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UCP Score

UCP Score for stays.ucpsandbox.com

UCP conformance score, top priorities, impact & effort matrix, and copy-paste fixes for every issue.

✓Verified
B84/100
Analyzed Oct 1, 2026 · 3 recommendations ·Custom · v2026-08-25 latest
84
/ 100
UCP Conformance Score
B

Solid UCP setup on stays.ucpsandbox.com with a few gaps left to close.

Agent Discovery85
UCP Conformance100
Capability Coverage60
Working

UCP Conformance is solid (100/100).

Start Here

Publish Organization schema (JSON-LD) on the homepage → Publish a sitemap.xml → Add Open Graph meta tags to the homepage

Verified

stays.ucpsandbox.com publishes a valid UCP manifest. That is what it declares. An observed agent run shows how far an agent actually gets.

Latency
111ms
Version
2026-08-25
Robots.txt
Allowed ✅

Top Priorities

1
Publish Organization schema (JSON-LD) on the homepage

No Organization-typed JSON-LD detected on your homepage.

Medium impact Medium effort
2
Publish a sitemap.xml

No sitemap.xml detected at the root of your domain.

Low impact Low effort
3
Add Open Graph meta tags to the homepage

OG tags missing or incomplete on your homepage.

Low impact Low effort

Impact & Effort Matrix

Prioritised recommendations by expected impact and implementation effort

Quick Wins(0)

High impact, low effort

  • No items
Strategic Investments(0)

High impact, high effort

  • No items
Incremental Gains(1)

Medium impact & effort

  • Publish Organization schema (JSON-LD) on the homepage
Consider Later(2)

Lower priority

  • Publish a sitemap.xml
  • Add Open Graph meta tags to the homepage

How you compare on Custom

Response time benchmarked against 114 Customs we monitor.

fastCustom median 327msslow
Your store
111ms
Custom percentile
Top 10%
Faster than 93% of Custom stores
Cohort range
197–540ms
p25 to p75 (middle half)
Headless / custom stackCustom-built storefronts have the most flexibility but also the most surface area for inconsistency between environments. Run the score in staging before each deploy that touches manifest, schemas, or transports.

Recommendations

All improvements ranked by priority, with evidence and actionable fixes.

1

Publish Organization schema (JSON-LD) on the homepage

Medium impact Medium effort

No Organization-typed JSON-LD detected on your homepage.

Why it matters

Organization schema gives agents a structured representation of your brand identity: name, logo, social profiles, contact info, founding date. Agents use this to verify you are who you claim to be and to link your manifest data to a recognizable entity.

Show fix

Drop into <head> or end of <body>. Use OnlineStore (more specific) when the entire site is an ecommerce store; Organization is the generic fallback.

<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "OnlineStore",
  "name": "Yourstore",
  "url": "https://yourstore.com",
  "logo": "https://yourstore.com/logo.png",
  "sameAs": [
    "https://twitter.com/yourstore",
    "https://www.instagram.com/yourstore"
  ],
  "contactPoint": {
    "@type": "ContactPoint",
    "telephone": "+1-800-000-0000",
    "contactType": "Customer Service"
  }
}
</script>
UCP_MISSING_ORG_SCHEMA
2

Publish a sitemap.xml

Low impact Low effort

No sitemap.xml detected at the root of your domain.

Why it matters

Sitemaps tell agents and crawlers which pages on your store are canonical and how often they change. Without one, agents fall back to following internal links, which is slower and less complete, especially for catalog pages buried behind faceted nav.

Show fix

Most ecommerce platforms generate sitemap.xml automatically. If yours does not, generate one and serve it at /sitemap.xml.

<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
  <url>
    <loc>https://yourstore.com/</loc>
    <changefreq>daily</changefreq>
  </url>
  <url>
    <loc>https://yourstore.com/products</loc>
    <changefreq>daily</changefreq>
  </url>
  <!-- one <url> entry per indexable page -->
</urlset>
UCP_MISSING_SITEMAP
3

Add Open Graph meta tags to the homepage

Low impact Low effort

OG tags missing or incomplete on your homepage.

Why it matters

OG tags give agents and link unfurlers (Slack, iMessage, ChatGPT) a clean title, description, and image to represent your store. Without them, shares show garbled fallback text.

Show fix

Add inside <head>. og:title and og:type are the minimum; og:url, og:description, and og:image are strongly recommended.

<meta property="og:title" content="Yourstore | short tagline">
<meta property="og:type" content="website">
<meta property="og:url" content="https://yourstore.com/">
<meta property="og:description" content="One-sentence description of what you sell.">
<meta property="og:image" content="https://yourstore.com/og-cover.jpg">
<meta property="og:site_name" content="Yourstore">
UCP_MISSING_OG_TAGS

Full Check Breakdown

Every signal we evaluate, grouped by category.

Agent Discovery5/8 passed

Can AI agents find your store and its UCP manifest?

  • HTTPSCore

    Manifest served over a secure connection.

    Manifest URL uses https://

    Why it matters

    Agents reject non-HTTPS endpoints outright. Signed payloads over HTTP are meaningless because the channel itself is tamperable.

  • UCP manifest reachableCore

    Manifest fetched OK from /.well-known/ucp.

    HTTP 200

    Why it matters

    Agents start every session by fetching this URL. If it 404s or times out, the store is invisible to agent commerce.

  • AI bot accessCore

    robots.txt allows agent crawlers to fetch the manifest.

    robots.txt allows /.well-known/ucp

    Why it matters

    Agents respect robots.txt. Even a published manifest gets ignored if the file is disallowed for known agent user-agents.

  • llms.txtExperimental

    Hand-written brief at /llms.txt for AI agents.

    Found at /llms.txt

    Why it matters

    Emerging convention (analogous to robots.txt). Recommendation/discovery agents read it for brand context, return policy, and crawl preferences.

  • sitemap.xmlCore

    XML sitemap published at /sitemap.xml.

    HTTP 404 at /sitemap.xml

    Why it matters

    Tells agents which pages are canonical and how often they change. Without it, agents fall back to following internal links.

  • Open Graph tagsCore

    OG meta tags on the homepage.

    Missing or incomplete on homepage

    Why it matters

    OG tags drive how your store unfurls in agent surfaces, Slack, iMessage, and ChatGPT shares.

  • Organization schema (JSON-LD)Core

    Schema.org Organization (or OnlineStore) JSON-LD on homepage.

    Missing or incomplete on homepage

    Why it matters

    Gives agents a structured representation of your brand identity — used to verify you are who your manifest claims you are.

  • Mobile viewport metaCore

    Viewport meta tag for mobile rendering.

    <meta name="viewport"> present

    Why it matters

    Mobile agent sessions render in browser sandboxes that respect this. Without it, screenshots taken by agents are unreadable.

UCP Conformance4/4 passed

Does your manifest meet the published spec?

  • Manifest passes schema validationCore

    Manifest structure conforms to the published UCP spec.

    No structural errors

    Why it matters

    Strict UCP agents reject manifests with structural errors. The error code in the diagnostic shows which field failed.

  • Protocol version present and well-formedCore

    ucp.version follows YYYY-MM-DD format.

    Version: 2026-08-25

    Why it matters

    UCP versions are dates, not semver. Agents pick the closest matching schema based on this string.

  • Signing keys publishedCore

    Root-level keys array (canonical since 2026-07-12; legacy signing_keys also accepted) for response verification.

    signing_keys present

    Why it matters

    Required for tokenized payment flows in v2026-04-08+. Stores using checkout-link redirects (e.g. WooCommerce native) often skip this safely.

  • No validation warningsCore

    Manifest passes structural and field-level rules.

    No outstanding validation issues

    Why it matters

    Each warning is a strict-spec deviation — the recommendations section above lists them with copy-code fixes.

Capability Coverage2/4 passed

What operations can agents actually perform?

  • Capabilities declaredCore

    Number of agent-readable capabilities under ucp.capabilities.

    1 capability detected

    Why it matters

    Capabilities tell agents what operations to attempt. More coverage = more sessions complete end-to-end without falling back to scraping.

  • Checkout capabilityCore

    Store declares a checkout-namespaced capability.

    No checkout capability

    Why it matters

    Without a checkout capability, agents can browse but can't complete a purchase end-to-end.

  • Transports declaredInterop

    Service transports (REST/MCP/A2A/Embedded) declared on services.

    REST, MCP

    Why it matters

    Transports tell agents how to actually call your endpoints. MCP and REST are the most widely supported today.

  • Payment handlersCore

    Tokenized payment handlers registered for in-conversation checkout.

    2 handlers registered

    Why it matters

    Tokenized payment lets agents complete purchases without redirecting the buyer to a hosted checkout. Empty by design is valid for WooCommerce-style native checkouts.

/llms.txt content

The plain-text brief this store publishes to AI agents. Captured on the most recent check.

5.2 KB10e94a61d31c8aae
mentions UCP
# Harbour Row Stays

> A small guesthouse on the harbour. A reference travel store for booking agents.
> Independent reference stores, run by UCP Checker. Not affiliated with the UCP project or Google. Nothing here is for sale: test cards only, no goods ship.

Reference lodging store operated by UCP Checker. UCP 2026-08-25; lodging booking is the draft capability dev.ucp.lodging.booking (not in the 2026-08-25 release).
Everything an agent can do here a person can do on the same pages: same rooms, same booking sessions, same bookings.

## Machine surfaces

- UCP discovery manifest: https://stays.ucpsandbox.com/.well-known/ucp
- REST (lodging service): https://stays.ucpsandbox.com/ucp/booking-sessions and friends (OpenAPI at https://stays.ucpsandbox.com/ucp/openapi.json)
- MCP endpoint (JSON-RPC): https://stays.ucpsandbox.com/mcp: search_properties, create/get/update/complete/cancel_booking_session, get_booking, cancel_booking, lookup_locations
- Store search (not UCP): https://stays.ucpsandbox.com/ucp/search?start_date=YYYY-MM-DD&end_date=YYYY-MM-DD&adults=2
- WebMCP: storefront pages register tools on document.modelContext

## Property

- Property id: prop_harbour_row
- Address: 14 Harbour Row, Portland, ME 04101
- Check-in from 15:00, check-out by 11:00 (America/New_York)
- Bookable 60 nights ahead, up to 14 nights per stay, one room per booking session

## Rooms

- rt_harbour: Harbour Room. Sleeps 2 · Queen bed · Sea view · 24 m². From $189.00 a night on the flexible rate.
- rt_loft: Loft Suite. Sleeps 3 · King bed + daybed · Terrace · 38 m². From $264.00 a night on the flexible rate.
- rt_garden: Garden Studio. Sleeps 2 · Double bed · Kitchenette · 28 m². From $172.00 a night on the flexible rate.
- rt_quay: Quay Twin. Sleeps 2 · Twin beds · Courtyard · 21 m². From $158.00 a night on the flexible rate.

## Rate plans

- rp_flex: Flexible. Room only. Free cancellation until 3 pm hotel time two days before check-in; after that the first night is charged. Pay when you book or at the property.
- rp_flex_bb: Flexible with breakfast. Everything in Flexible, plus breakfast for two each morning, served from 7:30 to 10 in the front room.
- rp_saver: Non-refundable. Room only, 12% off the flexible rate. Paid in full when you book; no changes or refunds once booked.
- rp_member: Member rate. 10% off the flexible rate with the same free cancellation, plus late check-out until 1 pm. For Harbour Row Club members: link your account at the guest step.

## Policies

- Cancellation: Flexible rates can be cancelled free of charge until 3 pm hotel time two days before check-in. After that deadline the first night is charged and the rest is refunded, or released if you were paying at the property. Non-refundable rates are paid in full at booking and are not refunded or changed. Cancel from your confirmation page or through the booking's cancel operation.
- Payment: Flexible rates can be paid in full when you book, or at the property on arrival with a card held as a guarantee. Non-refundable rates are paid in full when you book. This is a test store: only test cards are accepted and no money moves.
- House rules: Check-in is from 3 pm with a door code sent on the morning of arrival; check-out is by 11 am (1 pm on the member rate). The house is quiet after 10 pm. No smoking anywhere in the building. Dogs are welcome in the Garden Studio by arrangement and nowhere else. Children are welcome; the Harbour Room and Loft Suite take one child in addition to two adults.
- Privacy: A test store keeps booking details for seven days and then deletes them. Nothing is shared with anyone; nobody is expecting you.

## Testing

- Payment instruments (handler mock_payment_handler): instr_1 (Visa …1234, approves); instr_2 (Mastercard …5678, approves); instr_fail (Visa …0000, declines)
- Pay at the property: payment.selected_term_id "pt_pay_at_property", instrument handler_id "pay_at_property" (card held as guarantee, nothing charged)
- Member: [email protected] is a Harbour Row Club member (member rate rp_member)
- Scenarios: stays-search-miss.ucpsandbox.com (Catalogue search returns nothing for every query.); stays-slow.ucpsandbox.com (Every response is delayed by two seconds.); stays-decline.ucpsandbox.com (Every payment is declined by the issuer.)

## FAQ

- Q: Is anyone actually expecting me? A: No. Harbour Row Stays is a reference store run by UCP Checker for testing booking agents. Bookings are recorded, confirmed and cancellable, but the house does not exist.
- Q: When is the free cancellation deadline? A: 3 pm hotel time (America/New_York) two days before check-in, on flexible and member rates. The exact deadline is on every booking session and confirmation.
- Q: What does 'pay at the property' mean here? A: Nothing is charged when you book. A test card is held as a guarantee under the pay_at_property handler and the full amount is due at check-in.
- Q: How do I get the member rate? A: Link a Harbour Row Club account at the guest step. In this test store, [email protected] is a member; the rate is 10% off flexible with late check-out.
- Q: Can I book more than one room? A: One room per booking session. Make a second session for a second room.
- Q: How far ahead can I book? A: Sixty days. The calendar rolls forward every night so there are always sixty bookable nights.
View source ↗

Capabilities Detected

UCP capabilities supported by this endpoint
Booking ✓ Bound 2026-08-25
Payment Terms Extension ✓ Bound 2026-08-25
Policy Cancellation Extension ✓ Bound 2026-08-25
Location Lookup ✓ Bound 2026-08-25

Technical Vitals

Technical details for this UCP endpoint
UCP Status Verified
Endpoint https://stays.ucpsandbox.com/.well-known/ucp
HTTP Status 200
UCP Version 2026-08-25
Transports REST, MCP
Last Observed
Last Full Index

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