generator-agent

generator-agent is a skill for Claude Code, Codex from 7oSkaaa/polygon-problems-generator. It costs 29 tokens per session (794 once invoked), scanned A, original, MIT.

A tool for writing test generators and stress-testing scripts for competitive programming problems. It uses testlib.h, a C++ library for creating test data, and shell scripts for repeated testing.

In plain words
What is it for?
Creating Polygon-compatible C++ generators, generating valid and challenging test cases, and setting up scripts that compare solutions under stress.
Why use it?
It helps problem setters find incorrect solutions by producing edge cases, random cases, and adversarial inputs automatically. This reduces the need to design every test by hand.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/7oskaaa/polygon-problems-generator/generator-agent
Any agent
npx skills add 7oSkaaa/polygon-problems-generator --skill generator-agent
Clone the repo
git clone --depth 1 https://github.com/7oSkaaa/polygon-problems-generator

Made for: Claude Code, Codex.

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 generator-agent

README.md
[![agentmods](https://agentmods.dev/badge/skills/7oskaaa/polygon-problems-generator/generator-agent.svg)](https://agentmods.dev/skills/7oskaaa/polygon-problems-generator/generator-agent)
Your own site
<a href="https://agentmods.dev/skills/7oskaaa/polygon-problems-generator/generator-agent"><img src="https://agentmods.dev/badge/skills/7oskaaa/polygon-problems-generator/generator-agent.svg" alt="Measured on agentmods" height="20"></a>
Per session 29 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 794 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found 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 $0.00029 $0.00794
Opus 5 $0.00015 $0.00397
Sonnet 5 $0.00006 $0.00159
Haiku 4.5 $0.00003 $0.00079

Measured 4d ago against content hash 5a9bcaed501e, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

generator-agent 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 4d 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.

.agents/skills/generator-agent/SKILL.md · 52 lines

How it starts

The opening of the file, as written. The whole thing — 52 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Read .claude/shared.md first.

You are an expert competitive programming problem setter specialising in writing Polygon test generators using testlib.h.

Shared: Read .claude/shared.md first.

Apply the generator and stress guidance from tutorials/polygon-hints.md, especially edge/random/adversarial/max-IO coverage, answer-minimizing/maximizing tests when meaningful, alternating/block patterns, clean println output, and useful stress setup.

Key Rules

  • Always include #include "testlib.h" and registerGen(argc, argv, 1)
  • Accept CLI parameters via opt<int>() / opt<string>()
  • Use rnd.next() / rnd.partition() for randomness — never std::rand
  • Use println() for output — avoids trailing spaces
  • Build problem-aware generators that construct valid, interesting cases
  • Include a FreeMarker script example as a comment block at the end
  • The FreeMarker script executable name MUST exactly match the generator .cpp file base name — if the file is generator.cpp use generator, if it is my_gen.cpp use my_gen. Never use a generic name like gen
  • Add a comment line at the top of the script block that states the executable name, e.g. Executable name must match this file's base name: generator
  • Add -n/-k exact-value flags so the script can hit min and max for every variable
  • The FreeMarker script MUST include at least one test case where each variable is at its minimum value and at least one where it is at its maximum value — every boundary must be exercised
  • No duplicate tests. Polygon rejects the package if two tests in a testset are equal (Tests with indices X, Y in testset 'tests' are equal). Every script line must produce a distinct input, and none may match a sample.
    • Do not emit the same generator command twice (including equivalent commands, e.g. -type zeros together with -a 0 -b 0 if both print 0 0)
    • Pin all variables for boundary tests (-a 0 -b 100, not -a 0 -type random)
    • Never pin only some variables and leave the rest fully random on a small domain — that collides with exact edges
    • Do not repeat a sample input in the script
    • Each random line must have a unique extra seed token (e.g. generator -type random 1 > 10)
    • Prefer fully specified distinct tuples when the input space is tiny (Ace / few integers)
  • Compile with cpp17, no warnings

Read the full file on GitHub · 52 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. 4d ago First seen · 52 lines · 29 tokens per session scan A 5a9bcaed501e

Subscribe to this mod's changes

generator-agent is a skill published in the GitHub repository 7oSkaaa/polygon-problems-generator (21 stars, last pushed 4d ago), licensed MIT. It adds 29 tokens to every session and 794 once invoked, about $0.0001 per session on Opus 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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