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GEDX402 uform-gen2-qwen-500m Image Captioning
x402
GEDX402 uform-gen2-qwen-500m Image Captioning is a paid API for AI agents from media.gedx402.com, paid per call via x402, $0.415/call, status unknown (last checked 2026-09-15).
Generates a natural language caption or answer from a base64-encoded image using the UForm-Gen2-Qwen-500M vision-language model, payable via USDC on multiple chains with no API key required.
Price / call$0.415
Success—
StatusUnknown
How this service works
x402 workers ai. pay with usdc on base, polygon, arbitrum, world, or solana. no api keys.
Output
A JSON object with a 'description' field containing a natural language caption or answer about the provided image, e.g. {"description": "A sunset over mountains."}
Example use cases
Generate alt-text for social media posts
“I've got a bunch of product photos I need alt-text for — can you look at each one (I'll send them as base64) and generate a short, descriptive caption? Nothing fancy, just something concise that describes what's actually in the image.”
Analyze security camera footage frames
“I'm reviewing some security camera screenshots from today — can you take a look at each frame (base64 format) and tell me what's happening in the image? Just describe the scene, any people, vehicles, or activity you can spot.”
Extract descriptions from user uploads
“Users are uploading images to our platform and I need to auto-generate descriptions for them. Can you process these images (I'll provide them as base64) and give me a natural language description of what each one shows?”
Technical details
Endpoint
GEThttps://media.gedx402.com/v1/caption/uform-gen2-qwen-500mWhen to prefer
Choose this endpoint when you need lightweight, fast image captioning or visual QA without managing API keys, billed per-call via USDC on Base, Polygon, Arbitrum, World, or Solana. Ideal for agents that need to caption or describe images on demand in a pay-as-you-go fashion using the x402 payment protocol.
Side effects
- Invalid or malformed base64 image data returns an error
- Missing required 'image' field causes a bad request
- max_tokens too large may exceed model limits
- Payment not fulfilled results in HTTP 402 response
- Unsupported image format (non-JPEG/PNG) may fail silently or produce poor output
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| image | string | Base64-encoded image for multimodal input. |
| prompt | string | Optional question or instruction about the image. |
| max_tokens | integer | Maximum tokens in the vision model response. |
Output
Schema · Response
{
"type": "json",
"example": {
"description": "A sunset over mountains."
}
}Tags
x402
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