Text Processing

Sensitive Data Masker

Automatically detect and mask sensitive information like phone numbers, emails, ID cards, and bank cards in text

json· JSON resultOpen tool

Quick start

Call this tool from your code in three languages.

cURL

curl -X POST 'https://api.elysiatools.com/en/api/tools/sensitive-data-masker' \
  -H 'Content-Type: application/json' \
  -d '{"text":"Paste text containing sensitive data (phones, emails, ID cards, bank cards)...","maskPhone":true,"maskEmail":true,"maskIdCard":true,"maskBankCard":true,"preserveDigits":4,"maskChar":"*"}'

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/sensitive-data-masker

Parameters

Name	Type	Required	Description
text	textarea	Yes	—
maskPhone	checkbox	No	Detect and mask phone numbers (China, US, and international formats)
maskEmail	checkbox	No	Detect and mask email addresses
maskIdCard	checkbox	No	Detect and mask ID card numbers (Chinese ID, US SSN, etc.)
maskBankCard	checkbox	No

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-sensitive-data-masker": {
      "name": "sensitive-data-masker",
      "description": "Automatically detect and mask sensitive information like phone numbers, emails, ID cards, and bank cards in text",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=sensitive-data-masker",
      "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": "sensitive-data-masker",
    "arguments": {
  "text": "Paste text containing sensitive data (phones, emails, ID cards, bank cards)...",
  "maskPhone": true,
  "maskEmail": true,
  "maskIdCard": true,
  "maskBankCard": true,
  "preserveDigits": 4,
  "maskChar": "*"
}
  }
}

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]

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