math-olympiad

math-olympiad is a skill for Claude Code from nota-america/forgecat-agent-profiles. It costs 163 tokens per session (4,530 once invoked), scanned A, a copy of math-olympiad, Apache-2.0.

A competition-math solver for problems from contests such as the IMO, Putnam, USAMO, and AIME, with separate checks for possible errors.

In plain words
What is it for?
Solving olympiad proofs, finding AIME answers, checking an existing competition proof, and searching for counterexamples.
Why use it?
It helps reduce mistakes in difficult proofs and numeric solutions by testing reasoning and looking for counterexamples.

Skill for Claude Code

Written for Claude Code: installed under .claude/. Also seen: mentions subagents.

Good fit Solving olympiad proofs, finding AIME answers, checking an existing competition proof, and searching for counterexamples.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/nota-america/forgecat-agent-profiles/math-olympiad
Install

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.

Any agent
npx skills add nota-america/forgecat-agent-profiles --skill math-olympiad
Clone the repo
git clone --depth 1 https://github.com/nota-america/forgecat-agent-profiles

Made for: Claude Code.

Wrote 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.

agentmods badge for math-olympiad

README.md
[![agentmods](https://agentmods.dev/badge/skills/nota-america/forgecat-agent-profiles/math-olympiad/github.svg)](https://agentmods.dev/skills/nota-america/forgecat-agent-profiles/math-olympiad)
Your own site
<a href="https://agentmods.dev/skills/nota-america/forgecat-agent-profiles/math-olympiad"><img src="https://agentmods.dev/badge/skills/nota-america/forgecat-agent-profiles/math-olympiad/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.

agentmods 80×15 button for math-olympiad

Your own site · 80×15
<a href="https://agentmods.dev/skills/nota-america/forgecat-agent-profiles/math-olympiad"><img src="https://agentmods.dev/badge/skills/nota-america/forgecat-agent-profiles/math-olympiad.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 163 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,530 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 100% copy Near-identical to another mod in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00163 $0.04530
Opus 5 $0.00081 $0.02265
Sonnet 5 $0.00033 $0.00906
Haiku 4.5 $0.00016 $0.00453

Measured 7d ago against content hash 5878140f3164, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

math-olympiad 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 7d ago.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/check_latex.sh, scripts/compile_pdf.sh), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Origin

This is a copy

100% identical to math-olympiad — 21 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

profiles/anthropics/claude-plugins-official/anthropics_claude-plugins-official_math-olympiad/for-claude/.claude/skills/math-olympiad/SKILL.md · 411 lines

How it starts

The opening of the file, as written. The whole thing — 411 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Math Olympiad Solver

The five things that change outcomes

  1. Strip thinking before verifying — a verifier that sees the reasoning is biased toward agreement. Fresh context, cleaned proof only.
  2. "Does this prove RH?" — if your theorem's specialization to ζ is a famous open problem, you have a gap. Most reliable red flag.
  3. Short proof → extract the general lemma — try 2×2 counterexamples. If general form is false, find what's special about THIS instance.
  4. Same gap twice → step back — the case split may be obscuring a unified argument. Three lines sometimes does what twelve pages couldn't.
  5. Say "no confident solution" — wrong-and-confident is worse than honest abstain.

Tool policy: Solvers and verifiers use THINKING ONLY in the tight-budget workflow. Competition math is reasoning. Computation is for deep mode (§6c), and even then bounded — a recurrence that's doubly-exponential can't be computed past n~30, work mod 2^m instead.


When to use which approach

Problem Approach Verification
AIME numeric answer Best-of-N → majority vote Answer check only
Olympiad proof (IMO/Putnam/USAMO) Full workflow below 5-pass adversarial
"Is this proof correct?" Skip to verification (step 4) Adversarial + spec-gaming
Full problem set (e.g. all 6 from a competition) Sequential: one full workflow per problem, collect results, compile single PDF Per-problem adversarial

Read the full file on GitHub · 411 lines

Changes

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.

  1. 7d ago First seen · 411 lines · 163 tokens per session scan A 5878140f3164

Subscribe to this mod's changes

math-olympiad is a skill published in the GitHub repository nota-america/forgecat-agent-profiles (66 stars, last pushed today), licensed Apache-2.0. It adds 163 tokens to every session and 4,530 once invoked, about $0.0008 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to math-olympiad, differing in 21 lines, and is treated as a copy.

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