JSON Unflattener

Convert flattened key-value pairs back to nested JSON objects with support for different key formats and data type inference

Flattened Data Input *

Input Format *

Key Format *

Key Delimiter

Data Type Inference *

Array Detection *

Merge Strategy for Conflicts *

Preserve Empty/Null Values

API Documentation

Request Endpoint

POST /en/api/tools/json-unflattener

Request Parameters

Parameter Name	Type	Required	Description
dataInput	textarea	Yes	-
inputFormat	select	Yes	-
keyFormat	select	Yes	-
delimiter	text	No	-
typeInference	select	Yes	-
arrayMode	select	Yes	-
mergeStrategy	select	Yes	-
preserveEmpty	checkbox	No	-

Response Format

{
  "key": {...},
  "metadata": {
    "key": "value"
  },
  "error": "Error message (optional)",
  "message": "Notification message (optional)"
}

JSON Data: JSON Data

AI MCP Documentation

Add this tool to your MCP server configuration:

{
  "mcpServers": {
    "elysiatools-json-unflattener": {
      "name": "json-unflattener",
      "description": "Convert flattened key-value pairs back to nested JSON objects with support for different key formats and data type inference",
      "baseUrl": "https://elysiatools.com/mcp/sse?toolId=json-unflattener",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

You can chain multiple tools, e.g.: `https://elysiatools.com/mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp`, max 20 tools.

If you encounter any issues, please contact us at [email protected]