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description OpenFeature Remote Evaluation Protocol with flagd

Overview

EXPERIMENTAL

flagd supports the OpenFeature Remote Evaluation Protocol for flag evaluations. The service starts on port 8016 by default and this can be changed using startup flag --ofrep-port (or -r shothand flag).

Usage

Given flagd is running with flag configuration for myBoolFlag, you can evaluate the flag with OFREP API with following curl request,

curl -X POST 'http://localhost:8016/ofrep/v1/evaluate/flags/myBoolFlag'

To evaluate all flags currently configured at flagd, use OFREP bulk evaluation request,

curl -X POST 'http://localhost:8016/ofrep/v1/evaluate/flags'

See the cheat sheet for more OFREP examples including context-sensitive evaluation and selectors.

Monitoring

The OFREP endpoint is instrumented with OpenTelemetry HTTP and flag evaluation metrics. See the Monitoring reference for the full list of exposed metrics and their attributes.