Research, guides and ecosystem updates
Original research on UCP adoption, the State of Agentic Commerce report, guides for each store platform, and the latest spec changes, written for developers and platform teams building for agentic commerce.
Video, 3D and Image Variants in UCP: What the New Media Type Adds, and What Stores Send Today
UCP's Media type was one URL and one pair of dimensions. PR #690 adds image encodings, video renditions and streams, external players, 3D formats and posters. What changed, the rules for agents, and what live catalog replies carry today.
· 10 min read
UCP's Ask Capability Explained: Natural-Language Q&A for Shopping Agents
Buyers ask questions no schema predicts. UCP's proposed ask capability gives them a home: a free-form question in, a sourced answer out, and no side effects. What the draft does, where it fits, and what the Tech Council is still deciding.
· 9 min read
UCP Authority Binding: Proving an Extension Belongs to Who It Claims
How does an agent know a UCP extension is really from who it claims? Authority binding makes provenance checkable from the outside.
· 7 min read
What Is the UCP Location Capability? Geo Search, Lookup & Local Discovery
UCP is getting a Location capability — geo search, location lookup and geofencing for finding physical stores, restaurants and pickup points. How the proposed UCP location and geo endpoints work, and where they sit in the protocol.
· 8 min read
What Is a UCP Namespace? Reverse-DNS, Capabilities, and Who Can Claim One
Every UCP capability is named with a reverse-DNS namespace like dev.ucp.shopping.checkout. How namespaces work, why they are written backwards, and the proposed June 19 change (PR #530) that would define who can claim one.
· 6 min read
Is My Store WebMCP and UCP Ready? What Agent Checkout Actually Needs
WebMCP lets agents operate your store in the browser. UCP is what lets them actually buy. Here is what WebMCP-ready means for commerce — and how to check the half that closes the sale.
· 8 min read
How to Test Your UCP Implementation with AI Agents
Schema validators tell you if your markup is correct. They tell you nothing about whether an agent can buy from your store. Here's how to test UCP with real frontier agents across multiple models — and why static validation alone leaves you blind.
· 7 min read
UCP Variant Data: The #1 Reason Agent Checkouts Fail
Variant mismatches cause more agent checkout failures than any other issue we observe across 4,500+ monitored UCP stores. How to structure your variant data so agents reliably pick the right size, colour, and configuration — with concrete examples of what breaks and what doesn't.
· 12 min read
Is My Store UCP Ready? How to Check in 60 Seconds
Enter your domain and find out instantly. What UCP readiness means, what agents check, and the exact steps to go from failing to passing.
· 5 min read
UCP Requirements: What Your Store Needs Before Going Live
The minimum requirements to serve a working UCP endpoint, plus the recommended setup that gets agents to actually complete purchases. Based on data from 4,024 verified merchants.
· 5 min read
Common UCP Errors and How to Fix Them
We've monitored 4,500+ UCP endpoints. These are the most common errors, why they happen, and exactly how to fix each one.
· 7 min read
The Developer's Guide to UCP Tools in 2026
Every UCP tool compared — validators, monitors, agent testing environments, and the full developer toolchain. A fair guide covering UCPtools.dev, Nextwaves, Google, ucpvalidator.app, UCPChecker, and more.
· 8 min read