AI agents with wallet access need strict payment controls, or they'll drain your funds on unauthorized API calls. The X402_ALLOWED_DOMAINS policy in WAIaaS creates a whitelist of trusted domains where your agent can make automatic payments, blocking everything else by default. When you deploy an AI agent with payment capabilities, you're essentially giving it a credit card that works across the internet. Without proper controls, a single misconfigured prompt or compromised dependency could result in thousands of dollars in unauthorized charges. The x402 HTTP payment protocol makes this even more dangerous—it allows any API to request payment directly from your agent's wallet with a simple 402 status code. Why Payment Domain Control Matters The x402 protocol is elegant but dangerous. When your AI agent hits an API that returns HTTP 402 (Payment Required), it can automatically pay the requested amount and retry the request. This creates seamless AI-to-API commerce, but also opens a massive attack vector.…