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Relay is the universal onchain payment rail. One integration lets any business accept payment in any token, on any of 85+ chains, and settle in the asset it runs on. The blockchain complexity disappears. Since launching in 2024, applications and users have completed 186M transactions and $40B+ in volume through Relay across 85+ chains. Relay is two products on one stack:
  • The Relay Platform: the commercial layer you integrate through the API, SDK, deposit addresses, swaps, gasless execution, fee sponsorship, MEV protection, compliance screening, SLAs, and support.
  • The Relay Protocol: the open, permissionless crosschain settlement rail the Platform runs on. Anyone can build on it without commercial terms or permission.
Relay supports a diverse set of use cases:

Onboarding & Funding

Instant onboarding from any chain, in any token

Swaps

Same-chain and crosschain swaps at the best possible price

Call Execution

Execute transactions on any chain and pay with any token
To see Relay in action, try the Relay App. To start building, check out the Quickstart Guide.

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The Relay Stack

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Relay App

For anyone moving tokens across chains. The fastest way from any token to any token, built on the same infrastructure that powers enterprise customers. Try the App

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Relay API

For developers and businesses building onchain payments. One integration gives you access to 85+ chains:
  • Accept payment from any chain, in any token, with predictable fees
  • Swap at the best price through meta-aggregation across all major DEXs
  • Ship payments-grade UX with gasless execution, fee sponsorship, predictable rates, and SLAs
Whether you’re building wallets, exchange flows, merchant acceptance, or consumer apps, Relay makes crosschain payments fast, reliable, and invisible. View Documentation

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Relay Protocol

The open rail powering it all. Permissionless crosschain settlement, designed for low costs, rapid chain expansion, and payments-grade reliability. Learn More

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Payments-Grade

Payments-grade means meeting the reliability standard of modern payments, not simply being “crypto-native fast”:
  • Speed: sub-three-second settlement on supported routes
  • Success rate: high end-to-end success rates that keep payments moving
  • Price: predictable, competitive, and transparent
  • Coverage: one integration for every relevant chain and asset
  • Support: fast help when something goes wrong, backed by SLAs

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Trusted by Leading Teams

OpenSea powers crosschain mints through Relay so collectors never have to worry about which chain they’re on. Phantom collapses complex crosschain swaps into seamless flows. MetaMask, Coinbase, and 100+ other teams build on Relay across wallets, marketplaces, and payment platforms. Payroll, merchant acceptance, and exchange settlement all run on Relay today.

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Get Started

For users: Try the Relay App to swap any token across any chain instantly. For teams and developers: use the Quickstart Guide to add crosschain payments to your app. Contact us about enterprise features, including dedicated support and custom SLAs.