AI agents with message-signing capabilities need strict guardrails to prevent signing unauthorized messages that could compromise your security. The ERC8128_ALLOWED_DOMAINS policy in WAIaaS creates a whitelist of trusted domains where your AI agent can use cryptographic message signing, blocking all other requests by default. Without proper controls, an AI agent with signing privileges could potentially sign authentication messages for malicious services, authorize unintended actions, or leak sensitive information through signed data. This represents a significant security risk when deploying autonomous agents in production environments. The Risk: Unrestricted Message Signing When AI agents have access to private keys for message signing, they can interact with any service that accepts cryptographic signatures for authentication or authorization.…