What Is Relay?

May 1, 2026

6 min read

Relay is intent-based crosschain payments infrastructure that enables applications and AI agents to move value across 85+ blockchains in a single step. Users specify what they want — an asset, a chain, an outcome — and Relay's solver handles the routing, execution, and settlement. No bridges, no gas management, no manual crosschain steps. Transactions complete in a median of 2.7 seconds with 99.9%+ reliability.

The Problem Relay Solves

Money is moving onchain. Stablecoins settled over $33 trillion in 2025. But the blockchains carrying that value are fragmented: dozens of networks, each with different assets, liquidity pools, and technical standards. A user holding USDC on Solana can't natively spend it on a protocol on Base. An AI agent managing assets across Ethereum, Arbitrum, and Tron faces a different set of routes and gas requirements on each chain.

This fragmentation isn't a temporary engineering problem. Multiple chains will continue to exist for the same reason multiple banks do. The question is what infrastructure makes fragmentation invisible at the application layer.

Relay is that infrastructure.

How Relay Works

Relay uses an intent-based execution model. Rather than bridging assets through intermediary contracts or requiring users to manually sequence transactions, Relay lets callers declare an intent — "deliver X asset to Y address on Z chain" — and routes execution through a competitive network of solvers.

The flow has four steps:

Quote. The caller states what they want onchain. Relay returns a quote with the expected outcome and total cost.

Order. The caller sends funds alongside the intent to Relay's escrow smart contract. Funds remain in escrow — non-custodial throughout.

Fill. A Relay solver uses its own capital to fulfill the order on the destination chain immediately. The user or agent receives the asset without waiting for the user's funds to cross chains.

Settle. Once execution is proven onchain, the solver claims the escrowed funds. The transaction is complete.

This model separates execution speed from crosschain settlement finality. The recipient gets their asset in seconds. The result is 2.7 second median crosschain execution.

What Relay Enables

Any asset, any chain. A user holding ETH on Ethereum can use it to buy an NFT on Base, deposit into a lending protocol on Arbitrum, or fund an account on Solana. Relay handles the asset conversion and crosschain routing as a single atomic operation.

Gas abstraction. Callers don't need to hold native gas tokens on destination chains. Relay's solver network covers destination gas as part of intent execution.

Non-custodial architecture. Funds move from user wallet to escrow contract to destination. No centralized intermediary takes custody at any point. Transactions complete or revert automatically.

Programmatic access. Relay exposes a developer API that applications and AI agents call directly. No browser, no wallet popup, no human approval loop per transaction.

Relay for AI Agents and Agentic Payments

Relay is increasingly used as the payment rail for AI agents — software that transacts autonomously on behalf of users, businesses, or other agents.

Traditional payment infrastructure was built for humans: it assumes identity verification, business-hours availability, and human confirmation at each step. Crypto rails solve this for agents — but a fragmented multichain environment reintroduces the complexity that agents need to avoid.

Relay removes that complexity. An agent makes a single API call describing the desired outcome, and the protocol routes execution across whatever chains are involved. The agent specifies intent. Relay executes.

This fits directly into the emerging patterns of agentic commerce: agents paying protocols for DeFi operations, agents settling with other agents for compute or data, and agents managing user funds within smart contract-enforced spending limits — all crosschain, all without human sign-off per transaction.

Scale and Partners

Relay has enabled over $20 billion in volume across more than 100 million transactions. It supports 85+ chains — including Solana, Tron, Bitcoin, and every major EVM network — and is the number one source of transactions on Base. Partners include OpenSea, Phantom, MetaMask, Fomo, Axiom, and Fun.xyz.

Who Builds with Relay

Wallets and neobanks integrate Relay so users can spend any holding from any chain without manually moving assets first.

Trading apps use Relay for instant crosschain execution — entering positions on any chain from a single asset.

Payment processors connect to Relay to reach users on any chain through a single integration.

New chains integrate Relay at launch to immediately access liquidity from every existing network.

AI agent frameworks use Relay as the execution layer for agentic payments — providing crosschain routing and settlement without the complexity of managing infrastructure per chain.

Frequently Asked Questions

Is Relay a bridge?

No. Relay uses intent-based execution rather than lock-and-mint bridging. There are no wrapped assets, no bridge custody contracts, and no reliance on third-party validator sets. The escrow model means funds revert automatically if execution fails.

Is Relay non-custodial?

Yes. User funds move from wallet to escrow smart contract and then to the destination. Relay never takes custody. The protocol coordinates — users remain in control throughout.

What chains does Relay support?

Relay supports 85+ chains including Ethereum, Base, Arbitrum, Optimism, Polygon, Solana, Tron, Bitcoin, Berachain, and every major EVM-compatible network.

How fast is Relay?

Relay's median crosschain execution time is 2.7 seconds. Most transactions complete faster than a same-chain confirmation on Ethereum mainnet.

Can AI agents use Relay?

Yes. Relay's API is designed for programmatic access. An agent calls the API, signs from its wallet, and the protocol executes — no human confirmation required. Gas abstraction means the agent doesn't need native token balances on each destination chain.

How does Relay make money?

Relay charges a small fee per transaction, shared between the protocol and the solvers who fulfill orders. Solvers compete on execution quality, keeping fees low and reliability high.