skill-generator

skill-generator is a skill for Claude Code, Codex from MatrixAges/polywise. It costs 29 tokens per session (285 once invoked), scanned A, original, MIT.

Called when users need to create new OpenCode skills. Automatically creates directory structure and writes SKILL.md files conforming to specifications.

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/matrixages/polywise/skill-generator
Any agent
npx skills add MatrixAges/polywise --skill skill-generator
Clone the repo
git clone --depth 1 https://github.com/MatrixAges/polywise

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 skill-generator

README.md
[![agentmods](https://agentmods.dev/badge/skills/matrixages/polywise/skill-generator.svg)](https://agentmods.dev/skills/matrixages/polywise/skill-generator)
Your own site
<a href="https://agentmods.dev/skills/matrixages/polywise/skill-generator"><img src="https://agentmods.dev/badge/skills/matrixages/polywise/skill-generator.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 285 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 $0.00285
Opus 5 $0.00015 $0.00143
Sonnet 5 $0.00006 $0.00057
Haiku 4.5 $0.00003 $0.00028

Measured today against content hash 6fd475c9ba34, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

skill-generator 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 today.

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.

.opencode/skills/skill-generator/SKILL.md · 34 lines

What it actually says

Skill Generator

This skill is used to extend new specialized skills for AI in the project, ensuring new skill files meet the project's format requirements.

1. Skill Structure

Each new skill must be placed in the .opencode/skills/{skill-name}/ directory, and its main file must be named SKILL.md.

2. SKILL.md Format Requirements

YAML Frontmatter description must be included at the top of the file, containing the following two fields:

---
name: { skill-name }
description: { A piece of English or Chinese text describing when and what the skill does }
---

3. Generation Guide

  1. Create Directory: Create a new skill-named folder under .opencode/skills/.
  2. Write Content: Use Markdown syntax to detail the following under the skill:
    • Core architecture/principles
    • Naming and code style specifications
    • Specific execution best practices
    • Mandatory red lines (what absolutely cannot be done)
  3. Language Alignment: New skill content should尽量 use Chinese (to align with unified specifications), but the YAML header name must be English letters and hyphens.
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. today First seen · 34 lines · 29 tokens per session scan A 6fd475c9ba34

Subscribe to this mod's changes

skill-generator is a skill published in the GitHub repository MatrixAges/polywise (659 stars, last pushed 2mo ago), licensed MIT. It adds 29 tokens to every session and 285 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 2026-09-04.

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