x402 FAQ

Use client-side integration when end users are paying directly from their own wallets. For example, in applications or AI agents where users sign transactions themselves.

Use server-side integration when your backend or service handles payments such as when sponsoring user payments, automating paid API calls, or keeping API keys and logic secure.

Using thirdweb's facilitator you are able to support more tokens and chains than any other facilitator in the ecosystem.

You also have a built-in faciltator wallet to easily use and manage gas funds without worrying about topping up funds.

Yes, if you use the thirdweb facilitator your endpoint will auto-register to Nexus for discovery by AI agents.