API Reference
Flipswitch REST APIs
Flag Evaluation API
The Flag Evaluation API follows the OpenFeature Remote Evaluation Protocol (OFREP). Use it directly or through any OpenFeature SDK.
Authentication
All requests require an API key via the X-API-Key header:
API keys are scoped to a specific environment. Each environment automatically gets a key when created. Find your key in the dashboard under Project > Environments > select your environment.