Summary
This adds PostHog feature flags to your Next.js app with a strong opinion on doing it right. It prioritizes server-side flag evaluation to avoid UI flicker, pushes you toward boolean flags by default, and includes clear guidance on when to use the React hooks versus the Node SDK. The skill knows about Next.js 15.3+ patterns like instrumentation-client.ts and will yell at you (correctly) if you're wrapping everything in PostHogProvider unnecessarily. It also connects to PostHog's MCP server if available, letting you create and manage flags directly from the editor instead of context-switching to the dashboard. The reference docs cover React hooks, Next.js specifics, and best practices.
Install
npx skills add https://github.com/posthog/skills --skill feature-flags-nextjs
