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  3. /Relayer
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blockchain

Relayer

A service that facilitates transactions between parties without taking custody of funds.

Definition

A service that facilitates transactions between parties without taking custody of funds. In cross-chain bridges, relayers pass messages between chains. In gasless transactions, relayers submit transactions on behalf of users and get reimbursed by the protocol. They're the invisible infrastructure behind many smooth Web3 experiences.

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Related Terms

Bridge

A protocol that lets you move tokens between different blockchains.

Cross-Chain

The ability to move assets, data, or messages between different blockchain networks.

Gas

The fee paid to process transactions on Ethereum and similar blockchains.

ABI

Application Binary Interface.

Account Abstraction

A way to make crypto wallets behave more like normal apps by turning every account into a smart contract.

ERC-4337

The Ethereum standard for account abstraction without changing the core protocol.

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