JSON to Excel MCP by WTSolutions

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Introduction

The JSON to Excel MCP (Model Context Protocol) provides a standardized interface for converting JSON data into CSV format string using the Model Context Protocol. This MCP implementation offers two specific tools for data conversion:

- json_to_excel_mcp_from_data: Converts JSON data string into CSV format.
- json_to_excel_mcp_from_url: Converts JSON file from a provided URL (.json format) into CSV format string.

JSON to Excel MCP is part of JSON to Excel toolkit by WTSolutions:
JSON to Excel Web App: Convert JSON to Excel directly in Web Browser.
JSON to Excel Excel Add-in: Convert JSON to Excel in Excel, works with Excel environment seamlessly.
JSON to Excel API: Convert JSON to Excel by HTTPS POST request.
<mark>JSON to Excel MCP Service: Convert JSON to Excel by AI Model MCP SSE/StreamableHTTP request.</mark> (<-- You are here.)

Server Config

Available MCP Servers (SSE and Streamable HTTP):

Using SSE

Transport: SSE

URL: https://mcp2.wtsolutions.cn/sse

Server Config JSON:

{
  "mcpServers": {
    "json2excelsse": {
      "type": "sse",
      "url": "https://mcp2.wtsolutions.cn/sse"
    }
  }
}

Using Streamable HTTP

Transport: Streamable HTTP

URL: https://mcp2.wtsolutions.cn/mcp

Server Config JSON:

{
  "mcpServers": {
    "json2excelmcp": {
      "type": "streamableHttp",
      "url": "https://mcp2.wtsolutions.cn/mcp"
    }
  }
}

MCP Tools

json_to_excel_mcp_from_data

Converts JSON data string into CSV format string.

Parameters

| Parameter | Type | Required | Description |
|-----------|--------|----------|-----------------------------------------------------------------------------|
| data | string | Yes | JSON data string to be converted to CSV. Must be a valid JSON array or object. |

> Note:
> - Input data must be a valid JSON string. Validator available at JSON to Excel Web App.
> - If the JSON is an array of objects, each object will be treated as a row in the CSV.
> - If the JSON is a single object, it will be converted into a CSV with key-value pairs.
> - The CSV will include headers based on the keys in the JSON objects.
> - This tool returns CSV-formatted data that can be easily converted/imported to Excel.

Example Prompt 1:

Convert the following JSON data into CSV format:

[
  {"Name": "John Doe", "Age": 25, "IsStudent": false},
  {"Name": "Jane Smith", "Age": 30, "IsStudent": true}
]

Example Prompt 2:

Convert the following JSON object into CSV format:

{
  "Name": "John Doe",
  "Age": 25,
  "IsStudent": false,
  "Courses": ["Math", "Science"]
}

json_to_excel_mcp_from_url

Converts JSON data from a provided URL into Excel data.

Parameters

| Parameter | Type | Required | Description |
|-----------|--------|----------|--------------------------------------------------|
| url | string | Yes | URL pointing to a JSON file (.json) |

> Note:
> - The url should be publicly accessible.
> - The JSON file should be in .json format.
> - The JSON file should contain a valid JSON array or object. Validator available at JSON to Excel Web App.
> - If the JSON is an array of objects, each object will be treated as a row in the CSV.
> - If the JSON is a single object, it will be converted into a CSV with key-value pairs.
> - This tool returns CSV-formatted data that can be easily converted/imported to Excel.

Example Prompt 1

Convert JSON file to Excel, file URL: https://mcp.wtsolutions.cn/example.json

Example Prompt 2

(applicable only when you do not have a URL and working with online AI LLM)

I've just uploaded one .json file to you, please extract its URL and send it to MCP tool 'json_to_excel_mcp_from_url', for JSON to Excel conversion.

Response Format

The MCP tools return a JSON object with the following structure:

| Field | Type | Description |
|----------|---------|-------------------------------------------------------------------------------------------------------------------------------------------|
| isError | boolean | Indicates if there was an error processing the request |
| msg | string | 'success' or error description |
| data | string | Converted CSV data string, '' if there was an error. This CSV data can be easily imported into Excel. |

Example Success Response

{
  "content": [{
    "type": "text",
    "text": "{\"isError\":false,\"msg\":\"success\",\"data\":\"Name,Age,IsStudent\nJohn Doe,25,false\nJane Smith,30,true\"}"
  }]
}

Above is the response from MCP tool, and in most cases your LLM should interpret the response and present you with a JSON object, for example as below.
> Note, different LLM models may have different ways to interpret the JSON object, so please check if the JSON object is correctly interpreted by your LLM model.

{
  "isError": false,
  "msg": "success",
  "data": "Name,Age,IsStudent\nJohn Doe,25,false\nJane Smith,30,true"
}

Example Failed Response

{
  "content": [{
    "type": "text",
    "text": "{\"isError\": true, \"msg\": \"Invalid JSON format\", \"data\": \"\"}"
  }]
}

Above is the response from MCP tool, and in most cases your LLM should interpret the response and present you with a JSON object, for example as below. > Note, different LLM models may have different ways to interpret the JSON object, so please check if the response is correctly interpreted by your LLM model.

{
  "isError": true,
  "msg": "Invalid JSON format",
  "data": ""
}

or it is also possible that your LLM would say "Invalid JSON format, please provide a valid JSON string" to you.

Data Type Handling

The API automatically handles different data types in JSON:

- Numbers: Converted to numeric values in CSV
- Booleans: Converted to 'true'/'false' strings
- Strings: Escaped and quoted if necessary
- Arrays: Converted to JSON.stringify array string
- Objects: Converted to JSON.stringify object string

Error Handling

The MCP returns descriptive error messages for common issues:

- Invalid JSON format: When input data is not a valid JSON string
- Empty JSON data: When input data is an empty JSON string
- Network Error when fetching file: When there's an error downloading the file from the provided URL
- File not found: When the file at the provided URL cannot be found
- Server Internal Error: When an unexpected error occurs

Service Agreement and Privacy Policy

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Pricing

Free for now.

Donation

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