ainit.dev

The "git init" for AI agents. Generate .aiignore files and AI guardrails for your coding tools.

Live at ainit.dev

Tools

.aiignore Generator

Generate context-exclusion files for AI coding tools. Pick your stack, get a combined ignore file. Like gitignore.io, but for AI context windows.

Supported formats: .aiignore, .cursorignore, .claudeignore, .codeiumignore, .geminiignore, .aiexclude

Guardrails Generator

Generate rules/instructions files for AI coding tools. Select technologies, toggle rule categories, get a combined rules file.

Supported formats: AGENTS.md, CLAUDE.md, .cursorrules, .windsurfrules, copilot-instructions.md, GEMINI.md

8 rule categories: Code Style, Security, Testing, Error Handling, Architecture, Dependencies, AI Behavior, Git Workflow

10 technologies: React, Python, TypeScript, Node.js, Next.js, Django, Go, Rust, Vue, Angular

curl API

All URLs use ? as the parameter separator (not &):

# .aiignore
curl -L ainit.dev/api/react,node,typescript

# Guardrails
curl -L ainit.dev/api/guardrails/react,python?o=cursor

# One-liner init (creates both files)
curl -sL "ainit.dev/api/init?t=react,node?g=react,python?o=cursor" | sh

# PowerShell
iex (iwr "ainit.dev/api/init?t=react,node?g=react,python?o=cursor?s=ps").Content

Init API parameters

Param	Description
t=	.aiignore templates (comma-separated)
g=	Guardrails technologies (comma-separated)
c=	Guardrails categories filter (optional)
o=	Output tool: agents, cursor, claude, windsurf, copilot, gemini
s=	Shell: sh (default), ps (PowerShell)

Architecture

• Frontend: Single index.html with client-side routing. Vanilla JS + Tailwind CSS. No framework.
• API: 3 Vercel edge functions (api/index.js, api/guardrails/index.js, api/init/index.js)
• Data: Static text/markdown templates in public/templates/ and public/guardrails/
• Build: Vite (code-splits aiignore.js and guardrails.js as lazy-loaded modules)

Development

bun install
bun run dev

Contributing

Templates and guardrails are plain text files — contributions welcome via PR:

• .aiignore templates: public/templates/{slug}.txt + add entry to public/templates/index.json
• Guardrails tech files: public/guardrails/tech/{slug}.md + add entry to public/guardrails/index.json

License

MIT