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.
curl -O https://raw.githubusercontent.com/macanderson/stella/main/AGENTS.mdgit clone --depth 1 https://github.com/macanderson/stellaWrote 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.
[](https://agentmods.dev/instructions/macanderson/stella/agents-md)<a href="https://agentmods.dev/instructions/macanderson/stella/agents-md"><img src="https://agentmods.dev/badge/instructions/macanderson/stella/agents-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.
<a href="https://agentmods.dev/instructions/macanderson/stella/agents-md"><img src="https://agentmods.dev/badge/instructions/macanderson/stella/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.37380 | $0.37380 |
| Opus 5.5 | $0.14952 | $0.14952 |
| Sonnet 5.5 | $0.07476 | $0.07476 |
| Haiku 4.5 | $0.03738 | $0.03738 |
Grade C, and why
stella AGENTS.md scanned grade C with 1 finding 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.
Recursive force deletehighDestructive command
rm -rf with a variable or a broad path is one typo away from removing the wrong tree.
`rm -rf target/doc`. 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.
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 · -1 lines · +120 tokens per session de5a886cdf94
- 27d ago Changed · +43 tokens per session 4622607771cf
- 1mo ago Changed · +9 lines · +387 tokens per session 5c8971b3ac2b
- 1mo ago Changed · +6 lines · +22 tokens per session a3251e9a62ae
- 1mo ago Changed · +73 tokens per session e5b91891bd4b
- 1mo ago Changed · +41 lines · +967 tokens per session 0bc1c0cc87e1
- 1mo ago Changed · +25 lines · +417 tokens per session 94cea73558be
- 1mo ago Changed · +67 lines · +1,806 tokens per session 77404efc8630
- 1mo ago Changed · +22 lines · +427 tokens per session 77688beb4bc6
- 1mo ago First seen · 1,919 lines · 33,118 tokens per session scan C a60b79e00fb2
stella AGENTS.md is an instructions file published in the GitHub repository macanderson/stella (18 stars, last pushed today), licensed AGPL-3.0. It adds 37,380 tokens to every session, about $0.1495 per session on Opus 5.5. A static security scan graded it C with 1 finding (recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
stella AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| stella AGENTS.mdmacanderson/stella | Instructions file | 18 | today | AGPL-3.0 | C | 37,380 | Codex, OpenCode |
| 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 |