[Bug]: `require_payment(...)` invalid resource

[matiasanaya]

What happened?

python/x402_a2a/core/helpers.py defines:

def require_payment(
    resource: Optional[str] = None,
    ...
) -> x402PaymentRequiredException:
    ....
    return x402PaymentRequiredException.for_service(
        resource=resource or "/service",
        ...
    )

where resource=resource or "/service", but /service is an invalid resource and facilitators will reject payments made to this resource.

Code of Conduct

• I agree to follow this project's Code of Conduct