WebMCP + UCP: schema = nouns, WebMCP = verbs, UCP = wallet (Chrome 146 / Google I/O 2026)

Claim: Two protocols arrived in early 2026 that turn structured data from descriptions into actions:

• WebMCP — W3C Web Machine Learning CG, accepted Sept 2025; Chrome implementation Feb 10, 2026. Lets sites publish a "Tool Contract" so AI agents can call functions directly (addToCart, bookAppointment, etc.).
• UCP (Universal Commerce Protocol) — Google's standard demoed at I/O 2026 for agent-driven discovery, cart, and checkout.

Framing: Schema = nouns. WebMCP = verbs. UCP = wallet.

Sources: https://blog.google/innovation-and-ai/technology/ai/google-io-2026-all-our-announcements/; https://shopify.engineering/ucp; structureddata.co.uk.

Confidence: Verified (W3C + Google primary). Forward-looking: adoption is early. All ROI claims about "agentic commerce" are speculative as of May 2026.

Implication for Candid clients: Not a "build it now" recommendation. But Product schema today is the precondition. Sites without clean Product schema in 2026 will be invisible to the agent layer that emerges 2027-2028.