Borrowing it
Nothing to install: this file belongs to lestrrat-ai/claude-code-plugins. 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/lestrrat-ai/claude-code-plugins/main/AGENTS.mdgit clone --depth 1 https://github.com/lestrrat-ai/claude-code-pluginsWrote 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/lestrrat-ai/claude-code-plugins/agents-md)<a href="https://agentmods.dev/instructions/lestrrat-ai/claude-code-plugins/agents-md"><img src="https://agentmods.dev/badge/instructions/lestrrat-ai/claude-code-plugins/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/lestrrat-ai/claude-code-plugins/agents-md"><img src="https://agentmods.dev/badge/instructions/lestrrat-ai/claude-code-plugins/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 | $0.04022 | $0.04022 |
| Opus 5.5 | $0.01609 | $0.01609 |
| Sonnet 5.5 | $0.00804 | $0.00804 |
| Haiku 4.5 | $0.00402 | $0.00402 |
Grade A, and why
claude-code-plugins 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 2mo 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.
How it starts
The opening of the file, as written. The whole thing — 222 lines — stays where its author put it; the contents beside it link to each section on GitHub.
claude-code-plugins
This repo authors the agent instructions: plugins/** defines the skills that may be driving the
current session. The skills actually running in a session are the installed copies, not the working
tree. The consequences below are all non-obvious:
This is a SINGLE-USER, advisory workflow — calibrate severity to that
The gauntlet campaign, its lease, its heartbeat / adoption / refresh machinery, and these plugin skills serve ONE user driving their own runs. Do NOT chase airtight consistency or distributed-systems-grade correctness in the heartbeat / lease / adoption / refresh paths. A momentary inconsistency the single user creates is one the single user notices and resolves — an ACCEPTED RESIDUAL, not a gating defect. (The user's stated policy.)
- The lease is advisory and LOOSE by design. Its heartbeat-proof precondition gates the FIRST
acquire — taking a run; an owner's
refresh— including refresh of its own STALE lease — is not required to re-present proof. Findings of the form "a stale/matching refresh revives a run without re-proof", "two agents could briefly both drive one run", or "heartbeat/adoption/refresh could be made more consistent/airtight" are accepted residuals, NOT defects — the tool never promised otherwise. - Calibrate finding severity to what the artifact IS. A same-machine, single-user skill helper is not
a web server facing millions of hostile requests. A guard being incomplete against an input only the one
user could hand-edit into their own git-ignored state (e.g. a
1e99999float in their ownlease.json) is not, by itself, a defect — the user shooting their own foot is the user's call. Document the boundary; do not build machinery to defend against the single user. - This does NOT lower the bar on REAL guarantees. Fail-closed on malformed input, refusing a
non-owner's destructive op, and accurate agent-consumed docs still gate. The line is: "a real
guarantee is broken" gates; "consistency could be more airtight for the one user" is an accepted
residual. When a review keeps generating true-but-that-kind-of finding, it is over-reaching on scope,
not finding defects — bound the intent (
repair-pass.md, REPAIR-INTENT) rather than fixing them.
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.
- 2mo ago First seen · 222 lines · 4,022 tokens per session scan A 82883d9429f7
claude-code-plugins AGENTS.md is an instructions file published in the GitHub repository lestrrat-ai/claude-code-plugins (20 stars, last pushed 1mo ago), licensed MIT. It adds 4,022 tokens to every session, about $0.0161 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.
claude-code-plugins AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| claude-code-plugins AGENTS.mdlestrrat-ai/claude-code-plugins | Instructions file | 20 | 1mo ago | MIT | A | 4,022 | Codex, OpenCode |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 9,719 | GitHub Copilot |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 5,516 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | today | MIT | A | 7,461 | Codex, OpenCode |
| 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 |
| vscode model-prompts.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 2,022 | GitHub Copilot |