This page explains the role of the facilitator in the x402 protocol.
The facilitator is an optional but recommended service that simplifies the process of verifying and settling payments between clients (buyers) and servers (sellers).
The facilitator is a service that:
By using a facilitator, servers do not need to maintain direct blockchain connectivity or implement payment verification logic themselves. This reduces operational complexity and ensures accurate, real-time validation of transactions.
The facilitator does not hold funds or act as a custodian - it performs verification and execution of onchain transactions based on signed payloads provided by clients.
Using a facilitator provides:
While it is possible to implement verification and settlement locally, using a facilitator accelerates adoption and ensures correct protocol behavior.
Coinbase Developer Platform (CDP) operates a hosted facilitator service.
CDP’s x402 facilitator offers:
To get started with CDP’s facilitator, see the quickstart for sellers.
Using CDP’s facilitator allows sellers to quickly integrate payments without managing blockchain infrastructure, while providing a predictable and low-cost experience for buyers.
For a list of available facilitators and the networks they support, see Network Support.
To understand how facilitators fit into the complete x402 payment flow, see How x402 Works.
The facilitator acts as an independent verification and settlement layer within the x402 protocol. It helps servers confirm payments and submit transactions onchain without requiring direct blockchain infrastructure.
Coinbase’s hosted facilitator simplifies this further by offering a ready-to-use, fee-free environment for USDC payments on Base.
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