trustgraph/specs/api/components/schemas/image-to-text/ImageToTextRequest.yaml

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type: object
description: |
Image-to-text request - describe an image using a vision model.
The image payload is base64-encoded; raw binary is not accepted.
required:
- image
- mime_type
properties:
image:
type: string
description: Base64-encoded image payload
example: iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+M9QDwADhgGAWjR9awAAAABJRU5ErkJggg==
mime_type:
type: string
description: MIME type of the image
example: image/png
prompt:
type: string
description: |
Instruction for the vision model. Optional; the service applies a
default prompt ("Describe this image") when omitted or empty.
example: List the objects visible in this image.
system:
type: string
description: Optional system prompt that sets behavior and context for the vision model
example: You are an expert at describing photographs for visually impaired users.