x402 Payer/Payee Processing

[MarcoMetaMask]

(To be better scoped. This is only for "x402 payer." I'm not sure "x402 payee" is doable, since usually the Payment Request generation is attached to and very close to the application component that creates the service to be sold. So I'm not sure Agent0 can help there for now, but I'm happy to change my mind if you have ideas)

With the Agent0 SDK, you can:

• Give your agent a wallet
• Set max spending limits per target agent and/or endpoint

From that moment onwards:

• If messaging another agent or using a tool (see the Agent Messaging & Usage card) requires an x402 payment, the agent pays autonomously
• [We could also consider] Agent0 could expose a wallet MCP server to be used in any inference to pay for resources (API-gated resources, MCP vendors). Authentication TBD.

[MarcoMetaMask]

For the x402 payee, we could apply a proxy model in a similar way to how it's done in https://docs.mcpay.tech/

[TheGreatAxios]

For the x402 payee, we could apply a proxy model in a similar way to how it's done in https://docs.mcpay.tech/

I think the MCPay model makes a lot of sense here to explore. I am a bit proponent of simplification for developers. I think that arguably if we can make paying for resources even more seamless and then abstract it further we can help drive adoption. Developers and their agents should ALWAYS be able to be fully self-custodial or pull these types of abstractions out through just a private key and some gas however for increased adoption it is well worth the discussion of determine how we could allow a standardized provider model where proxies could sit in front of the agents and allow payment.

Bonus here is that by designing it this way existing chat and agentic consumption providers could integrate directly thanks to the open nature of x402.