Format Conversion

XLSX CSV Batch Converter

Batch convert CSV/TSV to XLSX or convert XLSX back to CSV/TSV with delimiter and encoding handling

file· File resultOpen tool

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/xlsx-csv-batch-converter' \
  -F 'file=@/path/to/sourceFiles.ext'

# 2) Call the tool with the returned filePath values
curl -X POST 'https://api.elysiatools.com/en/api/tools/xlsx-csv-batch-converter' \
  -F 'sourceFiles=/public/samples/csv/sample-utf8.csv,/public/samples/csv/sample-tab.tsv' \
  -F 'mode=auto' \
  -F 'sourceEncoding=auto' \
  -F 'outputEncoding=utf-8-bom' \
  -F 'inputDelimiter=auto' \
  -F 'outputDelimiter=,' \
  -F 'sheetName=Sheet1' \
  -F 'includeHeader=true' \
  -F 'alwaysZip=true'

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/xlsx-csv-batch-converter

Parameters

Name	Type	Required	Description
sourceFiles	fileupload required	Yes	—
mode	select	Yes	—
sourceEncoding	select	No	—
outputEncoding	select	No	—
inputDelimiter	select	No	—
outputDelimiter	select	No	—
sheetName	text	No	—
includeHeader	checkbox	No	—
alwaysZip	checkbox	No	—

File-type parameters must be uploaded first via POST /upload/xlsx-csv-batch-converter, 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-xlsx-csv-batch-converter": {
      "name": "xlsx-csv-batch-converter",
      "description": "Batch convert CSV/TSV to XLSX or convert XLSX back to CSV/TSV with delimiter and encoding handling",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=xlsx-csv-batch-converter",
      "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": "xlsx-csv-batch-converter",
    "arguments": {
  "sourceFiles": [
    "/public/samples/csv/sample-utf8.csv",
    "/public/samples/csv/sample-tab.tsv"
  ],
  "mode": "auto",
  "sourceEncoding": "auto",
  "outputEncoding": "utf-8-bom",
  "inputDelimiter": "auto",
  "outputDelimiter": ",",
  "sheetName": "Sheet1",
  "includeHeader": true,
  "alwaysZip": true
}
  }
}

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]