Data Anonymization for AI Workflows
Stop sending real names, emails, and personal data to AI models. Our MCP Server automatically detects and replaces PII in your prompts—then restores it in the response.
John Smith (john@acme.com)
and Sarah Miller..."
[PERSON_1] ([EMAIL_1])
and [PERSON_2]..."
What is Anonymize.dev?
A privacy layer for developers who use AI tools like Claude, Cursor, or ChatGPT
The Problem
When you use AI coding assistants, you often paste code, logs, or documents containing real customer data—names, emails, API keys, database entries.
That data goes to external servers. Even with good intentions, it's a GDPR risk, a security risk, and a trust issue with your users.
The Solution
Anonymize.dev sits between you and the AI. It automatically detects 50+ types of personal data (names, emails, phone numbers, credit cards, IBANs, IPs...) and replaces them with tokens.
The AI sees [PERSON_1] instead of "John Smith". When the response comes back, we restore the original values. Zero data leakage.
Works with:
Built for Developer Workflows
We detect what matters in your code, logs, and configs
Secrets & Credentials
API_KEY
SSH_KEY
JWT_TOKEN
AWS_SECRET
DATABASE_URL
OAUTH_TOKEN
PRIVATE_KEY
CLIENT_SECRET
Infrastructure & Network
IP_ADDRESS
MAC_ADDRESS
HOSTNAME
URL
FILE_PATH
CONTAINER_ID
Customer PII in Your Data
PERSON
EMAIL
PHONE
ADDRESS
CREDIT_CARD
IBAN
SSN
PASSPORT
Define Your Own Entities
Create custom patterns for your specific use cases: internal user IDs, project codes, proprietary identifiers.
// Your custom regex pattern
CUSTOMER_ID: /CUS-[A-Z0-9]{8}/g
Developer Tools
Multiple integration options for your privacy workflow
MCP Server
Privacy shield for Claude Desktop and Cursor IDE. Automatically intercepts and protects PII in your AI prompts.
Learn more
Desktop App
Bulk document processing with drag-and-drop. Files stay on your device—only extracted text is analyzed.
Download free
Office Add-in
Anonymize directly in Word, Excel, and PowerPoint. Select text, click protect, done.
Get add-inHow MCP Server Works
Transparent privacy protection in your AI workflow
You Write a Prompt
"Review the contract for John Smith (john@acme.com)"
MCP Server Anonymizes
"Review the contract for [PERSON_1] ([EMAIL_1])"
PII detected and replaced with tokens. Original values stored securely.
AI Processes Safely
Claude/ChatGPT only sees anonymized data. No real PII ever leaves your machine.
Response with Real Data
"The contract for John Smith includes..."
Tokens replaced with original values. You see the complete response.
Quick Start
Get protected in under a minute
{
"mcpServers": {
"anonymize": {
"command": "npx",
"args": ["-y", "@anonym-legal/mcp-server"],
"env": {
"ANONYM_API_KEY": "your-api-key"
}
}
}
}
Add this to your claude_desktop_config.json or Cursor settings
Simple Pricing
Token-based billing. Pay for what you process.
Ready to protect your data?
Start with our free tier. Upgrade when you need more.