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LaunchDarkly Now Available on Vercel Marketplace

·2026.08.11 09:00

Key point

LaunchDarkly has been integrated into the Vercel Marketplace, enabling feature flags to be used without separate configuration.

Details

LaunchDarkly has been added to the Vercel Marketplace, allowing teams to quickly adopt feature flags without separate configuration. Flags are synced via Global Config and evaluated locally, enabling release targeting by user, attribute, or segment.

Key features include:

  • Metric-based experimentation and rollbacks via kill switches
  • Inspecting and overriding flags in the Flags Explorer within the Vercel Toolbar
  • Server-side evaluation using the Vercel Flags SDK and the LaunchDarkly adapter

Users can run vercel install launchdarkly, install @flags-sdk/launchdarkly, and declare flags in flags.ts using ldAdapter.variation(). The Marketplace integration uses the LAUNCHDARKLY_CLIENT_SIDE_ID, LAUNCHDARKLY_PROJECT_SLUG, and EXPERIMENTATION_CONFIG environment variables, and user identification data can be configured via cookies or headers to be passed without network calls.

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