Image captioning API

Generate a caption describing an image from its URL. Answers needs like 'describe this image', 'caption this picture', 'what is in this photo'. (Scaffolded for the Python/FastAPI worker.)

Price$0.04per request

MethodPOST

Route/v1/media/image-caption

StatusPlanned

MIME typeapplication/json

Rate limit20/minute

CacheNo cache

mediaimagecaptioncaptioningvisiondescribealt-text

API URLhttps://x402.hexl.dev/v1/media/image-caption

Integration docs

Example request

{
  "imageUrl": "https://example.com/image.png"
}

Example response

{
  "caption": "A product dashboard showing paid API usage.",
  "provider": "worker"
}

Input schema

{
  "type": "object",
  "required": [
    "imageUrl"
  ],
  "properties": {
    "imageUrl": {
      "type": "string",
      "format": "uri"
    }
  }
}

Output schema

{
  "type": "object",
  "required": [
    "caption",
    "provider"
  ],
  "properties": {
    "caption": {
      "type": "string"
    },
    "provider": {
      "type": "string"
    }
  }
}