integration-nextjs-pages-router

To set up PostHog analytics in a Next.js Pages Router app, initialize the client via instrumentation-client.ts and use posthog-node for server-side API routes. You must configure NEXT_PUBLIC_POSTHOG_PROJECT_TOKEN and NEXT_PUBLIC_POSTHOG_HOST environment variables.

Yes, you can track server-side events from Next.js API routes using the posthog-node library. This enables end-to-end tracing and allows you to capture product usage and errors directly from your server functions.

To link PostHog events to a specific user after login in Next.js, call posthog.identify() during the login flow. This binds subsequent events to the user, linking their activity across different sessions and devices.

Yes, PostHog server-side tracking works with the Next.js Pages Router by using posthog-node within API routes. This approach supports cohesive product analytics and error tracking across both client and server environments.

The required environment variables for PostHog Next.js instrumentation are NEXT_PUBLIC_POSTHOG_PROJECT_TOKEN and NEXT_PUBLIC_POSTHOG_HOST. These must be set to initialize the client and connect to your PostHog project.