LaunchDarkly is now available on the Vercel Marketplace, allowing you to quickly get started with feature flags without additional setup. You can:

• Sync flags into Global Config and evaluate them locally

• Target releases by user, attribute, or segment

• Run experiments with metrics, and roll back with a kill switch

• View and override flags from the Vercel Toolbar with the Flags Explorer

To get started, run vercel install launchdarkly, add the @flags-sdk/launchdarkly adapter, and declare a flag with the Flags SDK:

import { flag } from "flags/next";
import { ldAdapter, type LDContext } from "@flags-sdk/launchdarkly";
export const exampleFlag = flag<boolean, LDContext>({
  key: "example-flag",
  identify: () => ({ key: "user-123" }),
  adapter: ldAdapter.variation(),
});

Using a coding agent? Hand it this prompt:

Add LaunchDarkly from the Vercel Marketplace, or read the adapter docs.