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X402 Hub Alt Text Generator
x402
X402 Hub Alt Text Generator is a paid API for AI agents from x402-hub.vercel.app, paid per call via x402, $0.075/call, status unknown (last checked 2026-10-01).
Generates descriptive alt text for images using AI, paid via x402 micropayments on Base
Price / call$0.075
Success—
StatusUnknown
How this service works
63 paid API endpoints protected by x402 micropayments on Base
Output
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.
Example use cases
E-commerce product image accessibility
“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?”
CMS automated image tagging
“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?”
Social media image description
“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”
Technical details
Endpoint
POSThttps://x402-hub.vercel.app/api/alt-text?utm_source=zero.xyzWhen to prefer
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.
Side effects
- 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
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| queryrequired | string | Query parameter for the API |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| data | object | Response data from upstream API |
Tags
x402
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