{"uid":"cap__CvLZoQzw2jm6HIevq6pF","slug":"alt-text-presence-checker-09308209","name":"Alt Text Presence Checker","description":"Machine-callable x402-paid utilities for autonomous agents.","url":"https://creator-desk-x402-isolated.onrender.com/v1/utility/alt-text-presence?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"value":{},"options":{"type":"object"}}},"responseSchema":{"type":"json","example":{"result":"example","operation":"alt_text_presence"}},"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_Rc5aMJeGjvoEyLVDOqpIY","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":"Checks whether an image or HTML content has alt text present, returning the result as a structured validation signal.","exampleAgentPrompt":"Can you check whether this image has alt text? Here's the URL: https://example.com/product-banner.jpg","exampleUseCases":[{"title":"Accessibility audit for product images","prompt":"Go through this list of product image URLs and tell me which ones are missing alt text so I can flag them for our accessibility review."},{"title":"CMS content quality gate","prompt":"Before we publish this blog post, can you verify that all the embedded images have alt text so we pass our accessibility standards?"},{"title":"Third-party embed compliance check","prompt":"I'm embedding images from a partner site — can you check whether each one already has alt text, or if I need to add it manually?"}],"resultDescription":"Returns a JSON object containing an 'operation' field set to 'alt_text_presence' and a 'result' field indicating whether alt text is present or absent for the given input — typically a boolean or descriptive string.","failureModes":["Missing or malformed 'value' input field returns an error or ambiguous result","Inaccessible or private image URLs may cause the check to fail or return inconclusive","Non-image or unsupported content types may not be interpretable","Network timeouts on slow image hosts can cause failures","Payment authorization failure via x402 prevents request from being processed"],"whenToPreferThis":"Choose this endpoint when you need a lightweight, programmatic check specifically for alt text presence — especially in automated accessibility pipelines, content publishing workflows, or agent-driven audits where you want a fast binary or descriptive signal without running a full accessibility scanner. It is ideal for per-image checks at $0.01 USDC per call via x402 micropayment.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-13T00:41:28.007Z","isFirstParty":false,"canonicalSlug":"alt-text-presence-checker-09308209"}