{"uid":"cap_Al34EQfiONnQOY6yU7LPT","slug":"signalharness-web-metadata-extractor-5a982beb","name":"SignalHarness Web Metadata Extractor","description":"Explore 330 pay-per-call x402 API services and 27 agent-native digital products, with Base USDC pricing, secure Polar checkout, and free discovery.","url":"https://signalharness.ai/api/agent/services/web_metadata_extract/invoke","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"url":{"type":"string","pattern":"^https://","maxLength":2048,"minLength":9},"html":{"type":"string","maxLength":65536,"minLength":1},"baseUrl":{"type":"string","pattern":"^https://","maxLength":2048,"minLength":9}}},"responseSchema":{"type":"json","example":{"replay":false,"result":{"icons":[{"href":"example","sizes":"example","relation":"example"}],"jsonLd":["{\"example\":\"schema-valid caller-supplied data\"}"],"robots":["example"],"twitter":[{"name":"example","value":"example"}],"warnings":["Verify the caller-supplied data before relying on this result."],"openGraph":[{"name":"example","value":"example"}],"contentType":"Example caller-supplied content.","alternateLanguages":[{"href":"example","language":"example"}]},"status":"succeeded","receipt":{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","usage":[],"status":"succeeded","network":"eip155:8453","artifacts":[],"endedAtMs":0,"latencyMs":0,"paymentId":"example-payment","receiptId":"example-receipt","requestId":"example-request","serviceId":"web_metadata_extract","executionId":"example-execution","startedAtMs":0,"amountAtomic":"10000","resultSha256":"6fd2a8bfad3dba7e59252456d43728a949ecd09f865325d69489315168e8e7ad","serviceVersion":"1.0.0","settlementReference":"0x0000000000000000000000000000000000000000000000000000000000000000"},"artifacts":[],"requestId":"example-request","executionId":"example-execution"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_uGTsOca7Lzne9BVqqsmto","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Extracts structured web metadata (Open Graph, JSON-LD, Twitter cards, robots, icons, content type) from a given URL or raw HTML.","exampleAgentPrompt":"Can you pull all the structured metadata from https://example.com — I need the Open Graph tags, JSON-LD, Twitter card info, icons, and content type?","exampleUseCases":[{"title":"SEO audit for a landing page","prompt":"Grab the Open Graph tags, JSON-LD structured data, and Twitter card metadata from https://mycompany.com/landing-page so I can audit what gets shown when people share it on social media."},{"title":"Enrich link previews in a feed","prompt":"I have this URL https://techcrunch.com/2024/01/ai-startups — can you extract its Open Graph image, title, description, and any JSON-LD so I can build a rich link preview card?"},{"title":"Check for alternate language versions","prompt":"Look up https://wikipedia.org/wiki/Artificial_intelligence and tell me all the alternate language URLs, plus any robots directives and the content type that come back in the metadata."}],"resultDescription":"Returns a JSON object containing extracted structured metadata from the target webpage, including: Open Graph properties, JSON-LD objects, Twitter card tags, robots directives, page icons, content type, alternate language links, and any parsing warnings. Also includes a receipt with payment confirmation, latency, and execution details.","failureModes":["URL is not reachable or returns non-2xx HTTP status","HTML content exceeds 65,536 character limit","URL does not start with https:// (pattern validation failure)","Page has no structured metadata — returns empty arrays for all fields","Network timeout fetching the remote URL","Malformed HTML that cannot be parsed cleanly — warnings array may be populated"],"whenToPreferThis":"Choose this endpoint when you need to extract all standard web metadata formats (OG, JSON-LD, Twitter cards, robots, icons) from a single URL in one call at very low cost ($0.01 USDC). Prefer it over general scraping tools when the goal is specifically structured SEO/social metadata rather than full page content, and over browser automation when you don't need JavaScript rendering.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T18:57:26.352Z","isFirstParty":false}