Field-Level Data Decryptor

Decrypt specific fields in CSV data using various decryption methods to restore encrypted information

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Quick start

Call this tool from your code in three languages.

cURL

curl -X POST 'https://api.elysiatools.com/en/api/tools/field-decryptor' \
  -H 'Content-Type: application/json' \
  -d '{"csvData":"Enter your encrypted CSV data...\n\nExample:\nName,Email,Phone,SSN,Salary\nJohn Doe,am9uZW1haWwuY29t,555-0123,MTIzLTQ1LTY3ODk=,50000\nJane Smith,amFuZUBlbWFpbC5jb20=,555-0456,Ojk4Ny02NS00MzIx,60000\nBob Wilson,Ym9iQGVtYWlsLmNvbQ==,555-0789,NDU2LTc4LTkwMTI=,45000","decryptionMethod":"base64","selectedFields":"Comma-separated field names (e.g., Email,Phone,SSN). Leave empty to decrypt all fields.","decryptionKey":"Enter decryption key (required for AES decryption)","caesarShift":"3","preserveStructure":true,"exportFormat":"csv","decryptedOnly":false}'

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/field-decryptor

Parameters

Name	Type	Required	Description
csvData	textarea	Yes	—
decryptionMethod	select	Yes	—
selectedFields	text	No	Specify which CSV columns to decrypt. If empty, all fields will be decrypted by default.
decryptionKey	text	No	Only required for AES decryption method. Use the same key that was used for encryption.
caesarShift	number	No	Number of positions to shift back for Caesar cipher decipher (1-25)
preserveStructure	checkbox	No	Keep CSV headers and maintain original data structure
exportFormat	select	Yes	—
decryptedOnly	checkbox	No	Skip detailed analysis and only output decrypted data

Response format

Text result

JSON

{
  "result": "Processed text content",
  "error": "Error message (optional)",
  "message": "Notification message (optional)",
  "metadata": {
    "key": "value"
  }
}

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-field-decryptor": {
      "name": "field-decryptor",
      "description": "Decrypt specific fields in CSV data using various decryption methods to restore encrypted information",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=field-decryptor",
      "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": "field-decryptor",
    "arguments": {
  "csvData": "Enter your encrypted CSV data...\n\nExample:\nName,Email,Phone,SSN,Salary\nJohn Doe,am9uZW1haWwuY29t,555-0123,MTIzLTQ1LTY3ODk=,50000\nJane Smith,amFuZUBlbWFpbC5jb20=,555-0456,Ojk4Ny02NS00MzIx,60000\nBob Wilson,Ym9iQGVtYWlsLmNvbQ==,555-0789,NDU2LTc4LTkwMTI=,45000",
  "decryptionMethod": "base64",
  "selectedFields": "Comma-separated field names (e.g., Email,Phone,SSN). Leave empty to decrypt all fields.",
  "decryptionKey": "Enter decryption key (required for AES decryption)",
  "caesarShift": "3",
  "preserveStructure": true,
  "exportFormat": "csv",
  "decryptedOnly": false
}
  }
}

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).

Questions or issues? Contact [email protected]