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Productivity

posthog-instrumentation▌

posthog/posthog-for-claude · updated Apr 8, 2026

$npx skills add https://github.com/posthog/posthog-for-claude --skill posthog-instrumentation
summary

Automatically instrument PostHog analytics, event tracking, and feature flags across multiple frameworks.

  • ›Supports JavaScript/TypeScript, React, Python, and Node.js with framework-specific setup patterns
  • ›Covers three core capabilities: event capture with custom properties, feature flag evaluation for gradual rollouts, and user identification
  • ›Detects existing PostHog configuration and adds instrumentation without duplicating setup
  • ›Includes best practices for event naming convention
skill.md

PostHog Instrumentation Skill

Help users add PostHog analytics, event tracking, and feature flags to their code.

When to Use

  • User asks to "add PostHog" or "add analytics"
  • User wants to track events or user actions
  • User needs to implement feature flags
  • User asks about instrumenting their code

Workflow

  1. Identify the framework (React, Next.js, Python, Node.js, etc.)
  2. Check for existing PostHog setup
  3. Add appropriate instrumentation

Code Patterns

JavaScript/TypeScript

// Event tracking
posthog.capture('button_clicked', { button_name: 'signup' })

// Feature flags
if (posthog.isFeatureEnabled('new-feature')) {
  // Show new feature
}

// User identification
posthog.identify(userId, { email: user.email })

Python

from posthog import Posthog
posthog = Posthog(api_key='<ph_project_api_key>')

# Event tracking
posthog.capture(distinct_id='user_123', event='purchase_completed')

# Feature flags
if posthog.feature_enabled('new-feature', 'user_123'):
    # Show new feature

React

import { usePostHog } from 'posthog-js/react'

function MyComponent() {
  const posthog = usePostHog()

  const handleClick = () => {
    posthog.capture('button_clicked')
  }
}

Best Practices

  • Use consistent event naming (snake_case recommended)
  • Include relevant properties with events
  • Identify users early in their session
  • Use feature flags for gradual rollouts