Agentic Usability Index · updated 2026-09-22

Can your agent use this site?

Paste a URL. We test whether AI agents like Muse, ChatGPT Agent, Claude, Comet, Grok Bot and Instinct can get in, read, and act on it. Then we tell the site exactly how to fix it.

Sites graded
40
on the public Index
Block at least one identified agent
26
of 40, by robots.txt or at the door
Publish an llms.txt
8
of 40
Publish a Content-Signal
0
of 40 · 1 speaks UCP

Most usable by agents Full index →

Agentic Usability Score, 0 to 100
1ChewyRetail Chewy · 74/100 · Access 40/40 · Surface 12/25 · Protocols 8/15 74B
2KayakTravel Kayak · 72/100 · Access 40/40 · Surface 25/25 · Protocols 0/15 72B
3StripeDeveloper Stripe · 72/100 · Access 40/40 · Surface 25/25 · Protocols 0/15 72B
4TargetRetail Target · 72/100 · Access 40/40 · Surface 25/25 · Protocols 0/15 72B
5ShopifyCommerce platform Shopify · 70/100 · Access 40/40 · Surface 23/25 · Protocols 0/15 70B
6NeweggRetail Newegg · 69/100 · Access 40/40 · Surface 22/25 · Protocols 0/15 69C
7GitHubDeveloper GitHub · 66/100 · Access 40/40 · Surface 19/25 · Protocols 0/15 66C
8AppleTech Apple · 63/100 · Access 40/40 · Surface 17/25 · Protocols 0/15 63C

Least usable by agents Full index →

Bottom of 40 graded companies
33ZillowReal estate Zillow · 28/100 · Access 17/40 · Surface 8/25 · Protocols 0/15 28F
34eBayRetail eBay · 27/100 · Access 21/40 · Surface 3/25 · Protocols 0/15 27F
35ExpediaTravel Expedia · 26/100 · Access 21/40 · Surface 3/25 · Protocols 0/15 26F
36Hotels.comTravel Hotels.com · 26/100 · Access 21/40 · Surface 3/25 · Protocols 0/15 26F
37RedditSocial & media Reddit · 26/100 · Access 17/40 · Surface 6/25 · Protocols 0/15 26F
38NY TimesSocial & media NY Times · 22/100 · Access 17/40 · Surface 3/25 · Protocols 0/15 22F
39AmazonRetail Amazon · 13/100 · Access 9/40 · Surface 3/25 · Protocols 0/15 13F
40OpenTableGrocery & food OpenTable · 10/100 · Access 6/40 · Surface 3/25 · Protocols 0/15 10F

Recently scanned by visitors

Anyone can scan any site. Visitor scans get a report card but do not join the public Index.

Run a site? Three changes move you up the Index this week

1 · Say your stance

Tell agents what's allowed instead of making them guess. Moves Access and Consent.

User-Agent: * Content-Signal: search=yes, ai-input=yes Allow: /

2 · Let verified agents in

Stop sniffing user-agents. Verify Web Bot Auth signatures and allow the agents that sign. Moves Access.

Signature-Agent: "https://agent.example" Signature-Input: sig1=("@authority" "signature-agent");created=…;expires=…;keyid="…";tag="web-bot-auth"

3 · Give agents a front door

Publish a UCP or MCP manifest so agents don't have to drive your UI. Moves Protocols.

GET /.well-known/ucp { "ucp": { "version": "2026-01-23", "services": { "dev.ucp.shopping": [ … ] } } }

Full guide with six steps and real syntax: For site owners →