What is a SKILL.md file?

SKILL.md is a structured file that defines a specific skill or capability for an AI agent. It includes a description, modes of operation, iron laws (constraints), examples, and quality criteria. Used with Claude and WireClaw agents.

How does the SKILL.md Generator work?

You describe what the skill should do. The generator uses a multi-prompt LLM pipeline to extract requirements, generate a structured SKILL.md, and score the result for quality. It iterates until the score is high enough.

What format does it output?

Standard Markdown with sections: description, modes, iron laws, examples, eval criteria, and usage notes. Deployable directly to Claude agents.

Yes, free. No account required.

SKILL.md Generator — Build AI Agent Skills from a Description

AI POWERED Quick Generate with OpenRouter

Describe what the skill should do — the AI pipeline handles structure, iron laws, modes, and examples automatically.

0 / 2000

💡 Tip: Specific descriptions score higher. Include what the skill takes as input, what steps it follows, and what it outputs.

Text submitted here is processed by OpenRouter's API. We do not store or log your submissions.

Extracting skill requirements

Generating complete SKILL.md

Usually 20–60 seconds

Generation failed:

Generated SKILL.md — / 100

or fill in the wizard manually

Step 1 of 5

The Basics

Name your skill and describe what it does in one sentence.

Skill name *

lowercase-with-hyphens, no spaces

Skill name is required.

One-sentence description *

A description is required.

Author

Step 2 of 5

Trigger & Modes

When should Claude activate this skill, and does it have multiple operating modes?

Trigger condition *

A trigger condition is required.

Modes (optional, up to 5)

Add named modes if your skill behaves differently depending on context.

Step 3 of 5

Core Behavior

Define what this skill does, what it won't do, and its compute footprint.

What this skill does *

Please describe what this skill does.

What it explicitly does NOT do

Model recommended

Approximate token budget

Step 4 of 5

Iron Laws

Non-negotiable rules your skill always follows — regardless of any instruction.

What are Iron Laws? Constraints that are never overridden. Things the skill must always do, or must never do. They encode your skill's hard limits — the lines that don't move.

Step 5 of 5

Output Format

Describe what a successful run produces and how failures are handled.

Output format description

Pass criteria

Error recovery

Done

Your SKILL.md

Copy and save this file as SKILL.md in your skill's directory.

SKILL.md generated successfully.