# UserBoost Documentation

## Docs

- [Authentication](https://docs.userboo.st/api/authentication.md): How to authenticate with the UserBoost API using API keys for server-side integration
- [REST API Examples](https://docs.userboo.st/api/rest-examples.md): Direct HTTP API integration examples using cURL for any language or framework
- [Advanced Examples](https://docs.userboo.st/examples/index.md): Advanced integration patterns and real-world use cases for UserBoost
- [Activate. Engage. Retain.](https://docs.userboo.st/index.md): A strategic onboarding system that turns initial users into power users, driving meaningful product adoption.
- [Node.js SDK](https://docs.userboo.st/integrations/nodejs-sdk.md): Official UserBoost SDK for Node.js applications with TypeScript support
- [Backend APIs](https://docs.userboo.st/quick-start/backend-apis.md): Server-side event tracking for Node.js, Python, Go, PHP, Ruby and any language that can make HTTP requests
- [Quick Start](https://docs.userboo.st/quick-start/index.md): Get running in under 5 minutes. Choose your stack and start catching stuck users today.
- [Mobile Apps](https://docs.userboo.st/quick-start/mobile-apps.md): Native UserBoost integration for React Native and Flutter mobile applications
- [Web Apps](https://docs.userboo.st/quick-start/web-apps.md): Universal UserBoost integration for React, Next.js, Vue, Angular, and any JavaScript web application
- [Events API Reference](https://docs.userboo.st/tracking/events.md): Complete API reference for tracking user events with optimized payloads