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XO SwapGetting Started

XO Swap API

Build multichain swaps with a focused API for discovery, pricing, and order execution.

Four-step API lifecycle: discover assets, price the swap, execute the order, and track its status
Both API versions cover the same lifecycle. The version you choose changes how pricing, routing, and transaction creation are handled.

Authorization Required: All API requests require specific headers. See the Authorization guide for details.

Choose Your API

V3 APIStable

Flexible integration flows with production-ready endpoints.

Explore V3 →V4 APIBeta

One streamlined API that automatically finds the best swap route.

Explore V4 →
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