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OpenAPI Specification

openapi: 3.2.0
info:
  title: Stability AI Stable Image Upscale Conservative Upscale API
  description: The Stability AI Stable Image Upscale API enables developers to increase the resolution of images using AI-powered upscaling models. The API offers conservative upscaling, which preserves the original image closely while increasing resolution, creative upscaling, which enhances and adds detail to images during the upscaling process, and fast upscaling for quick resolution increases. These endpoints are useful for improving image quality for print, display, or further processing workflows.
  version: v2beta
  contact:
    name: Stability AI Support
    url: https://platform.stability.ai
  termsOfService: https://stability.ai/terms-of-service
servers:
- url: https://api.stability.ai
  description: Production Server
security:
- bearerAuth: []
tags:
- name: Conservative Upscale
  description: Increase image resolution while closely preserving the original image details and composition with minimal creative additions.
paths:
  /v2beta/stable-image/upscale/conservative:
    post:
      operationId: upscaleImageConservative
      summary: Conservative upscale an image
      description: Increases the resolution of an image while closely preserving the original details and composition. This endpoint minimizes creative additions, making it ideal for upscaling photographs or images where fidelity to the original is important. This is an asynchronous endpoint that returns a generation ID for polling.
      tags:
      - Conservative Upscale
      requestBody:
        required: true
        content:
          multipart/form-data:
            schema:
              $ref: '#/components/schemas/ConservativeUpscaleRequest'
      responses:
        '200':
          description: Generation started successfully
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AsyncGenerationResponse'
        '400':
          description: Bad request due to invalid parameters
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '401':
          description: Unauthorized due to missing or invalid API key
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '429':
          description: Rate limit exceeded
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
components:
  schemas:
    ConservativeUpscaleRequest:
      type: object
      required:
      - image
      - prompt
      properties:
        image:
          type: string
          format: binary
          description: The image to upscale. Must be a valid image file.
        prompt:
          type: string
          maxLength: 10000
          description: Text describing the image content to help guide the upscaling process.
        negative_prompt:
          type: string
          maxLength: 10000
          description: Text describing elements to avoid adding during upscaling.
        seed:
          type: integer
          minimum: 0
          maximum: 4294967294
          default: 0
          description: A value to control randomness in generation.
        output_format:
          type: string
          enum:
          - jpeg
          - png
          - webp
          default: png
          description: The output format of the upscaled image.
    AsyncGenerationResponse:
      type: object
      properties:
        id:
          type: string
          description: The unique generation ID used to poll for results.
        status:
          type: string
          description: The current status of the generation.
    ErrorResponse:
      type: object
      properties:
        id:
          type: string
          description: A unique identifier for the error instance.
        name:
          type: string
          description: The error type name.
        message:
          type: string
          description: A human-readable description of the error.
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: API key authentication. Pass your Stability AI API key as a Bearer token in the Authorization header.
externalDocs:
  description: Stability AI API Documentation
  url: https://platform.stability.ai/docs/api-reference