$npx -y skills add Hainrixz/claude-seo-ai --skill seo-ecommerceConditionally audit and generate e-commerce structured data for product pages — validate Product/Offer (price, priceCurrency, availability), AggregateRating/Review, faceted-navigation canonicalization, and variant/ProductGroup handling, cross-checking page-to-schema-to-Merchant-f
| 1 | # seo-ecommerce (M18) |
| 2 | |
| 3 | Conditional commerce module: it only runs when commerce signals are detected, then audits and completes product structured data. Reference: `references/schema-tier1.md` (Product + Offer, Review/AggregateRating rows). |
| 4 | |
| 5 | ## Audits |
| 6 | Working from the PageSnapshot (`rendered_dom` if present, else `raw_html`): |
| 7 | 1. **Commerce gate**: detect commerce signals (price/currency text, add-to-cart/buy controls, `Product`/`Offer` schema, `og:type=product`). If none, every M18 finding is `not_applicable` (severity 0) — do not force product schema onto non-commerce pages. |
| 8 | 2. **Product + Offer**: `Product` has `name`, `image`; `Offer` has `price`, `priceCurrency`, `availability` (`schema.org/InStock` etc.). Per `references/schema-tier1.md`. |
| 9 | 3. **AggregateRating / Review**: if ratings are visibly shown, expect `AggregateRating` (`ratingValue`, `reviewCount`/`bestRating`) and/or `Review` (`author`). Never mark up ratings not visible on the page. |
| 10 | 4. **Page → schema → feed consistency (Tier 2)**: schema `price`/`priceCurrency`/`availability` must match visible on-page values and the Merchant Center feed. Mismatches risk disapproval and lost rich results. |
| 11 | 5. **Faceted navigation**: filter/sort URLs (`?color=`, `?sort=`) should canonicalize to the clean product/category URL or be `noindex`, to avoid index bloat and duplicate-content dilution. |
| 12 | 6. **Variants / ProductGroup**: multi-variant products should use `ProductGroup` with `hasVariant` and `variesBy`, not duplicate standalone `Product` blocks per SKU. |
| 13 | |
| 14 | ## Fixes |
| 15 | - **AUTO** (`fixable: auto`): generate complete, valid `Product`/`Offer`/`AggregateRating` JSON-LD inferred from the DOM (name, image, price, currency, availability, visible rating) inside a single `@graph` with a stable `@id`. The block is a diff for `fix`. |
| 16 | - **PROPOSED** (`fixable: proposed`): canonical/`noindex` tags for faceted URLs and `ProductGroup` restructuring — drafts requiring per-item accept. |
| 17 | - **ADVISORY** (`fixable: advisory`): price / availability mismatches between page, schema, and feed — the store backend/feed is the source of truth, so the tool never writes these. **Never invent** prices, currencies, availability, or ratings — ask the user or leave a clearly-marked TODO placeholder. |
| 18 | |
| 19 | ## Verification |
| 20 | - Offline: `node ${CLAUDE_SKILL_DIR}/../../scripts/validate-jsonld.mjs --url <u>` (`schema_validator`) — JSON validity + required Product/Offer properties. |
| 21 | - Tier 1: Google Rich Results Test / schema.org validator (`rich_results_api`) for merchant-listing eligibility. |
| 22 | - Tier 2: Merchant Center feed diff — compare schema vs feed `price`/`availability`. When the required data tier (feed/API) is unavailable, status is `needs_api`, never a false `pass`. |
| 23 | |
| 24 | ## Findings |
| 25 | Emit findings per `schema/finding.schema.json`. Severity 5 on ecommerce pages, 0 (`not_applicable`) otherwise; axis `both`. Examples: |
| 26 | - `M18.offer.missing_price` — Product without `Offer.price`/`priceCurrency` (status `fail`, severity 5, `fixable: auto`, axis `both`, confidence `established`). |
| 27 | - `M18.offer.price_feed_mismatch` — schema price differs from on-page/feed price (status `warn`, severity 5, `fixable: advisory`, axis `both`, confidence `directional`; needs feed → may be `needs_api`). |
| 28 | - `M18.facets.uncanonicalized` — indexable faceted URLs lack canonical/`noindex` (status `warn`, severity 5, `fixable: proposed`, axis `both`, confidence `directional`). |
| 29 | Each finding: `evidence.observed` quotes the page (e.g. the rendered price text or the offending `?filter=` URL); `verification.reproduce` is a runnable command; `expected_impact` is banded + confidence-tagged (no naked %). |
| 30 | |
| 31 | ## Honesty |
| 32 | - AggregateRating/Review markup does **not** guarantee star rich results — Google shows them at its discretion and gates them by policy; don't promise stars from markup alone. |
| 33 | - Faceted-URL hygiene reduces crawl/index waste but is not a direct ranking factor — frame as `directional`, not a guaranteed gain. |
| 34 | - Keep schema strictly consistent with visible content and the product feed; fabricated or feed-mismatched values invite Merchant disapproval, not a win. |