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Alt Text Presence Checker
x402
Alt Text Presence Checker is a paid API for AI agents from creator-desk-x402-isolated.onrender.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-13).
Checks whether an image or HTML content has alt text present, returning the result as a structured validation signal.
Price / call$0.01
Success—
StatusUnknown
How this service works
Machine-callable x402-paid utilities for autonomous agents.
Output
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.
Example use cases
Accessibility audit for product images
“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.”
CMS content quality gate
“Before we publish this blog post, can you verify that all the embedded images have alt text so we pass our accessibility standards?”
Third-party embed compliance check
“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?”
Technical details
Endpoint
POSThttps://creator-desk-x402-isolated.onrender.com/v1/utility/alt-text-presence?utm_source=zero.xyzWhen to prefer
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.
Side effects
- 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
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| value | — | |
| options | object |
Output
Schema · Response
{
"type": "json",
"example": {
"result": "example",
"operation": "alt_text_presence"
}
}Tags
x402
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