Authenticator App MCP Server
A secure server that enables AI agents to access 2FA codes and passwords from the Authenticator App, allowing them to assist with automated login processes while maintaining security.
What is Authenticator App MCP Server?
Authenticator App MCP Server is a Model Context Protocol (MCP) server that allows AI assistants like Claude, Cursor, and VS Code to secure server that enables ai agents to access 2fa codes and passwords from the authenticator app, allowing them to assist with automated login processes while maintaining security.
A secure server that enables AI agents to access 2FA codes and passwords from the Authenticator App, allowing them to assist with automated login processes while maintaining security.
This server falls under the Security category on MCPgee, the world's largest MCP server directory with 33,000+ servers.
Features
- A secure server that enables AI agents to access 2FA codes a
Use Cases
Maintainer
Works with
Installation
Manual Installation
npx authenticator-app-mcp-serverConfiguration
Configuration Details
claude_desktop_config.json
Performance
Response Metrics
Resource Usage
How to Set Up and Use Authenticator App MCP Server
Authenticator App MCP Server is a secure bridge between AI agents and the Authenticator App desktop client, allowing agents to retrieve TOTP two-factor authentication codes and stored passwords on demand without requiring the user to manually look them up. The server communicates with the locally installed Authenticator App over a token-authenticated channel, so credentials never leave the local machine. Security-conscious developers and power users use it to enable autonomous login workflows where the agent handles both password retrieval and 2FA code entry during automated browser sessions.
Prerequisites
- The Authenticator App desktop client installed (available for Windows, macOS, and Ubuntu/Debian from the official website)
- An access token generated in the Authenticator App (Settings > MCP Server — copy the token immediately as it is shown only once)
- An MCP-compatible client such as Claude Desktop
- npx (Node.js 16+) available in PATH
Install and configure the Authenticator App desktop client
Download and install the Authenticator App desktop client for your platform from the official website. Import your existing 2FA accounts and passwords into the app.
Generate an MCP access token
In the Authenticator App desktop client, navigate to Settings > MCP Server. Toggle the MCP Server switch ON. The app will display a one-time access token — copy it immediately as it cannot be retrieved again.
Add the MCP server to Claude Desktop config (macOS/Linux)
Edit claude_desktop_config.json and add the Authenticator MCP entry. Pass the access token you copied as a command-line argument.
{
"mcpServers": {
"Authenticator App MCP": {
"command": "npx",
"args": ["-y", "authenticator-mcp", "--access-token=YOUR-KEY-HERE"]
}
}
}Add the MCP server to Claude Desktop config (Windows)
On Windows, use cmd as the command so npx runs correctly in the Windows command environment.
{
"mcpServers": {
"Authenticator App MCP": {
"command": "cmd",
"args": ["/c", "npx", "-y", "authenticator-mcp", "--access-token=YOUR-KEY-HERE"]
}
}
}Restart Claude Desktop and test credential retrieval
Restart Claude Desktop so it picks up the new server. Ask Claude to retrieve a 2FA code for a specific service to verify the connection to the Authenticator App is working.
Authenticator App MCP Server Examples
Client configuration
macOS/Linux claude_desktop_config.json entry for the Authenticator MCP server using npx and an access token argument.
{
"mcpServers": {
"Authenticator App MCP": {
"command": "npx",
"args": ["-y", "authenticator-mcp", "--access-token=YOUR-ACCESS-TOKEN"]
}
}
}Prompts to try
Example prompts for retrieving 2FA codes and passwords through the MCP server during automated workflows.
- "Retrieve the current 2FA code for my GitHub account"
- "Get my password for the account associated with google.com"
- "Fetch the TOTP code for my AWS root account so I can complete login"
- "What is the 2FA code for my Cloudflare account right now?"Troubleshooting Authenticator App MCP Server
Server returns 'invalid access token' or authentication error
The access token is single-use for display — once you navigate away from the Settings screen, you cannot retrieve the same token again. Generate a new token by toggling the MCP Server off and back on in the Authenticator App settings.
Authenticator App is not running when the agent tries to fetch a code
The MCP server requires the Authenticator App desktop client to be running on the same machine. The app must be open (it can run in the system tray) for the MCP server to retrieve codes. Configure the app to start with your operating system.
npx takes too long to start or fails offline
The access token can alternatively be passed as an environment variable. Change your config to use: "env": { "AUTHENTICATOR_ACCESS_TOKEN": "YOUR-KEY" } and remove the --access-token argument. Also consider caching the npx download by pre-installing with: npm install -g authenticator-mcp
Frequently Asked Questions about Authenticator App MCP Server
What is Authenticator App MCP Server?
Authenticator App MCP Server is a Model Context Protocol (MCP) server that secure server that enables ai agents to access 2fa codes and passwords from the authenticator app, allowing them to assist with automated login processes while maintaining security. It connects AI assistants to external tools and data sources through a standardized interface.
How do I install Authenticator App MCP Server?
Follow the installation instructions on the Authenticator App MCP Server GitHub repository. Clone the repo, install dependencies, and add the server config to your AI client.
Which AI clients work with Authenticator App MCP Server?
Authenticator App MCP Server works with all major MCP-compatible AI clients including Claude Desktop, Claude Code, Cursor, VS Code (GitHub Copilot), Windsurf, and Cline.
Is Authenticator App MCP Server free to use?
Yes, Authenticator App MCP Server is open source and available under the MIT License license. You can use it freely in both personal and commercial projects.
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