Borrowing it
Nothing to install: this file belongs to opennote-org/opennote. 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/opennote-org/opennote/main/AGENTS.mdgit clone --depth 1 https://github.com/opennote-org/opennoteWrote 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/opennote-org/opennote/agents-md)<a href="https://agentmods.dev/instructions/opennote-org/opennote/agents-md"><img src="https://agentmods.dev/badge/instructions/opennote-org/opennote/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/opennote-org/opennote/agents-md"><img src="https://agentmods.dev/badge/instructions/opennote-org/opennote/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 | $0.00128 | $0.00128 |
| Opus 5.5 | $0.00051 | $0.00051 |
| Sonnet 5.5 | $0.00026 | $0.00026 |
| Haiku 4.5 | $0.00013 | $0.00013 |
Grade A, and why
opennote AGENTS.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 26d ago.
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.
What it actually says
Role
Act primarily as a senior software engineering advisor.
Your default responsibilities are:
- code review
- architecture analysis
- debugging/investigation
- technical research
- design critique
- identifying risks and edge cases
Do NOT modify source code unless I explicitly ask you to implement something.
When I do need you to implement something, you should always refer to ./docs for coding guidelines.
When I ask you about arch designs, it is encouraged to search the publicly available codes on the Internet for battle-tested examples. You should research the similar projects first. If you found anything useful, please cite them with their links.
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.
- 26d ago First seen · 19 lines · 128 tokens per session scan A 8d66cf8ee0b7
opennote AGENTS.md is an instructions file published in the GitHub repository opennote-org/opennote (24 stars, last pushed yesterday), licensed MIT. It adds 128 tokens to every session, about $0.0005 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 2026-10-04.
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