Prefab

The product is a feature flag and dynamic configuration platform that manages the full lifecycle of flags — creation when code ships, gradual rollout with targeting, and retirement at 100% — to prevent flag sprawl when AI agents generate code. It sells to developers, operations and engineering teams in B2B software organizations shipping to production. It is positioned as a git-native platform where every flag change is a reviewable JSON commit evaluated locally in-process via SDKs, with prompts stored as versioned config and data owned via repo clone.

Key features

• Boolean and multivariate feature flags
• Percentage rollouts and targeting rules
• Kill switches and segments
• Type-safe dynamic config values
• Dynamic log level changes at runtime
• LLM prompts stored as versioned config
• Mustache prompts to type-safe render functions
• Local in-process sub-millisecond evaluation
• Git-native JSON file workspace repo
• Scriptable qfg CLI management
• Nine SDKs plus OpenFeature support