{"uid":"cap_SaBSrMwfEok21D-R8hyWO","slug":"unprice-canonical-url-extractor-3c116a59","name":"unprice Canonical URL Extractor","description":"Tiny paid web services for agents. Pay per request with USDC on Base via x402, plus non-x402 Base USDC tx-hash checkouts for Merchant Feed Audit, Base USDC receipts, and recent wallet statements.","url":"https://volkov.evgeny.m2.fvds.ru/pay/canonical?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"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","properties":{"url":{"type":"string"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"url":"https://example.com","ogUrl":"","canonical":"https://example.com/"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_dQYZmYrEs2qupwWbit6bY","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Fetches a webpage and extracts its canonical URL and Open Graph URL metadata via a pay-per-request API using USDC on Base.","exampleAgentPrompt":"Can you fetch the canonical URL for https://example.com/some-page and tell me what the canonical link tag and og:url point to?","exampleUseCases":[{"title":"SEO canonical URL audit","prompt":"I need to know the canonical URL for https://techcrunch.com/2024/01/15/some-article — can you fetch the page and tell me what its canonical tag and og:url resolve to?"},{"title":"Deduplicating URLs in a content pipeline","prompt":"We have this URL https://blog.example.com/post?ref=twitter — can you look up its canonical URL so I can store the clean, preferred version?"},{"title":"Checking canonical tag for a landing page","prompt":"Can you check what canonical URL is set on https://shop.mystore.com/products/widget-pro so I can verify our SEO tags are correct?"}],"resultDescription":"A JSON object containing the input URL, the resolved og:url (Open Graph URL), and the canonical URL as declared in the page's HTML link tag (e.g. {\"url\": \"https://example.com\", \"ogUrl\": \"\", \"canonical\": \"https://example.com/\"}).","failureModes":["URL not accessible or returns non-200 status — canonical and ogUrl fields may be empty or null","Page has no canonical tag — canonical field returns empty string","Payment fails or USDC balance insufficient — 402 response, request not processed","Invalid or malformed URL input — request rejected with validation error","Timeout fetching slow or unresponsive pages — empty or partial response"],"whenToPreferThis":"Choose this endpoint when you need to programmatically extract the canonical URL or og:url metadata from any publicly accessible webpage in a pay-per-use model without a subscription. It is ideal for one-off SEO checks, URL normalization in data pipelines, or deduplication tasks where you need the authoritative URL a page declares for itself.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-18T06:32:19.420Z","isFirstParty":false,"canonicalSlug":"unprice-canonical-url-extractor-3c116a59"}