SiteCheck Describe Image

x402

SiteCheck Describe Image is a paid API for AI agents from api.sitecheck-api.workers.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-31).

Analyzes an image (via URL or base64) using a vision LLM and returns a natural-language description, detected objects, and optional question answering about the image content.

Price / call$0.003

Seller volume →—

Success—

StatusUnknown

How this service works

Describes an image from an https URL or base64 (JPEG, PNG, GIF or WEBP, up to 4 MB): a short description, visible objects, whether it contains text, and the answer to an optional question. Uses Llama 3.2 11B Vision; the model's answers can be wrong.

Output

Returns a JSON object containing: a natural-language description of the image, an array of detected objects, the MIME type of the image, the model used (Llama 3.2 11B Vision via Cloudflare Workers AI), an optional answer field if a question was asked, a containsText field, and a timestamp of when the check was performed.

Example use cases

Product image content audit

“Here's a product image URL: https://shop.example.com/item123.jpg — can you describe what's in it and list any objects you detect? I need to verify it actually shows the product.”

Automated alt-text generation

“I need a natural-language description of this image at https://cdn.myblog.com/header.png so I can use it as alt text for accessibility.”

Visual question answering on uploaded photo

“I have a base64-encoded photo of a restaurant menu — can you tell me if there are any vegetarian options listed in it?”

Technical details

Endpoint

POSThttps://api.sitecheck-api.workers.dev/api/describe-image?utm_source=zero.xyz

When to prefer

Choose this endpoint when you need a quick, pay-per-call vision analysis of a single image without managing your own AI infrastructure. It is ideal for agents that occasionally need image understanding as part of a broader workflow, especially when the image is accessible via a public URL. Prefer this over self-hosted solutions when cost predictability per call ($0.003) matters more than volume discounts.

Side effects

Invalid or unreachable image URL returns an error
Base64 data that is malformed or not a valid image format fails decoding
Very large images may time out or be rejected
Model may return null for answer if the question is unanswerable from the image
Unsupported MIME types may not be processed correctly

Input

Schema · Request body

Field	Type	Description
url	string	https:// image address
image	string	Or base64 image data
question	string	Optional question about the image

Output

Schema · Response

{
  "type": "json",
  "example": {
    "mime": "image/jpeg",
    "model": "@cf/meta/llama-3.2-11b-vision-instruct",
    "answer": null,
    "source": "Llama 3.2 11B Vision (Workers AI)",
    "objects": [],
    "checkedAt": "2026-10-14T11:01:18.713Z",
    "description": "Based on the image, this appears to be a rural or countryside area, possibly a farm or vineyard, with a mix of greenery, trees, and buildings in the background.",
    "containsText": null
  }
}

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