Hey HN! I built this free UCP Store Checker after Google and Shopify launched Universal Commerce Protocol in January 2026.<p>The problem: AI shopping agents (ChatGPT, Gemini, Perplexity) are starting to browse and buy from online stores. But 99% of stores are invisible to them. It's like the early 2000s web before robots.txt existed.<p>What is UCP? Think robots.txt for AI commerce. It's Google & Shopify's open standard that makes your store machine-readable so AI agents can discover products, check availability, and complete purchases.<p>What I built:
The tool instantly checks if your store:
- Exposes machine-readable product data
- Has protocol-compliant endpoints
- Can be discovered by AI shopping agents
- Is ready for agentic commerce<p>No signup. Just paste your URL and hit enter.
Try it: <a href="https://ucphub.ai/ucp-store-check/" rel="nofollow">https://ucphub.ai/ucp-store-check/</a><p>I tested 500+ stores before launch. Only 0.1% are UCP-ready. Most merchants don't even know this standard exists yet, but AI commerce traffic is already starting to flow.<p>The check runs in ~2 seconds and shows you exactly what's missing. Built this because I kept seeing merchants confused about why their products weren't showing up in AI agent results.<p>Technical details: Next.js frontend, validates UCP endpoints, checks for structured data schemas, analyzes protocol compliance. Open to feedback on what else to check for.<p>Curious what HN thinks. Is this the beginning of a major shift in e-commerce, or will AI agents never really take off for shopping?
Quite interested in this space - good idea and I think agent commerce will grow.<p>If I understand correctly, at least for Shopify I can already find products using:
<a href="https://shopify.dev/docs/agents/catalog/mcp" rel="nofollow">https://shopify.dev/docs/agents/catalog/mcp</a><p>and if I want to checkout I can use <a href="https://shopify.dev/docs/agents/checkout/mcp" rel="nofollow">https://shopify.dev/docs/agents/checkout/mcp</a>.<p>Although I think at least currently I need to request approval from Shopify to even use the checkout API - I believe they are rolling it out slowly (?)<p>Is it correct to say that your tool looks allows me to skip Shopify APIs and create my own AI agent to speak UCP directly to merchants?