{"uid":"cap_pFvdj9vVakdfDko03XcU_","slug":"agentshelf-syntexa-ch-css-h3-extractor-5d0e6218","name":"agentshelf.syntexa.ch CSS H3 Extractor","description":"Call when an agent needs h3 text via h3 from a public page or HTML (SSRF-safe). Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/css-h3 first.","url":"https://agentshelf.syntexa.ch/v1/css-h3?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 charset=\"utf-8\"><meta name=\"description\" content=\"Desc\">\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":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_qicpwm78IJKgOJeOWau8o","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Extracts all H3 heading text from a public webpage URL or raw HTML using CSS selection, returning the text content of every h3 element found.","exampleAgentPrompt":"Can you pull all the h3 headings from https://example.com/blog/article so I can see the section titles?","exampleUseCases":[{"title":"Extract article section titles","prompt":"Go to https://news.ycombinator.com and grab all the h3 headings from the page so I can see what topics are listed."},{"title":"Parse headings from raw HTML","prompt":"I have this HTML snippet — can you extract all the h3 text from it? Here it is: <html><body><h3>Introduction</h3><h3>Key Findings</h3><h3>Conclusion</h3></body></html>"},{"title":"Audit competitor page structure","prompt":"Can you fetch https://stripe.com/pricing and return all the h3 headings so I can understand how they've organized their pricing sections?"}],"resultDescription":"Returns the text content of all h3 elements found in the provided URL or HTML, typically as a list of strings representing each heading's inner text.","failureModes":["URL is unreachable or returns non-200 status — extraction fails with an error","SSRF protection blocks the URL (internal/private IPs not allowed)","Page has no h3 elements — returns an empty list","HTML input exceeds 200,000 character limit — rejected","URL string shorter than 8 characters or longer than 2048 characters — validation error","Malformed HTML may result in incomplete or no extraction","Payment of $0.002 USDC not fulfilled — request rejected with 402"],"whenToPreferThis":"Use this endpoint when you need specifically h3-level headings from a page and want SSRF-safe remote URL fetching or raw HTML parsing. Prefer the unpaid sandbox at POST /v1/sandbox/css-h3 for testing. Choose this over generic scrapers when you only need h3 text and want a lightweight, cost-predictable call.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T06:50:19.860Z","isFirstParty":false,"canonicalSlug":"agentshelf-syntexa-ch-css-h3-extractor-5d0e6218"}