{"uid":"cap_-WViv1aJsm7EZw0vA15IT","slug":"pagecheck-html-audit-api-c97aa0f6","name":"PageCheck HTML Audit API","description":"Audit supplied HTML for metadata, canonical URLs, indexability directives, headings, image alternatives, form labels, link names, social metadata and JSON-LD validity. Returns evidence and practical fixes. Static checks are not a full WCAG certification or ranking guarantee.","url":"https://pagecheck-api-production.up.railway.app/v1/pages/audit?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"url":{"type":"string","format":"uri","default":"https://example.com/article"},"html":{"type":"string","maxLength":250000,"minLength":1},"target_keyword":{"type":"string","maxLength":100}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.05","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":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_aw8k7VTonl1262QZ1hdsD","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Audits supplied HTML for SEO metadata, accessibility, indexability, social tags, and structured data validity, returning evidence and actionable fixes","exampleAgentPrompt":"Can you audit this HTML for SEO and accessibility issues — check the metadata, heading structure, image alt text, canonical URL, indexability directives, social tags, and JSON-LD validity, and tell me what needs fixing? The target keyword is 'best running shoes'.","exampleUseCases":[{"title":"Pre-publish SEO health check","prompt":"Before I publish this blog post, audit the HTML for me — check the title tag, meta description, heading structure, canonical URL, and whether search engines will actually index it. Here's the full HTML of the article page."},{"title":"Accessibility compliance scan","prompt":"Run an accessibility audit on this page's HTML — I need to know about any missing image alt text, unlabeled form fields, and link names that aren't descriptive enough. Here's the HTML."},{"title":"Structured data and social metadata validation","prompt":"Can you check my product page HTML for valid JSON-LD structured data and make sure the Open Graph and Twitter card tags are all set up correctly? Flag anything that's broken or missing."}],"resultDescription":"Returns a structured audit report covering: metadata completeness (title, description), canonical URL status, indexability directives (robots meta, X-Robots-Tag), heading hierarchy analysis, image alt text gaps, form label issues, link name accessibility, Open Graph and Twitter social metadata, and JSON-LD validity — each with supporting evidence and specific remediation recommendations.","failureModes":["HTML too large (exceeds 250,000 character limit) — request rejected","Malformed or empty HTML — audit may return incomplete or erroneous findings","Invalid URI format for URL field — validation error returned","Network or service unavailability on Railway hosting — 5xx errors possible","Payment failure via x402 protocol — request not processed"],"whenToPreferThis":"Choose this endpoint when you need a fast, programmatic, per-page HTML audit covering SEO fundamentals (metadata, canonicalization, indexability), basic accessibility signals (alt text, form labels, link names), and structured data validity in a single call. It is ideal for CI/CD pipelines, content management workflows, or agent-driven pre-publish checks where you have raw HTML available. It is not a substitute for a full WCAG certification tool, a live crawler, or a ranking-factor analysis platform.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-19T00:35:57.643Z","isFirstParty":false,"canonicalSlug":"pagecheck-html-audit-api-c97aa0f6"}