The Index › Retail › bestbuy.com
F
Best Buybestbuy.com
36/ 100 · Agentic Usability Score
Muse
Meta
?UntestedChatGPT Agent
OpenAI
?UntestedClaude
Anthropic
?UntestedComet
Perplexity
?UntestedGrok Bot
xAI
◌Not disallowedGemini
Google
✓AllowedManus
Manus
◌Not disallowedInstinct
Spear Street
?UntestedScore breakdown
Five pillars. Task completion is pending until the live task runner ships; the other four are rescaled to 100.
Accessrobots.txt stance + live door test
21/40
Consent & identity pathContent-Signal, published agent policy
0/10
Machine-readable surfacellms.txt, JSON-LD, landmarks, SSR
11/25
Agent protocolsUCP, MCP, A2A, OpenAPI
0/15
Task completionlive agent run: search → cart → checkout
pending
Evidence
Generated by the scanner from this run. Every line is reproducible with the open-source probe.
- ◐Homepage serves GoogleAgent-Mariner; no response to ChatGPT-User, Claude-User, Perplexity-User
- ✓robots.txt has no rule against any user-directed agent we test
- ◐robots.txt restricts some paths for ChatGPT-User, Claude-User, Perplexity-User, Gemini-Deep-Research
- ◐robots.txt names 33 user-agents
- ◐No Content-Signal in robots.txt
- ◐No llms.txt
- ◐No JSON-LD structured data on the homepage
- ✓Semantic landmarks present (main, nav)
- ◐No agent-protocol manifest (UCP, MCP, A2A, OpenAPI)
| Identified as | HTTP | Result |
|---|---|---|
ChatGPT-User | — | no response |
Claude-User | — | no response |
Perplexity-User | — | no response |
GoogleAgent-Mariner | 200 | normal page |
browser (human) | 200 | normal page |
What Best Buy would need to change
1Give agents a front doorProtocols · up to 12 pts
A Universal Commerce Protocol manifest for shopping, or an MCP server card for everything else. An agent that can call an API never needs to hold a customer's password.
GET /.well-known/ucp
{ "ucp": { "version": "2026-01-23",
"services": { "dev.ucp.shopping": [{ "transport": "rest", "endpoint": "https://www.bestbuy.com/api/ucp/v1" }] },
"capabilities": { "dev.ucp.shopping.checkout": [ … ] } } }
# or
GET /.well-known/mcp.json
{ "name": "Best Buy", "endpoint": "https://www.bestbuy.com/mcp", "transport": "streamable-http" }2Publish llms.txtSurface · up to 8 pts
A short markdown map of what the site does, where the important pages are, and how to search or check out.
/llms.txt # Best Buy > One paragraph on what this site is for. - [Products](/products): how to search and filter - [Checkout](/checkout): steps and constraints
3Add JSON-LD structured dataSurface · up to 6 pts
schema.org Organization on the homepage, Product + Offer on product pages, with price and availability.
<script type="application/ld+json">
{ "@context": "https://schema.org", "@type": "Organization", "name": "Best Buy", "url": "https://www.bestbuy.com/" }
</script>4Say your stance with a Content-SignalConsent · up to 3 pts
Two lines in robots.txt end the guessing game. ai-input covers agents reading pages on a person's behalf.
User-Agent: * Content-Signal: search=yes, ai-input=yes, ai-train=no Allow: /