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integration-javascript_node

Instrument Node.js server-side applications with PostHog event capture and error tracking.

Updated Feb 24, 2026
Search Tags:#node.js#instrumentation#event tracking#posthog#user identification#error capture#server-side analytics
One-click install
npx skills add https://github.com/FrekiManagarm/dunlo --skill integration-javascript-node-frekimanagarm
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: integration-javascript_node
Source: https://github.com/FrekiManagarm/dunlo/tree/main/.agents/skills/integration-javascript_node
Command: npx skills add https://github.com/FrekiManagarm/dunlo --skill integration-javascript-node-frekimanagarm

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

It helps you instrument a server-side Node.js application with PostHog event tracking so product actions, user identity, and errors become measurable in one place.

Core Features & Use Cases

  • Server-side event tracking: Adds required posthog-node capture calls to route handlers so business-critical operations are recorded (especially where client-only tracking is insufficient).
  • User identification: Implements identify flows (and correlation using X-POSTHOG-DISTINCT-ID / X-POSTHOG-SESSION-ID when frontend + backend both exist) so backend events map to the correct person.
  • Error and exception instrumentation: Captures exceptions in central error handlers using captureException for reliable debugging and stability insights.
  • Event planning and consistency checks: Guides you through building an event plan, implementing it with minimal architectural changes, and validating the results.

Quick Start

Use the integration-javascript_node skill to set up PostHog for your Node.js server-side code by following the provided workflow files starting with basic-integration-1.0-begin.md.

Frequently Asked Questions about integration-javascript_node

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I add PostHog event tracking to a Node.js backend?▼

To add PostHog event tracking to a Node.js backend, use the posthog-node SDK to instrument server-side routes with capture calls for critical business operations like auth and webhooks. This ensures server-side actions are recorded.

How do I correlate backend PostHog events with frontend user sessions?▼

Correlate backend PostHog events with frontend sessions by passing X-POSTHOG-DISTINCT-ID and X-POSTHOG-SESSION-ID headers in requests. The backend uses these headers to map server-side events to the correct identified person.

Should I use posthog-js or posthog-node for server-side error capture?▼

You must use posthog-node for server-side error capture. Implement captureException in your central application error middleware to reliably record exceptions and debug stability issues.

When should I flush PostHog events immediately in Node.js?▼

Flush PostHog events immediately in Node.js for short-lived processes. Long-running servers should rely on batch behavior defaults, but short-lived scripts require immediate flushing settings to ensure events are sent before exit.

Can I use environment variables for PostHog secrets in Node.js?▼

Yes, you can and should use environment variables for PostHog secrets in Node.js. The integration requires environment variables to manage API keys securely without hardcoding them in your application code.

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