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Documentation Index

Fetch the complete documentation index at: https://kraken-sandbox.mintlify.app/llms.txt

Use this file to discover all available pages before exploring further.

The Payward Ramp REST API allows partners to integrate cryptocurrency on-ramp functionality into their applications.

Getting started

The Ramp API provides endpoints to:
  • Discover supported options: List available cryptocurrencies, fiat currencies, payment methods, and countries
  • Get quotes: Retrieve prospective quotes and transaction limits
  • Generate checkout URLs: Create hosted checkout experiences for your users

Base URL

https://nexus.kraken.com

Authentication

All Ramp API requests require authentication using API keys. Include the following headers in your requests:
  • API-Key: Your API key
  • API-Sign: Request signature generated with your private key

API versioning

The Ramp API uses date-based versioning. Specify the API version using the Payward-Version header:
Payward-Version: 2025-04-15

Explore the API

Use the navigation on the left to explore available endpoints organized by category.