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.
npx agentmods add instructions/metamask/metamask-extension/agents-mdgit clone --depth 1 https://github.com/MetaMask/metamask-extensionWrote 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/metamask/metamask-extension/agents-md)<a href="https://agentmods.dev/instructions/metamask/metamask-extension/agents-md"><img src="https://agentmods.dev/badge/instructions/metamask/metamask-extension/agents-md.svg" alt="Measured on agentmods" 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 | $0.14674 | $0.14674 |
| Opus 5 | $0.07337 | $0.07337 |
| Sonnet 5 | $0.02935 | $0.02935 |
| Haiku 4.5 | $0.01467 | $0.01467 |
Grade C, and why
metamask-extension 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 6d 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.
Recursive force deletehighDestructive command
rm -rf with a variable or a broad path is one typo away from removing the wrong tree.
rm -rf node_modules/ && yarn The source is not reproduced here
A licence we could not identify
The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.
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.
- 6d ago First seen · 1,756 lines · 14,674 tokens per session scan C c4c6f3a2264e
metamask-extension AGENTS.md is an instructions file published in the GitHub repository MetaMask/metamask-extension (13,208 stars, last pushed today), with no licence file. It adds 14,674 tokens to every session, about $0.0734 per session on Opus 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 2026-08-30.
Other instructions, from other repositories
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vite-vue3-browser-extension-v3 copilot-instructions.md
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obol-stack CLAUDE.md
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claude-chrome-mcp AGENTS.md
AGENTS.md instructions for nonsleepr/claude-chrome-mcp, covering agents.md - developer guide, project overview, project rules, essential commands and code style (critical).
lineth-monorepo AGENTS.md
AGENTS.md instructions for LFDT-Lineth/lineth-monorepo, covering agents.md, documentation precedence, agent entry points, local agent workflows and discoverability index.