OpenFeature Providers

OpenFeature is an open specification that provides SDKs with a vendor-agnostic API for feature flagging. It helps developers integrate feature flags in a standardized way across different feature flag management platforms.

OpenFeature providers act as the bridge between an OpenFeature SDK and a feature flag service such as ConfigCat. When your application evaluates a feature flag through the OpenFeature API, the configured provider determines the flag value using the underlying feature flag system.

OpenFeature providers allow teams to adopt a standardized feature flag interface while managing flags with ConfigCat. To learn more, see the OpenFeature documentation.

ConfigCat OpenFeature Providers

ConfigCat offers OpenFeature providers for multiple platforms supported by OpenFeature SDKs. These providers let applications evaluate feature flags through the OpenFeature API while managing configuration in ConfigCat.

Supported platforms include:

.NET

Angular

Go

Java

JavaScript

Kotlin Multiplatform

NestJS

Node.js

PHP

Python

React

Ruby

Rust

Swift (iOS)

OpenFeature Remote Evaluation Protocol (OFREP)

The OpenFeature Remote Flag Evaluation Protocol (OFREP) defines a standard API for remote feature flag evaluation. It allows generic providers to connect to any feature flag system that supports the protocol.

ConfigCat supports OFREP through the ConfigCat Proxy, enabling OpenFeature-compatible clients to evaluate flags remotely. The API documentation for the OFREP implementation with usage examples is available here.