A/B Testing with GrowthBook

Feature flags and experimentation using GrowthBook.

Overview

Clew Code integrates with GrowthBook for feature flag management and A/B testing. This allows gradual rollout of new features, targeted experiments, and configuration-driven behavior changes.

Architecture

GrowthBook is integrated via the @growthbook/growthbook SDK. Feature flags are evaluated at runtime and can control:

• UI component visibility
• Behavioral variations (e.g., different prompt templates)
• Provider selection defaults
• Beta feature access
• Experimental tool availability

Configuration

Set the GrowthBook API key in your environment:

export GROWTHBOOK_API_KEY=your-api-key

Or configure in .clew/settings.json:

{
  "growthbook": {
    "apiKey": "your-api-key",
    "attributes": {
      "environment": "development"
    }
  }
}

Current Feature Flags

Flag	Purpose
BRIDGE_MODE	Enable/disable Bridge v1 (CCR) functionality
tengu_ccr_bridge	GrowthBook-gated CCR bridge access