Feature Flags

10K evals free

Control feature rollouts

Self-Hosted

Control feature releases with precision. Percentage rollouts, user targeting based on attributes, environment overrides, and real-time flag updates. Perfect for gradual rollouts and A/B testing.

Overview
Pricing
Usage
Docs
Examples

Quick Start

1

Create feature flags in dashboard

2

Set rollout percentage or targeting rules

3

Check flags with sylphx.flags.isEnabled()

4

Monitor flag usage in analytics

Documentation

Key Concepts

Getting Started

Follow the quick start guide to set up this service.

Configuration

Configure the service using environment variables or the dashboard.

API Keys

Use your API key to authenticate requests to this service.

SDK Methods

MethodDescription
sylphx.flags.isEnabled()Check if a flag is enabled
sylphx.flags.getValue()Get flag value with variants
useFlag()React hook for feature flags

Need more details?

Check out our complete documentation for in-depth guides and tutorials.

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