From posthog
Adds PostHog feature flags to gate new functionality for safe rollouts after feature implementation or PR reviews. Handles initial SDK setup if needed across multiple platforms.
npx claudepluginhub anthropics/claude-plugins-official --plugin posthogThis skill uses the workspace's default tool permissions.
Use this skill to add PostHog feature flags that gate new or changed functionality. Use it after implementing features or reviewing PRs to ensure safe rollouts with feature flag controls. If PostHog is not yet installed, this skill also covers initial SDK setup. Supports any platform or language.
references/adding-feature-flag-code.mdreferences/android.mdreferences/api.mdreferences/best-practices.mdreferences/dotnet.mdreferences/elixir.mdreferences/flutter.mdreferences/go.mdreferences/ios.mdreferences/java.mdreferences/next-js.mdreferences/nodejs.mdreferences/php.mdreferences/python.mdreferences/react-native.mdreferences/react.mdreferences/ruby.mdreferences/rust.mdreferences/web.mdImplements feature flags for gradual rollouts, A/B testing, canary deployments, and kill switches. Provides TypeScript services, React hooks, analytics integration, LaunchDarkly-style SDK, and admin UI.
Integrates OpenFeature SDK for vendor-agnostic feature flags with standardized API, covering Node.js installation, evaluation, providers, and hooks for A/B testing and canary releases.
Guides feature flag design, gradual rollouts, A/B testing, kill switches. Recommends LaunchDarkly, Unleash, Flagsmith based on flag count and needs for safer deployments.
Share bugs, ideas, or general feedback.
Use this skill to add PostHog feature flags that gate new or changed functionality. Use it after implementing features or reviewing PRs to ensure safe rollouts with feature flag controls. If PostHog is not yet installed, this skill also covers initial SDK setup. Supports any platform or language.
Supported platforms: React, Next.js, React Native, Web (JavaScript), Node.js, Python, PHP, Ruby, Go, Java, Rust, .NET, Elixir, Android, iOS, Flutter, and the REST API.
Follow these steps IN ORDER:
STEP 1: Analyze the codebase and detect the platform.
STEP 2: Research instrumentation. (Skip if PostHog is already set up.) 2.1. Find the reference file below that matches the detected platform — it is the source of truth for SDK initialization, flag evaluation methods, and framework-specific patterns. Read it now. 2.2. If no reference matches, fall back to your general knowledge and web search. Use posthog.com/docs as the primary search source.
STEP 3: Create or find the feature flag.
STEP 4: Plan release conditions.
STEP 5: Instrument the feature.
STEP 6: Set up environment variables.
.env, .env.local, or framework-specific env files). If valid values already exist, skip this step.projects-get tool to retrieve the project's api_token. If multiple projects are returned, ask the user which project to use. If the MCP server is not connected or not authenticated, ask the user for their PostHog project API key instead.https://us.i.posthog.com for US Cloud or https://eu.i.posthog.com for EU Cloud.references/react.md - React feature flags installation - docsreferences/react-native.md - React native feature flags installation - docsreferences/web.md - Web feature flags installation - docsreferences/nodejs.md - Node.js feature flags installation - docsreferences/python.md - Python feature flags installation - docsreferences/php.md - Php feature flags installation - docsreferences/ruby.md - Ruby feature flags installation - docsreferences/go.md - Go feature flags installation - docsreferences/java.md - Java feature flags installation - docsreferences/rust.md - Rust feature flags installation - docsreferences/dotnet.md - .net feature flags installation - docsreferences/elixir.md - Elixir feature flags installation - docsreferences/android.md - Android feature flags installation - docsreferences/ios.md - Ios feature flags installation - docsreferences/flutter.md - Flutter feature flags installation - docsreferences/api.md - API feature flags installation - docsreferences/next-js.md - Next.js - docsreferences/adding-feature-flag-code.md - Adding feature flag code - docsreferences/best-practices.md - Best practices for production-ready flags - docsEach platform reference contains SDK-specific installation, flag evaluation, and code examples. Find the one matching the user's stack. If unlisted, use the API reference as a fallback.