sewingmachinesplus.com — AI Commerce Audit

HALFCRITICAL

HTTPS enforced sitewide + HSTS (≥ 6-month max-age)https-and-hsts-enforcedHSTS

Enforce HTTPS sitewide and ship a Strict-Transport-Security header with max-age ≥ 6 months

Why this matters: AI agents and payment flows refuse plain HTTP; weak HSTS is treated as effectively no HSTS by trust-and-safety scanners.

RFC 6797 — HTTP Strict Transport Security (HSTS)

−2.9impact

Findings (1)

Confirmed the homepage is HTTPS (status 200), probed http://sewingmachinesplus.com/ for redirect behaviour, and parsed the Strict-Transport-Security header (value: "max-age=7889238").

How: URL scheme + homepage status check, an http://host/ redirect probe through politeFetch, and a Strict-Transport-Security max-age parse (RFC 6797; ≥ 180-day threshold).

HSTS max-age is below the 6-month minimumCRITICAL
/parsed max-age = 7889238s (need ≥ 15552000s = 180 days)
What we found
```
max-age=7889238
```
What we expected
```
Strict-Transport-Security: max-age=31536000; includeSubDomains
```
Bump max-age to at least 15552000 (180 days). 31536000 (1 year) is required for preload-list inclusion.

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FAILHIGH

GTIN coverage on PDPsproduct-gtin-populatedSchema.orgMerchant

Populate gtin on every branded Product node

Why this matters: GTINs let agents match your product to the same item elsewhere; without them you lose cross-catalog matching.

schema.org/Product.gtin

−1.9impact

Findings (11)

Checked 20 sampled product pages for a GTIN in the Product JSON-LD (0 carry a valid GTIN, 0%).

How: Extract gtin / gtin8 / gtin12 / gtin13 / gtin14 from the first Product JSON-LD node on each PDP; validate digit length.

Coverage

0/20 · 0%

No valid GTIN on this product pageHIGH× 10
Populate gtin/gtin8/gtin12/gtin13/gtin14 with the manufacturer's barcode.
Affected (10)

…and 1 more

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FAILHIGH

UCP profile carries all four required top-level keysucp-profile-required-keysUCP

Add every required top-level key to the UCP profile

Why this matters: A profile missing one of the four required keys is treated as non-conformant — agent runtimes fall back to default behaviour and may skip the merchant.

UCP overview — required profile keys

−1.5impact

Findings (1)

Profile is missing required key(s): signing_keys.

How: Read the profile root (or top-level ucp wrapper) and verify the presence of version, services, capabilities, and signing_keys keys.

Required top-level key signing_keys is missingHIGH
/.well-known/ucp
What we expected
```
Add a top-level "signing_keys" field to the JSON document (empty array/object is fine).
```
Set signing_keys at the root of the JSON document.

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NAHIGH

UCP profile Cache-Control is shared-cacheable with max-age ≥ 60sucp-cache-headers-validUCP

Skipped — the runner did not surface transport metadata

Context: If your UCP profile says `no-cache`, agent runtimes re-fetch on every interaction — brittle at scale and prone to rate-limit failures.

UCP overview — profile caching

Not scoredimpact

Why this was skipped

Wanted to inspect the UCP profile's Cache-Control header, but the runner did not surface transport metadata.

How: Parse the Cache-Control header on the /.well-known/ucp response; require public, max-age ≥ 60, and no no-store/no-cache/private.

Transport metadata not available — runner update pendingLOW
/.well-known/ucp
This check activates once the runner (Task I1) populates ctx.wellKnownUcp.cacheControl.

NAHIGH

Every signing_keys[] entry is a valid JWKucp-signing-keys-validJWKS

Skipped — Profile declares no signing_keys; JWK validation has no entries to evaluate.

Context: Malformed JWK entries are rejected silently by agents — signed payloads cannot be verified and the merchant loses trust signal.

RFC 7517 — JSON Web Key (JWK)

Not scoredimpact

Why this was skipped

Profile declares no signing_keys; JWK validation has no entries to evaluate.

How: Walk signing_keys[] and validate each entry per RFC 7517 §4.1 (kty required) + RFC 7518 §6 (kty-specific required parameters). kid is OPTIONAL per RFC 7517 §4.5 and not enforced here.

FAILMEDIUM

HSTS policy carries the includeSubDomains directivehsts-include-subdomainsHSTS

Add includeSubDomains to your Strict-Transport-Security header

Why this matters: Without includeSubDomains, an HTTP subdomain (staging, mail, …) can be used to attack the apex's cookies.

RFC 6797 — HSTS `includeSubDomains` directive

−1.1impact

Findings (1)

Inspected the homepage Strict-Transport-Security header ("max-age=7889238") and the includeSubDomains directive is absent.

How: Parse the homepage Strict-Transport-Security header for the includeSubDomains directive (RFC 6797 §6.1.2).

HSTS header is missing the includeSubDomains directiveMEDIUM
/
What we found
```
max-age=7889238
```
What we expected
```
Strict-Transport-Security: max-age=31536000; includeSubDomains
```
Append ; includeSubDomains to your STS header once every subdomain you operate supports HTTPS.

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FAILMEDIUM

Organization/OnlineStore JSON-LD with contactPoint on homepageorganization-jsonld-with-contactSchema.org

Add an Organization (or OnlineStore) JSON-LD block to your homepage with a contactPoint

Why this matters: Organization markup with a contactPoint tells AI agents who you are and how a shopper can reach you for support.

schema.org/Organization (and OnlineStore subclass) with contactPoint

−1.1impact

Findings (1)

Found a homepage Organization node but its contactPoint is missing both email and telephone.

How: Parse homepage <script type="application/ld+json"> blocks, flatten @graph, and look for an Organization/OnlineStore/Store node with a contactPoint carrying email or telephone.

Homepage Organization node has no contactPoint with email or telephoneMEDIUM
/
What we expected
```
"contactPoint": [{"@type":"ContactPoint","contactType":"customer service","email":"support@example.com","telephone":"+1-555-123-4567"}]
```
Add a contactPoint object with at least one of email or telephone.

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NAMEDIUM

MerchantReturnPolicy merchantReturnLink URL is reachablemerchant-return-link-reachableReturns

Skipped — No MerchantReturnPolicy node carried a `merchantReturnLink` URL, so reachability has nothing to evaluate.

Context: A broken return-link makes Option B policies invisible — agents can't render or follow the link.

Google return-policy SD — merchantReturnLink reachability

Not scoredimpact

Why this was skipped

No MerchantReturnPolicy node carried a merchantReturnLink URL, so reachability has nothing to evaluate.

How: Collect every unique merchantReturnLink URL across all MerchantReturnPolicy nodes; probe each once via politeFetch (failSoft). 2xx counts as reachable.

NAMEDIUM

Each capability has version + spec + schemaucp-capability-required-fieldsUCP

Skipped — Profile declares no capabilities; required-field checks have nothing to evaluate.

Context: Capabilities missing version/spec/schema can't be matched against agent support tables — agents skip them silently.

UCP overview — capabilities

Not scoredimpact

Why this was skipped

Profile declares no capabilities; required-field checks have nothing to evaluate.

How: For each capabilities[] entry, require non-empty string values for version, spec, and schema.

FAILLOW

Product images meet Google’s 50,000-pixel area thresholdimage-area-50k-pixelsMerchant

Upload higher-resolution product images (area ≥ 50,000 pixels)

Why this matters: Tiny product images get dropped from Google’s shopping rich-result modules and are unhelpful to AI agents quoting your product visually.

Image quality (≥50K pixels area)

−0.4impact

Findings (11)

Inspected <img width=… height=…> attributes on 20 sampled product pages (0 have at least one image with area ≥ 50,000 px; dimensions absent from HTML are not HEAD-probed and count as indeterminate).

How: For every sampled PDP, parse <img> tags and read explicit width and height attributes; a PDP passes when at least one image has width × height ≥ 50,000. PDPs without any explicit-dimension <img> are marked indeterminate (this check does not HEAD image URLs).

Coverage

0/20 · 0%

No <img> on this PDP carries explicit width+height attributesLOW× 10
Server-render explicit width and height attributes so crawlers can verify image area without fetching.
Affected (10)
- /products/fei-fdfx-lg86 <img> tags found, none with width+height
- /products/fei-fdfx86 <img> tags found, none with width+height
- /products/adjustable-dress-form-classic-series-…92 <img> tags found, none with width+height
- /products/diamond-series-dressform-petite92 <img> tags found, none with width+height
- /products/diamond-series-dressform-small92 <img> tags found, none with width+height
- /products/diamond-series-dressform-medium92 <img> tags found, none with width+height
- /products/diamond-series-dressform-large92 <img> tags found, none with width+height
- /products/family-sew-fs320-serger-open-front48 <img> tags found, none with width+height
- /products/feiyue-domestic-sewing-machine-kit-hf…28 <img> tags found, none with width+height
- /products/feiyue-general-sewing-kit-fy14042 <img> tags found, none with width+height

…and 1 more

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FAILLOW

HSTS policy carries the preload directivehsts-preload-directiveHSTS

Add preload to your Strict-Transport-Security header and submit to hstspreload.org

Why this matters: HSTS preload-list inclusion is the strongest downgrade protection available — first-time visits are protected too.

RFC 6797 — HSTS `preload` directive (vendor extension)

−0.3impact

Findings (1)

Inspected the homepage Strict-Transport-Security header ("max-age=7889238") and the preload directive is absent.

How: Parse the homepage Strict-Transport-Security header for the preload directive (hstspreload.org vendor extension to RFC 6797).

HSTS header is missing the preload directiveLOW
/
What we found
```
max-age=7889238
```
What we expected
```
Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
```
Append ; preload after includeSubDomains and submit your domain at https://hstspreload.org/.

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HALFLOW

Product `aggregateRating` presentproduct-aggregate-rating-presentSchema.org

Add an AggregateRating to Product nodes when you have real reviews

Why this matters: Review ratings are a trust signal agents use to rank and filter products.

schema.org/AggregateRating

−0.1impact

Findings (11)

Looked for a valid aggregateRating on Product JSON-LD across 20 sampled product pages (6 valid, 30%).

How: On each Product node, parse aggregateRating (or the first element if it's an array) and require ratingValue in [0,5] AND reviewCount or ratingCount ≥ 1.

Coverage

6/20 · 30%

Product has no valid AggregateRating (ratingValue 0-5 + reviewCount/ratingCount ≥ 1)LOW× 10
Render aggregateRating from real review totals — never fabricate.
Affected (10)

…and 1 more

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NALOW

Declarative WebMCP forms are validwebmcp-declarative-tools-validwebmcp

Skipped — No declarative WebMCP forms found on the homepage or sampled product pages. WebMCP is an optional, experimental browser-agent capability — not in scope until advertised.

Context: If you expose WebMCP tools, browser agents call them directly instead of scraping — but a tool missing its name or description is unusable to the agent.

WebMCP — declarative form API

Not scoredimpact

Why this was skipped

No declarative WebMCP forms found on the homepage or sampled product pages. WebMCP is an optional, experimental browser-agent capability — not in scope until advertised.

How: Parse the homepage and sampled PDP HTML for <form> elements carrying WebMCP attributes (toolname/tooldescription/toolautosubmit), then validate each against the 5 declarative-form rules.

FAILINFO

Apple Pay markers detected (informational)apple-pay-detectedSchema.org

Enable Apple Pay through your payment processor (informational only)

Why this matters: Apple Pay is a checkout-quality signal for human shoppers — informational only, does not affect the agent-readiness score.

Apple Pay availability — payment options observed

No score impactimpact

Findings (1)

Scanned the homepage and 20 sampled PDPs for Apple Pay markers; none matched.

How: Substring match on known Apple Pay SDK/markup signatures (ApplePaySession, apple-pay-button, /apple-developer-merchantid-domain-association) across the homepage and every sampled PDP HTML.

No Apple Pay markers detected on the homepage or PDPsINFO
/
Enable Apple Pay in your payment processor's dashboard (Stripe / Adyen / Braintree). Informational only — does not affect the score.

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FAILINFO

Google Pay markers detected (informational)google-pay-detectedSchema.org

Enable Google Pay through your payment processor (informational only)

Why this matters: Google Pay is a checkout-quality signal for human shoppers — informational only, does not affect the agent-readiness score.

Google Pay availability — payment options observed

No score impactimpact

Findings (1)

Scanned the homepage and 20 sampled PDPs for Google Pay markers; none matched.

How: Substring match on known Google Pay SDK/markup signatures (pay.google.com/gp/p/js/pay.js, google.payments.api, <google-pay-button) across the homepage and every sampled PDP HTML.

No Google Pay markers detected on the homepage or PDPsINFO
/
Enable Google Pay in your payment processor's dashboard (Stripe / Adyen / Braintree). Informational only — does not affect the score.

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10 failing · 5 not checked · 15 shown