As agents move from “chat” to real-world action, we need an interoperable stack that spans discovery, capability execution, and transactional workflows—without bespoke integrations per site or platform. This talk distills practical lessons from three emerging building blocks: NLWeb (a way for websites to expose natural-language interfaces using existing web semantics like Schema.org/RSS and an MCP-compatible server surface), MCP (a standardized way for agents to invoke tools and retrieve context), and Google’s Universal Commerce Protocol (UCP) (an open-source set of common commerce primitives meant to standardize end-to-end shopping journeys across merchants, surfaces, and payment providers).