{"uid":"cap_MKYFBbRkPjhBySORmrawI","slug":"x402-hub-alt-text-generator-9b70196f","name":"X402 Hub Alt Text Generator","description":"63 paid API endpoints protected by x402 micropayments on Base","url":"https://x402-hub.vercel.app/api/alt-text?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","required":["query"],"properties":{"query":{"type":"string","description":"Query parameter for the API"}}},"responseSchema":{"type":"object","properties":{"data":{"type":"object","description":"Response data from upstream API"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.075","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","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":"$0.075/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.075","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.075","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_qlNFQcpOtE2r4PwV0SBGh","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.075","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Generates descriptive alt text for images using AI, paid via x402 micropayments on Base","exampleAgentPrompt":"Generate alt text for this product image so I can make my website accessible: https://example.com/images/red-sneaker.jpg","exampleUseCases":[{"title":"E-commerce product image accessibility","prompt":"I have hundreds of product images on my store that are missing alt text — can you generate descriptive alt text for this image of our blue denim jacket: https://myshop.com/images/jacket-blue.jpg?"},{"title":"CMS automated image tagging","prompt":"We just uploaded a new blog post with this hero image and need alt text for accessibility: https://myblog.com/assets/team-photo-2024.jpg — can you describe what's in it?"},{"title":"Social media image description","prompt":"I'm posting this infographic on our website and need an accessible alt text description for screen reader users: https://cdn.example.com/infographic-q3-results.png"}],"resultDescription":"Returns a text description of the image suitable for use as HTML alt text, providing an accessible, human-readable summary of the image content for screen readers and WCAG compliance purposes.","failureModes":["Invalid or inaccessible image URL returns an error","Image format not supported by the underlying vision model","Insufficient USDC balance or x402 payment failure prevents the call","Query parameter missing causes a 400 validation error","Rate limiting or upstream model unavailability causes a 503"],"whenToPreferThis":"Choose this endpoint when you need to programmatically generate alt text for images at scale, especially in automated pipelines where accessibility compliance is required. Ideal for e-commerce platforms, CMS integrations, or any workflow where images lack descriptive metadata and WCAG compliance is needed. Best suited for agents that can handle x402 micropayments on Base.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T12:49:34.296Z","isFirstParty":false,"canonicalSlug":"x402-hub-alt-text-generator-9b70196f"}