Feature Flag Console
Toggle flags, target segments, and see who'd actually get the feature.
IntermediateWeb appDev tool12–24hAI-buildable 4/5no setupworth shipping
A flag management UI with boolean and percentage rollouts plus segment targeting, and — the part that makes it real — an evaluation preview showing what a given user context would resolve to. Building the evaluator is the interesting half.
UI
Logic
Useful
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Core features · 7
- List flags with their current state
- Toggle a flag on or off globally
- Percentage rollouts with a consistent hashing rule
- Segment rules target users by attribute
- An evaluation preview resolves a sample user context against the rules
- Rule changes are shown as a diff before saving
- A change history records who changed what
The interesting part
- Consistent hashing so a user doesn't flip in and out of a rollout
- Rule precedence when several segments match one user
- Communicating the effect of a change before it is applied
Once it works
- Add scheduled flag changes
- Add flag dependencies
- Add a stale-flag report
Suggested stack
reacttypescripttailwind