4,680	Codex, OpenCode
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	275k	3d ago	MIT	A	4,313	Codex, OpenCode

stella: Instructions file for Claude Code