TollNode

Seedream 4.5 image generation

seedream-4-5

ByteDance's upgraded image model with stronger spatial understanding and world knowledge, at 2K or 4K for one price. Compared with other image tools: mid-priced. Price: $0.055 per image, charged only on success. One call = one image.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "prompt": "<prompt>"
    },
    "name": "seedream-4-5"
  }
}

Input Schema

Name	Required	Description
`size`	No	Same price for both. Default 2K
`prompt`	Yes	What to create or change
`image_input`	No	Reference or source image URLs (https), optional
`aspect_ratio`	No	Aspect ratio, default match_input_image

Schema Changelog

Changes observed during successful MCP inspections.

First observedNov 15, 2026

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