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feature-flags-nextjs

Official

PostHog feature flags for Next.js apps

Software Engineering#react#nextjs#server-side#node#bootstrapping#feature-flags#flag-evaluation
AuthorPostHog
Version1.0.0
Installs0

System Documentation

What problem does it solve?

Enable Next.js applications to reliably manage and evaluate PostHog feature flags across client and server environments.

Core Features & Use Cases

  • Server-side flag evaluation and bootstrapping for Next.js pages and app router.
  • Guidance for initializing PostHog in Next.js (instrumentation-client.ts/js) and preventing UI flicker through pre-render flag values.
  • Framework-specific guidance for Next.js 15.3+ server components using posthog-node and server-side flag propagation to the client.

Quick Start

Install PostHog, configure environment, and ensure flag evaluation happens before rendering to avoid flicker.

Dependency Matrix

Required Modules

None required

Components

references

💻 Claude Code Installation

Recommended: Let Claude install automatically. Simply copy and paste the text below to Claude Code.

Please help me install this Skill:
Name: feature-flags-nextjs
Download link: https://github.com/PostHog/skills/archive/main.zip#feature-flags-nextjs

Please download this .zip file, extract it, and install it in the .claude/skills/ directory.
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