AI skill creator.
Turn a one-line idea into a complete SKILL.md your coding agent follows automatically: identity, design system, stack rules, examples, SEO and testing. Works with Cursor, Claude Code, Copilot, Windsurf and v0.
Your SKILL.md, generated in 5 answers.
Name the project, say what you are building, pick stack, style and agent, we compose a complete skill file your AI coding agent reads automatically.
Free · no sign-up · plain markdown you own
How to create custom AI instructions
- 1
Describe the outcome
One honest paragraph about the product is worth more than ten rules. The agent builds from your mission statement.
- 2
Lock the stack and design
Naming React, TypeScript and Tailwind, plus your palette, removes the biggest source of drift between sessions.
- 3
Say no explicitly
Every anti-pattern you list (“no `any`”, “no overflow at 390px”) prevents a whole class of mistakes before they happen.
- 4
Iterate like code
Treat the skill as versioned. When an agent does something wrong twice, add a rule; when a rule misfires, reword it.
What is an AI skill file?
An AI skill file is a markdown document that shapes how a coding agent behaves on your project. Instead of re-explaining your stack, conventions and quality bar in every prompt, you write them once, and the agent reads them automatically at the start of every session.
The best skill files read like an onboarding document for a brilliant but forgetful engineer: who they are, what they are building, and the rules they must never break. Vague files produce vague output; specific files produce work that looks like yours from the first commit.
Built by Payle, compare the coding agents and tools behind your stack with the AI tool comparison, price the stack with the AI pricing calculator, or check the best models in the AI model benchmark comparator.
More free AI tools
Every calculator is free and needs no sign-up: price, compare, track and optimize your whole AI stack with the same catalog and the same math.
Frequently asked questions
Cursor rules (.cursor/rules) and Claude Code skills (CLAUDE.md) are markdown instruction files that teach an AI coding agent your project conventions, stack, design system, do/don’t rules and testing requirements, so every generation follows them automatically. The skill creator writes that file for you from a short description of what you are building.
A skill file is a markdown document that tells an AI coding agent who it is, what it is building, and the rules it must follow: design system, stack, do/don’t lists, code examples, SEO and testing requirements. Tools like Cursor, Claude Code and Copilot read these files automatically, so every session starts with the same high-quality context.
It depends on the agent: Cursor reads .cursor/rules/, Claude Code reads CLAUDE.md or .claude/skills/, GitHub Copilot reads .github/copilot-instructions.md, and Windsurf reads .windsurf/rules.md. The tool shows the exact location for the agent you picked: save the file there and it applies automatically.
Describe what you want to build, pick your stack and design style, and choose your AI agent. The Skill Creator composes a complete skill file with identity, design tokens, rules, examples and testing requirements, then you save it where your agent expects it. Refine the rules over time as you learn what works.
Specific beats generic: name the stack and its conventions, give concrete examples, and say what NOT to do as clearly as what to do. Rules like “no `any`, use strict TypeScript” or “mobile-first, no overflow at 390px” change real output; vague phrases like “write clean code” do not.
Yes, free, no sign-up, and nothing is stored: the file is generated in your browser. Share the markdown or save it to a repo so your whole team uses the same skill. Building AI-powered apps? Payle finances the AI tools behind them, exclusive pricing and 0% APR over 3 months.
Can't find what you're looking for?
Your agents are productive. Your bills should be painless too.
Join 5,000+ builders using Payle to pay for AI over time, exclusive pricing on approved tools, one card, one credit line, and 0% APR over 3 months.
Browse ProductsFree tool · No sign-up needed · Skills generate entirely in your browser, nothing is stored or uploaded.