Typed flag values
Every flag's value is validated against a JSON Schema. A flag can never return a shape your code doesn't expect.
Typesafe feature flags
Ship the change.
Know it's safe.
flaggable.dev is the feature flag platform with schemas built in — every flag typed, every value validated, every release under control.
- No credit card required
- Open SDKs
- Set up in minutes
import { useFlag } from "@flaggable/react";
export function Checkout() {
const isNewCheckout = useFlag("checkout-redesign");
return isNewCheckout ? <NewCheckout /> : <LegacyCheckout />;
}
Connected to production · 2ms eval
Why flaggable.dev
Typed where it counts.
Schema all the way down.
Typed targeting context
The properties you target on are schema-defined too. Conditions can't reference a field that doesn't exist — or one with the wrong type.
One schema, everywhere
A single JSON Schema contract drives the dashboard, the API, and the types your SDK generates. Nothing drifts out of sync.
AI-agent ready
Generate a ready-to-paste prompt for your coding agent and let it wire the flag into your codebase for you.
For developers
Your agent
wires it up.
Every flag comes with a generated prompt for your coding agent. Paste it into Claude Code, Cursor, or pi — the flag lands in your codebase, guarded and evaluated.
1
Create a flag in the dashboard.
2
Click "AI Setup Prompt" on the flag.
3
Paste it into your agent and ship.
# Wire the flag "checkout-redesign" into this repo.
1. Install @flaggable/react and add the
provider with the production SDK key.
2. Guard the new checkout behind
useFlag("checkout-redesign") in
app/checkout/page.tsx.
3. Keep the legacy component as the
fallback path. Do not delete it yet.A better release rhythm
Less guessing.
More shipping.
Make the call
Give every feature a deliberate on/off switch. Keep release control close to the people who know the work.
Watch the move
See rollout changes as they happen, with the environment and audience context attached to every update.
Keep momentum
When the signal is good, move forward. When it is not, roll back cleanly and know exactly what changed.
Your next release
Make it visible.
Free to start. Five minutes to your first flag.