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proton-mcp

MCP server for the Proton privacy suite — Mail, Pass, Drive, Calendar, and VPN. 36 tools for Claude and other MCP-compatible AI agents.

Built by Scott Jorgensen and Jorgenclaw (AI agent) for the jorgenclaw.ai sovereignty stack.

Requirements

  • Proton Mail Bridge — running on the host (provides IMAP/SMTP access to Proton Mail)

  • pass-cliProton Pass CLI for password manager tools

  • Node.js 22+

Installation

git clone https://github.com/jorgenclaw/proton-mcp.git
cd proton-mcp
npm install

Create a .env file from the example:

cp .env.example .env
# Edit .env with your Proton Bridge credentials

Configuration

PROTON_BRIDGE_HOST=127.0.0.1
PROTON_BRIDGE_IMAP_PORT=1143
PROTON_BRIDGE_SMTP_PORT=1025
PROTON_BRIDGE_USER=your@proton.me
PROTON_BRIDGE_PASS=your-bridge-password
PROTON_BRIDGE_FROM=your@proton.me

The Bridge password is found in Proton Bridge → Settings → your account → IMAP/SMTP password (this is NOT your Proton account password).

Usage

With Claude Desktop

Add to your Claude Desktop config (~/.config/claude/claude_desktop_config.json):

{
  "mcpServers": {
    "proton": {
      "command": "node",
      "args": ["/path/to/proton-mcp/index.js"],
      "env": {
        "PROTON_BRIDGE_HOST": "127.0.0.1",
        "PROTON_BRIDGE_IMAP_PORT": "1143",
        "PROTON_BRIDGE_SMTP_PORT": "1025",
        "PROTON_BRIDGE_USER": "your@proton.me",
        "PROTON_BRIDGE_PASS": "your-bridge-password",
        "PROTON_BRIDGE_FROM": "your@proton.me"
      }
    }
  }
}

With NanoClaw

Mount as an MCP server in the container configuration. See the NanoClaw docs for MCP server setup.

Standalone

node --env-file=.env index.js

The server communicates via MCP stdio protocol.

Tools (36)

Mail (16 tools)

Tool

Description

mail__get_unread

Get unread message count and summaries

mail__list_messages

List recent messages from inbox

mail__get_message

Get full message content by ID

mail__search_messages

Search across INBOX, Sent, Drafts, Archive

mail__get_thread

Get all messages in a thread

mail__send_message

Send a new email

mail__reply_message

Reply to a message (preserves threading)

mail__forward_message

Forward a message to another recipient

mail__mark_message

Mark as read/unread

mail__star_message

Star/unstar a message

mail__delete_message

Permanently delete a message

mail__move_message

Move to a different folder

mail__list_folders

List all mail folders

mail__list_folder_messages

List messages in a specific folder

mail__get_attachments

Download message attachments

mail__get_thread

Reconstruct full conversation thread

Pass (9 tools)

Tool

Description

pass__list_vaults

List available Proton Pass vaults

pass__list_items

List items in a vault (no passwords shown)

pass__search_items

Search items by keyword (no passwords shown)

pass__get_item

Get full credential (username, password, URLs)

pass__create_item

Store a new login credential

pass__update_item

Update an existing credential

pass__trash_item

Move an item to trash

pass__get_totp

Generate current TOTP code for 2FA

pass__generate_password

Generate a secure random password

Drive (6 tools)

Tool

Description

drive__list

List files and folders

drive__download

Download a file

drive__upload

Upload a file

drive__upload_folder

Upload an entire folder

drive__mkdir

Create a directory

drive__delete

Delete a file or folder

Calendar (5 tools)

Tool

Description

calendar__list_events

List upcoming events

calendar__get_event

Get event details

calendar__create_event

Create a new event

calendar__update_event

Update an existing event

calendar__delete_event

Delete an event

VPN (1 tool)

Tool

Description

vpn__status

Check Proton VPN connection status

Security Notes

  • Proton Bridge password is NOT your Proton account password — it's a Bridge-specific IMAP/SMTP password

  • pass__list_items and pass__search_items never expose passwords or TOTP seeds

  • Only pass__get_item returns the actual password — use it deliberately

  • The .env file contains credentials — keep it out of version control

License

MIT — see LICENSE

-
security - not tested
A
license - permissive license
-
quality - not tested

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