# x402-niche-briefs Product Schema Check > x402-niche-briefs Product Schema Check is a paid API for AI agents from x402-niche-briefs.fly.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-27). Checks a public product page URL for structured data quality (JSON-LD, Open Graph) and Google Merchant Center readiness, returning field-level diagnostics and a readiness summary. ## Facts - Endpoint: GET https://x402-niche-briefs.fly.dev/v1/product-schema-check?utm_source=zero.xyz - Price: $0.01/call - Payment: x402 - Status: unknown - Last checked: 2026-10-27 - Activations on Zero: 0 - Tags: x402 - Canonical page: https://www.zero.xyz/c/x402-niche-briefs-product-schema-check-d6446cbb - Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_CSCjubtWPk4y-LbVEplma Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently. ## How to call it through Zero Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`): ```sh zero fetch --capability x402-niche-briefs-product-schema-check-d6446cbb ``` Example prompt: Can you check whether the product page at https://www.allbirds.com/products/mens-tree-runners has valid schema.org Product markup and is ready for Google Merchant Center — tell me what fields are missing or have warnings? ## When to prefer this Choose this endpoint when you need a fast, per-URL structured data audit of a public ecommerce product page — specifically to assess Google Merchant Center readiness, validate schema.org Product JSON-LD fields, and identify missing required or recommended fields. Prefer this over general SEO crawlers when you specifically need GMC-focused field-level diagnostics (GTIN, MPN, condition, availability) and Open Graph tag extraction in a single lightweight call at $0.005 per check. ## Known failure modes - Non-public or paywalled product URLs return fetch errors or empty schema results - Pages with no JSON-LD or Open Graph markup will have product_found=false and empty product fields - Network timeouts or slow product pages may result in high fetch_ms or errors - Redirected URLs are followed to final_url but intermediate failures may occur - Malformed JSON-LD on the page is counted in invalid_jsonld_blocks rather than parsed - Non-product URLs (category pages, homepages) will not yield valid product data ## How this service works Ecommerce ops data paid per call over x402 (Base USDC, PayAI facilitator). ## Output Returns a JSON object with the fetched product page's HTTP status, JSON-LD block count, extracted schema.org Product fields (name, SKU, GTIN, brand, MPN, image, price, currency, availability, condition), Open Graph tags (title, price, currency, availability), an array of field-level checks each with a status and GMC impact rating, a summary of required missing fields and warnings with an overall readiness label, a suggested next step endpoint, fetch timing in milliseconds, and a disclaimer about the automated nature of the check. ## Request schema (JSON Schema) ```json { "type": "object", "$schema": "https://json-schema.org/draft/2020-12/schema", "required": [ "input" ], "properties": { "input": { "type": "object", "required": [ "type", "method" ], "properties": { "type": { "type": "string", "const": "http" }, "method": { "enum": [ "GET" ], "type": "string" }, "queryParams": { "type": "object", "required": [ "url" ], "properties": { "url": { "type": "string", "description": "Absolute http(s) URL of one public product page" } } } }, "additionalProperties": false }, "output": { "type": "object", "required": [ "type" ], "properties": { "type": { "type": "string" }, "example": { "type": "object", "$schema": "https://json-schema.org/draft/2020-12/schema", "required": [ "url", "final_url", "checked_at", "http_status", "fetch_ms", "bytes", "jsonld_blocks", "invalid_jsonld_blocks", "product_found", "product", "og", "checks", "summary", "next_step", "disclaimer" ], "properties": { "og": { "type": "object", "required": [ "title", "price_amount", "price_currency", "availability" ], "properties": { "title": {}, "availability": {}, "price_amount": {}, "price_currency": {} } }, "url": { "type": "string" }, "bytes": { "type": "number" }, "checks": { "type": "array", "items": { "type": "object", "required": [ "field", "status", "gmc_impact", "note" ], "properties": { "note": { "type": "string" }, "field": { "type": "string" }, "status": { "type": "string" }, "gmc_impact": { "type": "string" } } } }, "product": { "type": "object", "required": [ "name", "sku", "brand", "gtin", "mpn", "image", "price", "price_currency", "availability", "condition", "offer_count" ], "properties": { "mpn": {}, "sku": {}, "gtin": {}, "name": {}, … (truncated) ``` ## Response schema (JSON Schema) ```json { "type": "json", "example": { "og": { "title": "Men's Tree Runner - Jet Black (White Sole)", "availability": null, "price_amount": "100.00", "price_currency": "USD" }, "url": "https://www.allbirds.com/products/mens-tree-runners", "bytes": 858661, "checks": [ { "note": "schema.org Product markup present", "field": "jsonld_product", "status": "ok", "gmc_impact": "strongly_recommended" } ], "product": { "mpn": null, "sku": "TR3MJBW080", "gtin": null, "name": "Men's Tree Runner - Jet Black (White Sole) - Size 8", "brand": "Allbirds", "image": "https://www.allbirds.com/cdn/shop/files/TR3MJBW080_SHOE_LEFT_GLOBAL_MENS_TREE_RUNNER_JET_BLACK_WHITE.png?v=1751165486&width=100", "price": "100", "condition": null, "offer_count": 1, "availability": "InStock", "price_currency": "USD" }, "summary": { "warnings": 4, "readiness": "ready", "required_missing": 0 }, "fetch_ms": 239, "final_url": "https://www.allbirds.com/products/mens-tree-runners", "next_step": "Store-level policy pages: GET /v1/store-policy-check?url= ($0.01). Active GMC suspension: GET /v1/suspension-pack ($0.12).", "checked_at": "2026-10-17T02:57:40.100Z", "disclaimer": "Automated landing-page signal check, not a Google Merchant Center determination. Fetched live once per call; nothing stored.", "http_status": 200, "jsonld_blocks": 2, "product_found": true, "invalid_jsonld_blocks": 0 } } ``` ## More - Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-niche-briefs-product-schema-check-d6446cbb/health.json - [Zero catalog index](https://www.zero.xyz/llms.txt) - [Other services from x402-niche-briefs.fly.dev](https://www.zero.xyz/host/x402-niche-briefs.fly.dev/llms.txt)