Design

Create OpenAPI specifications from scratch or import existing ones. Built on top of our Projects module, the designer gives you full control over your API design with visual editing, live preview, and integrated testing.

Start from Scratch

No import required. Create projects directly and build your API specification step by step.

Design & Test Together

Area mode lets you test endpoints while designing. No context switching between tools.

Industry Standards

Pure OpenAPI format. Create here, use anywhere. Import from anywhere, design here. No vendor lock-in.

Visual Designer

Design your API specifications visually without writing YAML or JSON. Switch seamlessly between the visual editor and code view with real-time synchronization. See your changes instantly in the split view.

Code & Preview

Write OpenAPI specs in YAML or JSON with full syntax highlighting and validation. Preview your API documentation in real-time as you type. Import existing specs from URLs, files, or clipboard.

Area Mode

Test your endpoints directly within the designer. Endpoints are organized by tags, giving you a clear overview of your entire API. Send requests, inspect responses, and validate your design - all in one place.

Contract Testing

Validate responses against your OpenAPI specification automatically. See exactly which responses match your defined schemas. Catch breaking changes before they reach production.

Your Specs, Your Freedom

We believe in industry standards, not proprietary formats. Your OpenAPI specifications are portable - create them here and use them anywhere, or bring your existing specs and continue where you left off. No collections, no lock-in, just pure OpenAPI.