Modules

Feature Flags module

Rollout rules, cohort targeting, kill switches, and SDK-side local evaluation.

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Feature Flags module

The feature-flags module manages flag definitions, rollout percentages, cohort gates, kill switches, and transactional history.

Evaluation

SDK helpers evaluate locally using the same rule as the server:

  1. Killed flags return false.
  2. Disabled flags return false.
  3. Non-empty cohort dimensions must match the evaluation context.
  4. Percentage rollouts use SHA-256 of flagKey:userId, bucketed into 0-99.

API

EndpointReturns
GET /api/flags/statusModule health
GET /api/flags?project_id=...Flags for a project
GET /api/flags/{key}?project_id=...A single flag
GET /api/flags/stream?project_id=...Server-sent update stream

Product page: Feature Flags.