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The Index › Retail › sephora.com
D

Sephorasephora.com

43/ 100 · Agentic Usability Score
SelectiveScanned 2026-09-22 · local-node · method v0.1Edge: istio-envoy
Muse
Meta
?Untested
ChatGPT Agent
OpenAI
✕Blocked
Claude
Anthropic
✕Blocked
Comet
Perplexity
✕Blocked
Grok Bot
xAI
◌Not disallowed
Gemini
Google
✕Blocked
Manus
Manus
◌Not disallowed
Instinct
Spear Street
?Untested

Score 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
17/40
Consent & identity pathContent-Signal, published agent policy
0/10
Machine-readable surfacellms.txt, JSON-LD, landmarks, SSR
22/25
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 blocks identified agents: ChatGPT-User (HTTP 403), Claude-User (HTTP 403), Perplexity-User (HTTP 403), GoogleAgent-Mariner (HTTP 403)
  • ✓robots.txt has no rule against any user-directed agent we test
  • ◐No Content-Signal in robots.txt
  • ✓Publishes llms.txt
  • ✓Homepage carries 3 JSON-LD blocks
  • ◐Missing main/nav landmarks
  • ◐No agent-protocol manifest (UCP, MCP, A2A, OpenAPI)
Identified asHTTPResult
ChatGPT-User403blocked · “Access Denied”
Claude-User403blocked · “Access Denied”
Perplexity-User403blocked · “Access Denied”
GoogleAgent-Mariner403blocked · “Access Denied”
browser (human)200normal page

What Sephora would need to change

1Verify agents cryptographically instead of blocking them at the doorAccess · up to 23 pts

Your edge answers ChatGPT-User, Claude-User, Perplexity-User, GoogleAgent-Mariner with a block or interstitial. Web Bot Auth (HTTP Message Signatures, RFC 9421) lets an agent prove who it is per request; Cloudflare, Akamai, AWS WAF and Vercel can verify it. Allow verified agents and keep challenging the rest.

# Cloudflare: Security → Bots → Verified bots → allow category "AI Agent"
# Or verify yourself: fetch the agent's key from
#   https://<signature-agent>/.well-known/http-message-signatures-directory
# and check the Signature / Signature-Input headers (tag="web-bot-auth")

2Give 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.sephora.com/api/ucp/v1" }] },
  "capabilities": { "dev.ucp.shopping.checkout": [ … ] } } }

# or
GET /.well-known/mcp.json
{ "name": "Sephora", "endpoint": "https://www.sephora.com/mcp", "transport": "streamable-http" }

3Use semantic landmarksSurface · up to 5 pts

main, nav, header, footer and labeled forms. Everything an accessibility audit already asks for.

<header>…</header>
<nav aria-label="Primary">…</nav>
<main>…</main>
<form aria-label="Site search"><label for="q">Search</label><input id="q" name="q"></form>

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: /