So it's an "open standard" and you can use any chain that meets Coinbase's "acceptance criteria". So under this guise, their whole goal is to make themselves centralizing force.
we will happy accept PRs the add support for any chains that can perform the payment flows in a safe, non-custodial way for the client, resource server and faciliator. Currently x402 works with any EVM chain, and we're working with several chains on integrating.
__erik|9 months ago