Welcome to OASIS
Interactive OpenAPI 3.X Spec Explorer & High-Performance API Client
Dynamic OAS 3.X Engine
Parses JSON and YAML schemas seamlessly. Auto-builds rich form parameter controls and body schemas.
Direct vs Proxy Execution
Execute direct requests from browser or proxy via Golang backend to bypass CORS policies.
Global Headers & Preset Config
Inject custom authorization tokens, API keys, and custom headers across all requests automatically.
Realtime cURL & Code Formatter
Preview cURL commands instantly, modify payload dynamically, and inspect formatted JSON/XML responses.