tools-only PostHog Install & Auth
Overview
Set up PostHog SDK/CLI and configure authentication credentials.
Prerequisites
- Node.js 18+ or Python 3.10+
- Package manager (npm, pnpm, or pip)
- PostHog account with API access
- API key from PostHog dashboard
Instructions
Step 1: Install SDK
# Node.js
npm install @posthog/sdk
# Python
pip install posthog
Step 2: Configure Authentication
# Set environment variable
export POSTHOG_API_KEY="your-api-key"
# Or create .env file
echo 'POSTHOG_API_KEY=your-api-key' >> .env
Step 3: Verify Connection
// Test connection code here
Output
- Installed SDK package in node_modules or site-packages
- Environment variable or .env file with API key
- Successful connection verification output
Error Handling
| Error | Cause | Solution |
|---|---|---|
| Invalid API Key | Incorrect or expired key | Verify key in PostHog dashboard |
| Rate Limited | Exceeded quota | Check quota at https://docs.posthog.com |
| Network Error | Firewall blocking | Ensure outbound HTTPS allowed |
| Module Not Found | Installation failed | Run npm install or pip install again |
Examples
TypeScript Setup
import { PostHogClient } from '@posthog/sdk';
const client = new PostHogClient({
apiKey: process.env.POSTHOG_API_KEY,
});
Python Setup
from posthog import PostHogClient
client = PostHogClient(
api_key=os.environ.get('POSTHOG_API_KEY')
)
Resources
Next Steps
After successful auth, proceed to posthog-hello-world for your first API call.