Feature Flag Manager
Ship features on your schedule, not all at once.
What changes when you build this
The gaps you're living with today,
and what this tool fixes.
Problems
- Flags are scattered across LaunchDarkly, environment variables, and code comments — nobody knows the canonical state
- Rolling out a feature to 10% of users requires a deploy or a ticket to the platform team
- Stale flags pile up after launches and nobody tracks cleanup, leaving dead code paths in production
- A PM asks "is this feature live in EU?" and three engineers give three different answers
- Incident response stalls because there is no fast way to kill a flag across all environments at once
Solutions
- One dashboard shows every flag, its status, and its rollout percentage across all environments
- Percentage rollouts are a slider change, not a deploy — engineers adjust exposure in seconds
- Stale flag detection surfaces flags unchanged for 30+ days so the team can schedule cleanup
- Environment-level views answer "what is live where?" without pinging anyone on Slack
- Kill-switch capability lets on-call disable a flag globally in one click during an incident
Mistakes to avoid
These are the failure patterns teams hit most often
when building this.
Stale flags never cleaned upFix: Flag any flag unchanged for 30+ days and assign a cleanup owner automatically.
Stale flags never cleaned up
Fix:Flag any flag unchanged for 30+ days and assign a cleanup owner automatically.
No environment separationFix: Store environment as a first-class column and filter every view by it — never show a flat global list.
No environment separation
Fix:Store environment as a first-class column and filter every view by it — never show a flat global list.
Rollout percentages with no audit trailFix: Log every toggle and percentage change with timestamp, user, and previous value.
Rollout percentages with no audit trail
Fix:Log every toggle and percentage change with timestamp, user, and previous value.
PM cannot check flag status independentlyFix: Build a read-only view scoped to PMs so they can answer 'is it live?' without asking engineering.
PM cannot check flag status independently
Fix:Build a read-only view scoped to PMs so they can answer 'is it live?' without asking engineering.
Kill-switch requires a deployFix: Expose a one-click disable action with appropriate RBAC so on-call can act in seconds.
Kill-switch requires a deploy
Fix:Expose a one-click disable action with appropriate RBAC so on-call can act in seconds.