Free UCP Checker & AI Commerce Readiness Tool

Is Your Store Ready for AI Shopping?

ChatGPT, Gemini & Perplexity now shop for customers.
Check any domain's AI Commerce Score - from your own store to your full client portfolio - in seconds.

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Validates compliance with UCP and ACP— the open standards for AI-powered commerce from Google, Shopify, OpenAI & Stripe

Works with
—Domains Validated
30sResults
100%Free

UCPtools is an independent community tool, not affiliated with Google, Shopify, or the UCP consortium.

Why AI Commerce Readiness Matters

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AI Agents Are Shopping Now

ChatGPT, Gemini, and Perplexity can browse and buy. Is your store - or your clients' stores - visible to them?

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Open Standard by Industry Leaders

UCP was co-developed by Google, Shopify, Etsy, Wayfair, Target, and Walmart. Endorsed by 25+ organizations including Stripe, PayPal, Visa.

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Actionable Insights in Seconds

Not just a score - specific issues with exact fixes. Know what to fix, whether you're managing your own store or reporting back to clients.

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Independent Community Tool

UCPtools is not affiliated with Google, Shopify, or the UCP consortium. Free forever to validate.

Check any domain free →

Frequently Asked Questions

Everything you need to know about UCP, ACP, and AI-ready commerce

UCP is an open standard developed by Google, Shopify, and 25+ major partners — including Visa, Mastercard, Stripe, Walmart, and Target — announced at the National Retail Federation conference in January 2026. It enables AI shopping agents (primarily Google AI Mode and Gemini) to discover, browse, and complete purchases on e-commerce stores. Merchants publish a JSON manifest at /.well-known/ucp describing their capabilities, payment handlers, and API endpoints.
A JSON validator only confirms valid syntax. UCPtools runs 4 validation levels: (1) structural checks for required fields and version format, (2) UCP compliance rules including namespace/origin binding, extension dependency chains, and HTTPS-only endpoints, (3) network validation fetching live schemas from ucp.dev, and (4) agent simulation testing the full discovery-to-checkout flow an AI agent would experience. In scanning 9 real stores, 89% passed structural validation but 0% were fully transactable by an AI agent due to missing signing keys or payment handlers.
The 3 most frequent errors across validated profiles are: (1) missing signing keys (UCP_MISSING_SIGNING_KEYS) — required for webhook verification but absent in most manual implementations; (2) payment handler misconfiguration — the payment.handlers array is missing or empty; (3) namespace/origin mismatch (UCP_NS_ORIGIN_MISMATCH) — the schema URL domain does not match the capability namespace authority. These errors do not prevent JSON parsing but cause AI agents to skip the store entirely.
Shopify has native UCP support through the Shop app with automatic /.well-known/ucp generation. WooCommerce has 5+ available plugins — UCPReady by Zologic is the most production-ready with 94% checkout success in testing. Magento, BigCommerce, and Wix require custom implementation or middleware. Squarespace cannot natively serve /.well-known/ paths and requires a Cloudflare Worker workaround. UCPtools provides step-by-step platform guides for all major platforms.
UCP (Universal Commerce Protocol) is developed by Google and Shopify; ACP (Agentic Commerce Protocol) is developed by OpenAI and Stripe. They serve different AI agents: UCP powers Google AI Mode and Gemini; ACP powers ChatGPT Shopping. UCP uses a static JSON manifest at /.well-known/ucp; ACP uses a server-to-server REST API with Stripe Shared Payment Tokens. Merchants aiming for maximum AI coverage should implement both. UCPtools validates both protocols in a single scan.
Publish a UCP Business Profile at /.well-known/ucp on your domain. This JSON file declares your store capabilities, supported payment methods (e.g., Google Pay), signing keys, and API endpoints. Use the free UCPtools generator to create a valid profile in under a minute, then validate it with the checker to catch the 4-level compliance issues that break AI agent discovery. Shopify users get this automatically via the Shop app.
No. UCPtools is an independent community tool, not affiliated with Google, Shopify, or the UCP consortium. UCP is an open standard — any developer can build tools around it. UCPtools provides free validation, generation, simulation, and ACP checking. Paid plans start at $9/month for up to 3 domains, adding continuous monitoring, alerting when a profile breaks, and AI agent visit analytics.

What is UCP (Universal Commerce Protocol)?

The Universal Commerce Protocol (UCP) is an open standard co-developed by Google, Shopify, and 25+ partners including Stripe, PayPal, Visa, and Mastercard. Announced at the National Retail Federation conference in January 2026, UCP enables AI shopping agents to discover, browse, and complete purchases on e-commerce stores. Merchants publish a JSON manifest at /.well-known/ucp that describes their capabilities, payment handlers, and checkout flow — allowing AI agents to transact programmatically.

Why Use a UCP Checker?

A UCP checker validates that your store's profile is correctly formatted and compliant with the UCP specification. Without validation, a single missing field or malformed endpoint can make your store invisible to AI shopping agents — resulting in lost sales as competitors capture AI-driven traffic. Our free UCP checker tests your /.well-known/ucp file across four validation levels, validates Schema.org markup (MerchantReturnPolicy, ShippingDetails), and generates an AI readiness score with specific fix suggestions.

Key Features of Our UCP Checker

  • UCP Profile Validation — Four-level check of your /.well-known/ucp endpoint: structural validation, rules compliance, network verification, and official SDK testing
  • Schema.org Analysis — Validate MerchantReturnPolicy, OfferShippingDetails, and Product schemas that AI agents rely on for product discovery
  • AI Agent Simulation — Test how Google AI Mode and other agents will discover and interact with your store in real-time
  • Security Scan — Verify HTTPS, CORS headers, and security configuration required by the UCP specification
  • Product Feed Analysis — Check your product data quality for AI agent visibility and structured data completeness
  • UCP Profile Generator — Generate valid UCP profiles with signing keys and payment handlers for any platform
  • ACP Readiness Checker — Check if your store is ready for ChatGPT Shopping with platform detection, Stripe integration, policy pages, and HTTPS verification

How Does UCPtools Compare to Other UCP Validators?

There are several UCP validation tools available, each with different strengths. See our detailed comparisons: UCPtools vs UCP Checker, UCPtools vs UCP Lighthouse, and UCPtools vs WebsiteAIScore. Or browse all comparisons to find the right tool for your workflow.

Which AI Agents Shop Using UCP?

Several AI agents already use UCP to discover and purchase products on behalf of consumers:

  • Google AI Mode — Integrated into Google Search, AI Mode uses UCP to browse product catalogs, compare prices, and initiate checkout directly from search results
  • Gemini App— Google's AI assistant uses UCP for conversational shopping, helping users find and buy products through natural language
  • Shopify Shop App— Native UCP support enables AI-powered product discovery across Shopify's merchant network

What is ACP (Agentic Commerce Protocol)?

ACP (Agentic Commerce Protocol) is an open standard developed by OpenAI and Stripe that powers ChatGPT's shopping experience. Unlike UCP (a static JSON manifest), ACP is a server-to-server REST API with five checkout endpoints (create_checkout, get_checkout, update_checkout, confirm_checkout, cancel_checkout) plus a delegate_payment endpoint. Payment is handled via Stripe Shared Payment Tokens (SPT), so customers can pay through ChatGPT without sharing card details with individual merchants.

Shopify and Etsy merchants have built-in ChatGPT Shopping integrations. All other platforms need to apply at chatgpt.com/merchants, implement the five ACP endpoints, and integrate Stripe SPT.

Our tool checks both UCP and ACP readinessin a single scan, giving you a complete picture of your store's AI commerce preparedness. You can also use our dedicated ACP Readiness Checker for a focused ACP-only analysis.

Who Uses a UCP Checker?

  • E-commerce merchants — Verify your store is visible to AI shopping agents before competitors capture that traffic
  • Development teams — Validate your /.well-known/ucp file before deployment to catch errors early
  • E-commerce agencies — Audit client stores for AI readiness and generate compliance reports
  • Platform integration teams — Ensure UCP integration works correctly across different e-commerce platforms

What If Your Store Isn't UCP Ready?

If our UCP checker finds issues with your profile, here's how to get started:

Supported Platforms

Our UCP checker supports all major e-commerce platforms including Shopify, WooCommerce, Magento (Adobe Commerce), BigCommerce, Wix, and Squarespace. Each platform has different requirements for implementing UCP — check our platform-specific guides for step-by-step instructions.

Browse AI Commerce-Ready Stores

Our UCP Directory tracks 100+ e-commerce stores and their AI commerce readiness. Each store is scored and graded on UCP compliance, supported transports, and checkout capabilities. Browse the directory to see how leading brands are preparing for AI-powered shopping.