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Sending: an HTTP Request node. Method POST, URL https://zaiped.com/v1/messages, authentication Generic Credential Type, Header Auth with name Authorization and value Bearer zp_..., body JSON with numberId, to and message.

Receiving: a Webhook node (POST). Register its production URL with POST /webhooks or in the console, subscribe to message.received, and read the body from the incoming item. Verify X-Zaiped-Signature with a Code node using the recipe in the webhooks chapter, and answer 200.

Agents: the MCP Client node connects to the MCP server with the same URL and header, and the AI Agent node can then send messages and manage templates as tools.