Authenticator App MCP Server

What is Authenticator App MCP Server about?

Enables AI agents to retrieve 2FA codes and passwords from the Authenticator App, allowing automated login flows without exposing credentials.

How to use Authenticator App MCP Server?

1. Install the Authenticator App (desktop version) on your machine.
2. Generate an MCP access token in the app’s Settings → MCP Server section.
3. Add the server to your AI client configuration (JSON example below) or set the AUTHENTICATOR_ACCESS_TOKEN environment variable.
4. In the AI chat interface, ask the agent to fetch a 2FA code or password for a specific site; the server returns the credential securely.

Key Features

• Secure retrieval of 2FA codes and passwords via a trusted MCP server.
• Simple configuration using an npx command.
• Cross‑platform support (macOS, Linux, Windows).
• Works with any AI client that supports MCP servers (e.g., Cursor, Smithery).
• Minimal exposure: access token shown only once.

Use Cases

• Automating login steps in scripting or browser automation tools.
• Allowing AI assistants to fill authentication fields during a session.
• Centralizing credential access for multiple AI agents while keeping secrets safe.
• Reducing manual entry of 2FA codes when juggling many accounts.

FAQ

Q: Do I need to install any server-side software? A: No. The server runs as a lightweight Node.js process triggered via npx.

Q: How is the access token protected? A: It is generated once in the Authenticator App and should be stored securely (environment variable or config file). The server never logs the token.

Q: Can I run the server on a remote machine? A: The server is intended to run locally alongside the Authenticator App, as it needs direct access to the app’s credential store.

Q: What happens if the token expires? A: Generate a new token from the app’s Settings → MCP Server section and update your configuration.

Q: Is this compatible with other 2FA apps? A: The MCP server is specific to the Authenticator App · 2FA provided by FirstOrder AI.

A secure MCP (Model Context Protocol) server that enables AI agents to interact with the Authenticator App. It provides seamless access to 2FA codes and passwords, allowing AI agents to assist with automated login processes while maintaining security. This tool bridges the gap between AI assistants and secure authentication, making it easier to manage your credentials across different platforms and websites.

How it works

1. Open your AI agent's integrated chat interface (such as Cursor's agent mode).
2. Ask AI agent to retrieve your 2FA code or password for your desired website and account.
3. AI agent will securely fetch these credentials, then can utilize them to automate your login process.

This MCP server is specifically designed for use with Authenticator App · 2FA.

Getting Started

Many AI clients use a configuration file to manage MCP servers.

The authenticator-mcp tool can be configured by adding the following to your configuration file.

NOTE: You will need to create a Authenticator App access token to use this server. Instructions on how to create a Authenticator App access token can be found here.

MacOS / Linux

{
  "mcpServers": {
    "Authenticator App MCP": {
      "command": "npx",
      "args": ["-y", "authenticator-mcp", "--access-token=YOUR-KEY"]
    }
  }
}

Windows

{
  "mcpServers": {
    "Authenticator App MCP": {
      "command": "cmd",
      "args": ["/c", "npx", "-y", "authenticator-mcp", "--access-token=YOUR-KEY"]
    }
  }
}

Or you can set AUTHENTICATOR_ACCESS_TOKEN in the env field.

Install Authenticator App · 2FA Desktop version

Creating an Access Token

1. Launch the desktop version of Authenticator App · 2FA.
2. Navigate to Settings and locate the MCP Server section.
3. Enable the MCP Server by toggling it ON, then proceed to generate your access token.

Please note that the access token will only be displayed once. Be sure to copy it immediately and add it to your MCP client configuration.