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Presidio MCP Server

Exposes anonymize and deanonymize capabilities via MCP tools and FastAPI endpoints with local storage.

Installation

Add the following to your MCP client configuration file.

Configuration

{
  "mcpServers": {
    "apasupul-mcp_presidio_server": {
      "command": "python",
      "args": [
        "mcp_server/server.py"
      ]
    }
  }
}

You run and use the Presidio MCP Server to anonymize and deanonymize messages using a local stdio MCP server or the FastAPI endpoints. This setup lets you create anonymized mappings per session and later reverse them, while keeping mappings stored locally for privacy-conscious workflows.

How to use

You start a session to obtain a session identifier, then send messages you want anonymized. The server returns anonymized content and stores the mapping for your session, which you can later deanonymize by submitting the anonymized text along with the session identifier.

To operate locally, you run the stdio MCP server and point your MCP client to that local command. If you prefer the HTTP API, you start the FastAPI server and access the defined endpoints to create sessions, anonymize messages, and deanonymize content.

How to install

Prerequisites you need before installation: a Python 3 environment and access to the internet to install dependencies.

python -m venv .venv && source .venv/bin/activate  # on Windows: .venv\Scripts\activate
pip install -r requirements.txt
uvicorn app.main:app --reload
```

```bash
python mcp_server/server.py

Additional notes and configuration

Storage is implemented with SQLite at app/data.db, containing tables for sessions and mappings. Custom recognition patterns mirror the provided codebase; you can extend Presidio recognizers as needed. Placeholders use the format <<ENTITY_#>> and can be reversed per session_id.

Available tools

session_management

Create and manage sessions to group anonymized mappings and link them to a session_id.

anonymize_messages

Process incoming messages to replace sensitive content with reversible placeholders and store the mapping for the session.

deanonymize_text

Restore original content from anonymized text using the session_id and stored mappings.