Borrowing it
Nothing to install: this file belongs to dgilford/ai-science-toolkit. 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/dgilford/ai-science-toolkit/main/AGENTS.mdgit clone --depth 1 https://github.com/dgilford/ai-science-toolkitWrote 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/dgilford/ai-science-toolkit/agents-md)<a href="https://agentmods.dev/instructions/dgilford/ai-science-toolkit/agents-md"><img src="https://agentmods.dev/badge/instructions/dgilford/ai-science-toolkit/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/dgilford/ai-science-toolkit/agents-md"><img src="https://agentmods.dev/badge/instructions/dgilford/ai-science-toolkit/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 | $0.00179 | $0.00179 |
| Opus 5.5 | $0.00072 | $0.00072 |
| Sonnet 5.5 | $0.00036 | $0.00036 |
| Haiku 4.5 | $0.00018 | $0.00018 |
Grade A, and why
ai-science-toolkit 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 1mo 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
AGENTS.md
This repository is shared between Codex and Claude Code.
Shared Guidance
Use CLAUDE.md as the source of truth for durable repository context, workflow notes, and skill-development conventions. Codex should read and follow the applicable project guidance there unless it conflicts with higher-priority Codex instructions.
Agent-Specific Notes
- Claude Code uses
CLAUDE.mdand.claude/. - Codex uses this
AGENTS.mdentry point and.codex/. - Keep shared repository knowledge in
CLAUDE.mdunless it is genuinely specific to one agent. - Keep local/session state in
.ai/when using the existing handoff workflow.
Editing Rule
For Claude skills, edit the repo copy under skills/, then sync with scripts/sync.sh. Do not edit installed copies directly.
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.
- 1mo ago First seen · 19 lines · 179 tokens per session scan A a9d069eae034
ai-science-toolkit AGENTS.md is an instructions file published in the GitHub repository dgilford/ai-science-toolkit (74 stars, last pushed today), licensed MIT. It adds 179 tokens to every session, about $0.0007 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 2026-08-30.
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