{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://midjourney.com/schemas/image-generation-job.json",
  "title": "Midjourney Image Generation Job",
  "description": "Represents an asynchronous image generation job in the Midjourney API, including its configuration parameters, current status, and generation results.",
  "type": "object",
  "required": ["id", "type", "status", "created_at"],
  "properties": {
    "id": {
      "type": "string",
      "format": "uuid",
      "description": "The unique identifier assigned to this image generation job."
    },
    "type": {
      "type": "string",
      "description": "The type of image generation operation performed by this job.",
      "enum": ["imagine", "upscale", "variation", "describe", "blend"]
    },
    "status": {
      "type": "string",
      "description": "The current processing status of the job.",
      "enum": ["pending", "in_progress", "completed", "failed", "cancelled"]
    },
    "progress": {
      "type": "integer",
      "description": "The completion progress as a percentage from 0 to 100.",
      "minimum": 0,
      "maximum": 100
    },
    "prompt": {
      "type": "string",
      "description": "The text prompt submitted for image generation.",
      "maxLength": 4000
    },
    "parameters": {
      "$ref": "#/$defs/GenerationParameters"
    },
    "parent_job_id": {
      "type": "string",
      "format": "uuid",
      "description": "The job identifier of the parent generation, present for upscale and variation jobs."
    },
    "image_index": {
      "type": "integer",
      "description": "The index of the selected image from the parent job grid, present for upscale and variation jobs.",
      "minimum": 1,
      "maximum": 4
    },
    "result": {
      "$ref": "#/$defs/JobResult"
    },
    "error": {
      "$ref": "#/$defs/JobError"
    },
    "webhook_url": {
      "type": "string",
      "format": "uri",
      "description": "The webhook URL configured to receive status change notifications for this job."
    },
    "webhook_type": {
      "type": "string",
      "description": "Controls when webhook notifications are delivered for this job.",
      "enum": ["progress", "result"],
      "default": "result"
    },
    "created_at": {
      "type": "string",
      "format": "date-time",
      "description": "ISO 8601 timestamp when the job was created."
    },
    "updated_at": {
      "type": "string",
      "format": "date-time",
      "description": "ISO 8601 timestamp when the job was last updated."
    },
    "completed_at": {
      "type": "string",
      "format": "date-time",
      "description": "ISO 8601 timestamp when the job completed processing."
    }
  },
  "$defs": {
    "GenerationParameters": {
      "type": "object",
      "description": "Configuration parameters that control the image generation process.",
      "properties": {
        "aspect_ratio": {
          "type": "string",
          "description": "The aspect ratio for generated images, expressed as width:height.",
          "pattern": "^[0-9]+:[0-9]+$",
          "default": "1:1"
        },
        "model_version": {
          "type": "string",
          "description": "The Midjourney model version used for generation.",
          "enum": ["5.2", "6.0", "6.1", "7.0"]
        },
        "process_mode": {
          "type": "string",
          "description": "The processing speed mode for the generation job.",
          "enum": ["fast", "turbo", "relax"],
          "default": "fast"
        },
        "quality": {
          "type": "number",
          "description": "The quality setting controlling detail level and GPU time consumption.",
          "enum": [0.25, 0.5, 1.0, 2.0],
          "default": 1.0
        },
        "stylize": {
          "type": "integer",
          "description": "The stylization strength from 0 (literal) to 1000 (highly artistic).",
          "minimum": 0,
          "maximum": 1000,
          "default": 100
        },
        "chaos": {
          "type": "integer",
          "description": "Controls the diversity between the four generated images in a grid.",
          "minimum": 0,
          "maximum": 100,
          "default": 0
        },
        "seed": {
          "type": "integer",
          "description": "Seed value for reproducible generation results.",
          "minimum": 0,
          "maximum": 4294967295
        },
        "no": {
          "type": "string",
          "description": "Negative prompt specifying elements to exclude from generated images."
        }
      }
    },
    "JobResult": {
      "type": "object",
      "description": "The output of a successfully completed image generation job.",
      "properties": {
        "images": {
          "type": "array",
          "description": "List of generated images with download URLs and metadata.",
          "items": {
            "$ref": "#/$defs/GeneratedImage"
          }
        },
        "prompts": {
          "type": "array",
          "description": "Generated text prompt suggestions, present only for describe job results.",
          "items": {
            "type": "string"
          }
        }
      }
    },
    "GeneratedImage": {
      "type": "object",
      "description": "A single generated image with its metadata and download URL.",
      "required": ["url"],
      "properties": {
        "url": {
          "type": "string",
          "format": "uri",
          "description": "The URL where the generated image can be downloaded."
        },
        "index": {
          "type": "integer",
          "description": "The position of this image in the generation grid (1-4).",
          "minimum": 1,
          "maximum": 4
        },
        "width": {
          "type": "integer",
          "description": "The width of the image in pixels.",
          "minimum": 1
        },
        "height": {
          "type": "integer",
          "description": "The height of the image in pixels.",
          "minimum": 1
        },
        "content_type": {
          "type": "string",
          "description": "The MIME type of the image file.",
          "enum": ["image/png", "image/webp"]
        }
      }
    },
    "JobError": {
      "type": "object",
      "description": "Error information for a failed image generation job.",
      "required": ["code", "message"],
      "properties": {
        "code": {
          "type": "string",
          "description": "Machine-readable error code identifying the type of failure."
        },
        "message": {
          "type": "string",
          "description": "Human-readable description of the error."
        }
      }
    }
  }
}