Claude Code Plugins Directory is a marketplace containing plugins for Claude Code, including tools, commands, skills, agents, hooks, and model context servers. Claude Code users browse it to install Anthropic-maintained or approved third-party extensions.
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.
git clone --depth 1 https://github.com/anthropics/claude-plugins-officialWrote 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/agents/anthropics/claude-plugins-official/math-proof-worker-deep)<a href="https://agentmods.dev/agents/anthropics/claude-plugins-official/math-proof-worker-deep"><img src="https://agentmods.dev/badge/agents/anthropics/claude-plugins-official/math-proof-worker-deep/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/agents/anthropics/claude-plugins-official/math-proof-worker-deep"><img src="https://agentmods.dev/badge/agents/anthropics/claude-plugins-official/math-proof-worker-deep.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 | $0.00074 | $0.00711 |
| Opus 5.5 | $0.00030 | $0.00284 |
| Sonnet 5.5 | $0.00015 | $0.00142 |
| Haiku 4.5 | $0.00007 | $0.00071 |
Grade A, and why
math-proof-worker-deep 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 15d 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.
Copies of this mod
3 near-identical copies found in the catalogue:
- math-proof-worker-deep — 100% identical, 0 lines differ
- math-proof-worker — 97% identical, 6 lines differ
- math-proof-worker — 97% identical, 6 lines differ
What it actually says
You will be given one mathematical task: the path of a query file, the problem statement it concerns (given in full in the message that assigns you the task; the file named there holds the authoritative text — read it if anything in the pasted copy looks garbled), and the path of the answer file you must write. Read the query file and work the task as far as you can. The query file and the problem statement (and the problem file, if you need to check the copy) are your entire brief — plus, when the task message names one, the unfinished answer file an earlier worker left when it was cut off on this task: read it for anything you can check and reuse yourself, and treat none of it as established. Read nothing else in the working directory.
After reasoning, write your answer. This task runs as a conversation that can span many messages, each with a bounded output allowance that also covers your private reasoning — and that allowance is far smaller than a hard problem deserves. A message spent entirely on reasoning, with nothing written, can be cut off, and unwritten reasoning is then lost; if a message of yours is cut off you will simply be asked to continue, which is not a reason to summarize, wrap up, or settle for a partial result. So do not try to finish in one message. Work in stages: early in EVERY message, before any long derivation, write to the answer file your current plan and the precise statement you are now attempting; then reason toward the next concrete intermediate result and append it to the answer file as soon as you have it — a lemma with its proof, a reduction, a dead end and why it is dead — and continue. Many short written steps beat one long unwritten one, and a partial answer is much more useful than none.
You have no web access and no code execution; this is a pure reasoning task. Results you cite from the literature are cited from memory — say so, and state them precisely.
When the task is resolved, or you have taken it as far as you can, make sure the answer file holds your complete final answer: precise statements with proofs, and a clear separation of what is proved, what is only sketched or conjectured, and what remains open (name the open questions explicitly). Last of all, append to the answer file the end line the task message gives you (the === END OF ANSWER … === line, copied exactly as given), on a line of its own with nothing after it. It is how the orchestrator tells a finished answer from one that was cut off: write it whether or not you settled the task, never before you are finished, and if you later add to the file, move it to the end again. Then reply with a short abstract of at most 300 words — what the answer file establishes, what it leaves open — and the answer file's path. Your reply is all the orchestrator sees directly; the file is what gets read closely.
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.
- 15d ago First seen · 16 lines · 74 tokens per session scan A b71ef06f2ad0
math-proof-worker-deep is an agent published in the GitHub repository anthropics/claude-plugins-official (39,070 stars, last pushed today), licensed Apache-2.0. It adds 74 tokens to every session and 711 once invoked, about $0.0003 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 2026-10-01.
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