{"uid":"cap_gAFUfb9oBi_TdsrgKuUcm","slug":"agentshelf-syntexa-ch-xpath-amp-html-link-extractor-b7ec87b7","name":"agentshelf.syntexa.ch XPath AMP HTML Link Extractor","description":"Call when an agent needs href of link rel=amphtml via //link[@rel='amphtml']/@href from a public page or HTML (SSRF-safe). Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/xpath-amphtml first.","url":"https://agentshelf.syntexa.ch/v1/xpath-amphtml?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"url":{"type":"string","maxLength":2048,"minLength":8,"description":"Public page to fetch. The selector or profile is fixed by the SKU. Provide url or html."},"html":{"type":"string","examples":["<!doctype html><html lang=\"en\"><head><title>Hello</title>\n<meta name=\"description\" content=\"Desc\"><meta property=\"og:title\" content=\"OG\">\n<link rel=\"canonical\" href=\"https://example.com/\"><link rel=\"icon\" href=\"/favicon.ico\">\n</head><body><h1>Hello</h1><a href=\"https://example.com/a\">A</a></body></html>"],"maxLength":200000,"minLength":1,"description":"HTML to extract from locally. Provide html or url. When both are set, html is used."}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","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":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_JnS33NMfLEB9rrwOibRZL","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Extracts the href value of the AMP HTML link element (link[rel='amphtml']) from a public web page URL or raw HTML string","exampleAgentPrompt":"Can you find the AMP version URL for this page? Here's the URL: https://www.example.com/article/breaking-news — grab the href from the link rel='amphtml' tag.","exampleUseCases":[{"title":"AMP URL discovery for news article","prompt":"I have this news article URL — https://www.bbc.com/news/technology-12345678 — can you find its AMP version link? I need the href from the link rel='amphtml' element."},{"title":"Validate AMP link in raw HTML","prompt":"Here's the raw HTML of a blog post page — can you pull out the href from the amphtml link tag so I can verify it has a proper AMP version?"},{"title":"Crawl pipeline AMP link extraction","prompt":"For each article URL in my list, starting with https://www.theguardian.com/world/2024/news-story, extract the amphtml link href so I can build a map of canonical-to-AMP URLs."}],"resultDescription":"Returns the string value of the href attribute from the first matching link[rel='amphtml'] element found in the fetched page or provided HTML, typically an absolute URL pointing to the AMP version of the page.","failureModes":["No amphtml link found — page has no AMP version, returns null or empty result","URL fetch blocked or times out — SSRF-safe filter rejects private/metadata IP ranges","HTML input too large — exceeds 200,000 character limit","Malformed URL — shorter than 8 characters or invalid format","Network error fetching the provided URL — returns error status"],"whenToPreferThis":"Use this endpoint when you need to programmatically discover the AMP (Accelerated Mobile Pages) version URL of a web page, either by providing a public URL to fetch or raw HTML you already have. It is SSRF-safe (blocks private and metadata addresses), making it suitable for agent pipelines that accept user-supplied URLs. Prefer this over building a custom XPath parser when you need a reliable, pay-per-call extraction of a well-known link relation.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T02:18:42.881Z","isFirstParty":false,"canonicalSlug":"agentshelf-syntexa-ch-xpath-amp-html-link-extractor-b7ec87b7"}