PostHog joins the Vercel Marketplace

Source: Vercel Blog

PostHog is now available in the Vercel Marketplace as a feature‑flags, experimentation, and analytics provider.

Features

• Declare flags in code using the Flags SDK and the @flags-sdk/posthog adapter.
• Toggle features in real time for specific users or cohorts.
• Roll out changes gradually with percentage‑based rollouts.
• Run A/B tests to validate impact before a full release.

This integration helps teams building on Vercel ship with more confidence: test in production, reduce release risk, and make data‑driven decisions based on real user behavior, all within your existing Vercel workflows.

Getting Started

Create a flags.ts file with an identify function and a flag definition:

import { postHogAdapter } from '@flags-sdk/posthog';
import { flag, dedupe } from 'flags/next';
import type { Identify } from 'flags';

export const identify = dedupe(async () => ({
  distinctId: 'user_distinct_id' // replace with real user ID
})) satisfies Identify;

export const myFlag = flag({
  key: 'my-flag',
  adapter: postHogAdapter.isFeatureEnabled(),
  identify,
});

Check out the PostHog template to learn more about this integration.