Image Gaussian Blur

Apply Gaussian blur kernel for smooth noise reduction and image softening with precise control

file· File resultOpen tool

Quick start

Call this tool from your code in three languages.

cURL

# 1) Request a presigned URL → returns { uploadUrl, storageKey }
curl -X POST 'https://api.elysiatools.com/api/upload/presign/image-gaussian' \
  -H 'Content-Type: application/json' \
  -d '{"filename":"imageFile.ext","contentType":"application/octet-stream","size":12345}'

# 2) PUT the file bytes directly to the presigned uploadUrl
curl -X PUT '<presigned uploadUrl>' \
  --data-binary @/path/to/file.ext

# 3) Call the tool, passing the returned storageKey for each file field
curl -X POST 'https://api.elysiatools.com/en/api/tools/image-gaussian' \
  -F 'imageFile=uploads/2026/01/01/your-tool-1700000000000-abc123.ext' \
  -F 'sigma=2' \
  -F 'kernelSize=5' \
  -F 'iterations=1' \
  -F 'outputMode=normal'

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-gaussian

Parameters

Name	Type	Required	Description
imageFile	fileupload required	Yes	Image to apply Gaussian blur
sigma	number	No	Standard deviation for Gaussian distribution. Higher = more blur
kernelSize	select	No	Theoretical kernel size for Gaussian calculation. Sharp uses optimized algorithms internally.
iterations	number	No	Number of times to apply Gaussian blur. More iterations = stronger effect
outputMode	select	No	Additional processing on the blurred output

File-type parameters must be uploaded first via POST /upload/image-gaussian, then the returned filePath is passed to the corresponding file field.

Response format

File result

JSON

{
  "filePath": "/public/processing/randomid.ext",
  "fileName": "output.ext",
  "contentType": "application/octet-stream",
  "size": 1024,
  "metadata": {
    "key": "value"
  },
  "error": "Error message (optional)",
  "message": "Notification message (optional)"
}

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-gaussian": {
      "name": "image-gaussian",
      "description": "Apply Gaussian blur kernel for smooth noise reduction and image softening with precise control",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=image-gaussian",
      "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-gaussian",
    "arguments": {
  "imageFile": "https://example.com/file.ext",
  "sigma": 2,
  "kernelSize": "5",
  "iterations": 1,
  "outputMode": "normal"
}
  }
}

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).

File parameters accept a public file URL only (https://…). Local paths, data: URIs, and Base64 strings are not supported.

Questions or issues? Contact [email protected]