PostHog logs for Next.js

This skill helps you add PostHog log ingestion to Next.js applications.

Reference files

• references/nextjs.md - Next.js logs installation - docs
• references/start-here.md - Getting started with logs - docs
• references/search.md - Search logs - docs
• references/best-practices.md - Logging best practices - docs
• references/troubleshooting.md - Logs troubleshooting - docs
• references/link-session-replay.md - Link session replay - docs
• references/debug-logs-mcp.md - Debug logs with mcp - docs

Consult the documentation for API details and framework-specific patterns.

Key principles

• Environment variables: Always use environment variables for PostHog keys and OpenTelemetry endpoints. Never hardcode them.
• Minimal changes: Add log export alongside existing logging. Don't replace or restructure existing logging code.
• OpenTelemetry: PostHog logs use the OpenTelemetry protocol. Configure an OTLP exporter pointed at PostHog's ingest endpoint.
• Structured logging: Prefer structured log formats with key-value properties over plain text messages.

Framework guidelines

• For Next.js 15.3+, initialize PostHog in instrumentation-client.ts for the simplest setup