Design

Image Duotone Effect

Apply duotone effect that maps image colors to two-color gradient for artistic effect

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Quick start

Call this tool from your code in three languages.

cURL

# 1) Upload each file first → returns { filePath }
curl -X POST 'https://api.elysiatools.com/upload/image-duotone' \
  -F 'file=@/path/to/imageFile.ext'

# 2) Call the tool with the returned filePath values
curl -X POST 'https://api.elysiatools.com/en/api/tools/image-duotone' \
  -F 'imageFile=/path/to/file.ext' \
  -F 'primaryColor=#646464' \
  -F 'secondaryColor=#000064' \
  -F 'mode=classic' \
  -F 'format=original' \
  -F 'quality=95'

API reference

Send a POST request with your inputs as JSON. File parameters require a separate upload first.

Endpoint

HTTP

POST https://api.elysiatools.com/en/api/tools/image-duotone

Parameters

Name	Type	Required	Description
imageFile	fileupload required	Yes	Upload any image file (JPEG, PNG, WebP, GIF, BMP, TIFF) to apply duotone effect
primaryColor	color	No	Primary color for the duotone gradient (R,G,B values)
secondaryColor	color	No	Secondary color for the duotone gradient (R,G,B values)
mode	select	No	—
format	select

MCP integration

Add this tool to your Model Context Protocol server so AI agents can list and call it.

Server configuration

Add this block to your MCP client configuration:

mcp.json

{
  "mcpServers": {
    "elysiatools-image-duotone": {
      "name": "image-duotone",
      "description": "Apply duotone effect that maps image colors to two-color gradient for artistic effect",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=image-duotone",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

List available tools

After connecting to the SSE endpoint, list the exposed tools:

tools/list

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/list"
}

Call this tool

Invoke the tool by its id, passing arguments built from its parameters:

tools/call

{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "tools/call",
  "params": {
    "name": "image-duotone",
    "arguments": {
  "imageFile": "https://example.com/file.ext",
  "primaryColor": "#646464",
  "secondaryColor": "#000064",
  "mode": "classic",
  "format": "original",
  "quality": 95
}
  }
}

Chain multiple tools in one session with a comma-separated toolId list, e.g. /mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp (max 20).

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