UCP Checker

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.

Industry

UCP Tech Council Expands: What the Meeting Minutes Tell Us About Where the Protocol Is Heading

Amazon, Meta, Microsoft, Salesforce, and Stripe just joined the UCP Tech Council. No press release — just a commit. We read the meeting minutes so you don't have to.

· 8 min read
Guides

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
Guides

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
Guides

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
Research

Agentic Commerce Optimization: What 4,491 Merchants Reveal About UCP Readiness

Everyone's publishing guides on how to get UCP ready. We measured who actually is. Data from 4,491 merchants on capability adoption, platform gaps, and what agents really do at checkout.

· 11 min read
Industry

MCP vs UCP vs AP2: What is the Difference?

Stop picking between them. MCP, UCP, and AP2 are stack layers, not competitors. A practitioner breakdown with real adoption data from 3,643+ UCP-verified stores.

· 11 min read
Product

Introducing Side-by-Side Store Compare: See How Any Two UCP Stores Stack Up

The most common follow-up to a UCP status report has always been 'OK, but how does that compare to [other store]?' — so we built the thing people were already trying to do in two browser tabs.

· 7 min read
Industry

UCP v2026-04-08 Spec Update

The UCP Technical Council shipped v2026-04-08 — the largest single release in the protocol's history. Carts, catalog search, cryptographic signing, and a fundamental shift in how business profiles are validated. Here's what changed and what to do about it.

· 7 min read
ResearchTravel

We Tested 5 AI Models on Expiring Travel Inventory — Here's How They Failed

We built a mock travel server with expiring offers and tested Claude, GPT, Gemini, and Grok against it. No model checks TTLs before booking. Only one survived a 3-second expiry window. None flagged price changes unless asked. Here's the full data from 21 production sessions.

· 11 min read
Guides

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
Product

3,000 UCP Stores, Open Data: Why We're Publishing Our Dataset on Hugging Face

We've been crawling UCP manifests since January. This week we crossed 3,000 verified merchants — and it's time to share the data. Monthly snapshots, CC-BY 4.0, free to use.

· 5 min read
Product

The First Fully Autonomous AI Agent Purchase Through UCP

An AI agent searched a store, picked a product, linked a customer identity, selected wallet payment, set shipping, and completed checkout — creating a real WooCommerce order. No browser. No card network. No human after proceed.

· 5 min read