Free AI Agent Shopping Simulator
Test how AI shopping agents discover, browse, and purchase from your store. Simulate Google AI Mode (UCP) agent interactions and check ChatGPT (ACP) readiness before they reach your customers.
Check ACP Readiness
The simulator tests UCP agent flows. For ChatGPT readiness, check ACP below.
ACP Readiness Checker
Check if your store is ready for OpenAI's Agentic Commerce Protocol (ChatGPT Instant Checkout).
What Does the AI Agent Simulator Test?
The AI Agent Shopping Simulator performs a comprehensive functional test of how AI shopping agents interact with your store. Unlike static validation, the simulator replicates the actual steps an AI agent takes when shopping on your behalf.
Discovery Flow
Tests whether AI agents can find and fetch your UCP profile at .well-known/ucp, and parse your declared services and transports.
Capability Inspection
Verifies that your declared capabilities (catalog, search, checkout, tracking) are properly configured and accessible.
Checkout Simulation
Simulates the full purchase flow: cart creation, item addition, payment handler verification, and order completion.
Readiness Scoring
Produces a detailed score breakdown across discovery, API access, checkout flow, and payment readiness categories.
Why Test AI Agent Interactions?
AI shopping agents are rapidly becoming a major commerce channel. ChatGPT, Google AI Mode, and Microsoft Copilot are already helping millions of users shop online. If your store is not ready for AI agents, you are losing sales you never even know about.
- Catch failures before customers do: AI agents fail silently when profiles are misconfigured
- Test the full purchase flow: A valid profile does not guarantee a working checkout
- Score your readiness objectively: Know exactly where your store stands versus competitors
- Fix issues with actionable feedback: Get specific scores for each interaction phase
How AI Shopping Agents Work
Understanding the AI agent shopping flow helps you optimize your store for AI commerce. Here is how an AI shopping agent interacts with a UCP-enabled store:
Discovery
The AI agent fetches /.well-known/ucp from your domain to discover your store's capabilities, endpoints, and supported transports.
Negotiation
The agent reads your capabilities array and selects the best transport method (REST, GraphQL) to communicate with your store's API.
Browsing
Using your declared catalog and search endpoints, the agent browses products, compares prices, and selects items on behalf of the user.
Checkout
The agent initiates a checkout flow using your payment handlers, creates a cart, applies shipping details, and completes the purchase securely.
How to Use the Simulator
Enter Your Domain
Type your store's domain (e.g., mystore.com) in the simulator input field above.
Run Simulation
Click "Simulate" to start the AI agent interaction test. The simulator will run through discovery, inspection, and checkout steps.
Review Scores
See your detailed score breakdown across discovery, API access, checkout flow, and payment readiness. Each category shows individual check results.
Fix Issues
Address any failed checks, update your UCP profile or API endpoints, then re-run the simulation to confirm improvements.
Complete Your AI Commerce Setup
What About ChatGPT and ACP?
ChatGPT uses ACP (Agentic Commerce Protocol) — a fundamentally different architecture from UCP. While UCP is a static JSON manifest that agents parse, ACP is a server-to-server REST API with five checkout endpoints (create, get, update, confirm, cancel) plus a delegate_payment endpoint powered by Stripe Shared Payment Tokens.
- Shopify & Etsy: Auto-eligible for ChatGPT Instant Checkout — no setup needed
- Other platforms: Apply at chatgpt.com/merchants, implement 5 ACP endpoints, integrate Stripe SPT
- Check readiness: Use the ACP checker above or our dedicated ACP Readiness Checker
Frequently Asked Questions
What does the AI Agent Shopping Simulator test?
The simulator tests four key areas of AI agent interaction with your store: discovery flow (can agents find your UCP profile at .well-known/ucp), capability inspection (can agents read your catalog, checkout, and payment capabilities), checkout simulation (can agents complete a full purchase flow), and overall readiness scoring. Each area is scored individually and combined into an overall AI readiness score.
How does the AI agent simulation work?
The simulator mimics the behavior of real AI shopping agents. It starts by discovering your UCP profile via the .well-known/ucp endpoint, then inspects your declared services, capabilities, and transport methods. It verifies that your REST API endpoints are accessible, checks schema loading, and simulates the full checkout flow including cart creation, payment handler verification, and order completion steps.
What AI shopping agents does the simulator emulate?
The simulator emulates the common interaction patterns used by major AI shopping agents including ChatGPT (OpenAI), Google AI Mode, Microsoft Copilot, and other UCP-compliant AI assistants. These agents all follow the Universal Commerce Protocol specification for discovery, browsing, and checkout, so the simulation covers the standard flow they all use.
What is a good AI readiness score?
Scores are broken into four categories: discovery, API access, checkout flow, and payment readiness. A score above 80% means your store is well-prepared for AI shopping agents. Scores between 50-80% indicate partial readiness with issues to fix. Below 50% means AI agents will likely fail when trying to interact with your store. Aim for 90%+ for the best AI commerce experience.
Do I need a UCP profile before running the simulator?
Yes, the simulator tests your live UCP profile. You need a .well-known/ucp file deployed on your domain before running the simulation. If you do not have one yet, use our free UCP Generator to create a profile, deploy it, then come back to test it with the simulator.
How is the simulator different from the UCP validator?
The UCP validator checks that your profile JSON is correctly formatted and compliant with the UCP specification (syntax, required fields, signing keys). The simulator goes further by testing real-world functionality: it actually attempts to discover your profile, access your API endpoints, load schemas, and simulate a checkout flow. Think of validation as a syntax check and simulation as a functional test.
Does the simulator test ChatGPT/ACP checkout?
The simulator tests UCP agent flows (discovery via .well-known/ucp, capability inspection, checkout simulation) used by Google AI Mode and Gemini. ChatGPT uses a different protocol called ACP (Agentic Commerce Protocol) — a server-to-server REST API by OpenAI and Stripe. For ACP readiness, use our dedicated ACP Readiness Checker at /acp-checker.
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