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Overview

Relay

The fastest and cheapest way to bridge & transact across chains

What is Relay?

Instant deposits and withdrawals using Relay

Instant Bridging

Execute cross-chain transactions via Relay

Cross-Chain Execution

Relay offers a suite of tools to enable to help developers build chain-abstracted UX

Chain Abstraction

Bridging

Swapping

Calling

How to Deposit or Withdraw on Solana from an EVM Chain

Solana Support

Testnet Support

Relay Protocol

Reservoir's production grade relaying service

The Reservoir Relayer

How to make your contract compatible with Relay

Contract Compatibility

Fees

Refunds

Trade Types

Learn how Relay handles surpluses or shortages.

Surplus & Shortage

MEV protection

Supported Chains

Relay currently supports multiple cross chain routes. The following section explains how to find if a particular routes and token pair are supported by Relay 

Supported Routes

Solver and Contract Addresses

Learn how Relay rewards developers who find & report vulnerabilities.

Bounties

Brand Assets

API Overview

Step Execution Overview

Handling Quote Errors

This API returns all possible chains available.

Get Chains

This API returns current status of intent.

Get Execution Status

This API returns all the cross-chain transactions.

Get Requests

This API returns the price of a token on a specific chain.

Get Token Price

This api returns currency metadata from a curated list

Get Currencies

This API returns an executable quote for swapping, bridging and calling

Get Quote

This API returns an executable quote for swapping tokens from multiple origin chains to a single destination chain

Swap Multi-Input

Notify the backend in order to fetch the traces and detect any internal deposits

Transactions Index

Notify the backend to index transfers, wraps and unwraps.

Transactions Single

Getting Started

createClient

An introduction to adapters and how to use them

Adapters

Typescript API Typings Typescript Types that facilitate API interaction

Typescript API Typings

Architecture

The Relay Vaults backend service is a GraphQL API that allows developers to query vault data.

Backend

Relay Vaults Backend

API Reference

SDK Reference

UI Kit

Relay Vaults

Try Relay

Support

How Relay uses ERC-4337 and EIP-7702 to enable smart wallet features like gas sponsorship, batching, and cross-chain execution

Smart Accounts in Relay

How to use ERC-4337 to execute cross-chain transactions

ERC-4337

How to use EIP-7702 to execute cross-chain transactions

EIP-7702

How to use just-in-time gas to execute cross-chain transactions

Just-In-Time Gas

Deep Linking

Learn how to use Relay with a deposit address for instant bridging.

Deposit Address

Pay for an action on one chain and perform one or more transactions on another chain.

Execute Call

Execute Bridge

Execute a swap on any currency pair on any supported chain.

Execute Swap

This API returns a lightweight quote without calldata or steps.

Get Price

This API returns solver capacity data & user data.

Get Config

Method to get the relayer's solver capacity.

getSolverCapacity

Get a quote for a crosschain relay (bridge, swap, call, etc)

getQuote

Execute a quote and get updates on its progress

execute

Installing and Configuring RelayKit Hooks

Fetch a quote and then execute it with this convenient hook

useQuote

useRelayChains

useRequests

useTokenList

Fetch the USD price for a token on a specific chain.

useTokenPrice

RelayKitProvider

SwapWidget

Theming

Troubleshooting

In this guide, we will learn how to successfully bridge funds from an origin to a vault.