posthog-hello-world

name	posthog-hello-world
description	Create a minimal working PostHog example with event capture, identify, and feature flags. Use when starting a new PostHog integration, testing your setup, or learning basic posthog-js and posthog-node patterns. Trigger: "posthog hello world", "posthog example", "posthog quick start", "simple posthog code", "first posthog event".
allowed-tools	Read, Write, Edit
version	1.12.0
license	MIT
author	Jeremy Longshore <[e-mail]>
tags	["saas","posthog","api","testing"]
compatibility	Designed for Claude Code

PostHog Hello World

Overview

Minimal working examples demonstrating the three core PostHog operations: capturing events, identifying users, and evaluating feature flags. Covers both browser (posthog-js) and server (posthog-node) SDKs.

Prerequisites

• Completed posthog-install-auth setup
• Project API key (phc_...) configured
• posthog-js and/or posthog-node installed

Instructions

Step 1: Capture Your First Event (Node.js)

// hello-posthog.ts
import { PostHog } from 'posthog-node';

const posthog = new PostHog(process.env.NEXT_PUBLIC_POSTHOG_KEY!, {
  host: 'https://us.i.posthog.com',
});

async function main() {
  // 1. Capture a custom event
  posthog.capture({
    distinctId: 'user-123',
    event: 'hello_posthog',
    properties: {
      greeting: 'Hello from posthog-node!',
      source: 'hello-world-skill',
      timestamp: new Date().toISOString(),
    },
  });
  console.log('Event captured: hello_posthog');

  // 2. Identify a user with properties
  posthog.identify({
    : ,
    : {
      : ,
      : ,
      : ,
    },
  });
  .();

  
   flagValue =  posthog.(, );
  .();

  
   posthog.();
  .();
}

().(.);