Ship the code today.
Release it when you are ready.
Wrap a feature in a flag, roll it out to a slice of your visitors and widen it as the numbers hold up. If something breaks, switch it off from the dashboard, with no rollback and no redeploy.
Three steps from merged
to fully released.
Wrap
Put the new code behind a key.
Create a flag in the dashboard and check it in your code with a single call. The browser SDK already on your site reads it, and the Node.js SDK answers the same question on your server, so a feature can be gated end to end.
Roll out
Start small, then widen.
Set the share of visitors who get the feature, from a handful to everyone. Assignment is deterministic, so a visitor who saw the new version keeps seeing it as the percentage grows, in the browser and on the server alike.
Control
Turn it off without a release.
Pause a flag and visitors fall back to the old path as soon as the SDK picks up the change. The fix can wait for a calm morning instead of a midnight rollback.
What a flag
can do for you.
Why flags belong next
to your analytics.
Deploys stop being releases
Unfinished work can merge and ship dark. The team keeps one main branch, and the moment a feature goes live becomes a product decision instead of a deployment window.
A smaller blast radius
A bug that reaches five percent of visitors is an incident report. The same bug at a hundred percent is an outage. Gradual rollouts keep the first case from turning into the second.
See what the release actually did
The flag lives in the same place as your funnels, error logs and session replays. When conversions dip or errors climb after a rollout, the cause is one click away instead of in another tool.
Fast checks, no extra round trips
The Node.js SDK keeps flag rules in memory and evaluates them locally, so checking a flag inside a request handler costs nothing and keeps working if the network has a bad minute.
We protect your data.
Release your next feature on your terms.
Create your first flag in minutes with the script you already have. No credit card needed, and 5,000 sessions a month are free forever.