# NowRamp ## Docs - [Error Handling](https://docs.nowramp.com/api/errors.md): API error codes and handling - [Onramp API](https://docs.nowramp.com/api/onramp.md): Multi-provider aggregation endpoints for comparing quotes and processing purchases across payment gateways. - [API Overview](https://docs.nowramp.com/api/overview.md): Introduction to the NowRamp Onramp API - [Sessions API](https://docs.nowramp.com/api/sessions.md): Create and manage secure checkout sessions for the Stripe-like integration model. - [Core Concepts](https://docs.nowramp.com/concepts.md): Understand the key concepts and terminology in NowRamp. - [FAQ](https://docs.nowramp.com/faq.md): Answers to frequently asked questions about NowRamp - [Glossary](https://docs.nowramp.com/glossary.md): Key terms and concepts explained in plain language - [Authentication](https://docs.nowramp.com/guides/authentication.md): How authentication works with the NowRamp Onramp API - [Partner Callback URLs](https://docs.nowramp.com/guides/callback-urls.md): Configure callback URLs to receive real-time transaction notifications - [Multi-Provider Quote Comparison](https://docs.nowramp.com/guides/multi-provider-quotes.md): Build a quote comparison UI that fetches and ranks quotes from multiple payment gateways. - [Partner Dashboard](https://docs.nowramp.com/guides/partner-dashboard.md): Manage your NowRamp integration from the self-service partner dashboard. - [Session-Based Checkout](https://docs.nowramp.com/guides/session-checkout.md): Create secure checkout sessions server-side and redirect users to complete payment — with our hosted checkout or your own custom UI. - [Webhooks](https://docs.nowramp.com/guides/webhooks.md): Receive real-time notifications for transaction events - [Introduction](https://docs.nowramp.com/index.md): Multi-provider crypto onramp aggregation. Compare quotes across payment gateways and surface the best rate for your users. - [Quickstart](https://docs.nowramp.com/quickstart.md): Integrate NowRamp in minutes using React components, the JavaScript SDK, or raw API calls. - [React Components](https://docs.nowramp.com/sdk/form.md): Drop-in React components for crypto checkout with @nowramp/form. - [JavaScript SDK](https://docs.nowramp.com/sdk/js-sdk.md): Programmatic access to the NowRamp Onramp API via @nowramp/sdk - [Use Cases](https://docs.nowramp.com/use-cases.md): How partners use NowRamp to power crypto transactions ## OpenAPI Specs - [openapi](https://docs.nowramp.com/api-reference/openapi.json)