Authenticator App MCP Server

The Authenticator App MCP Server solves a common friction point for developers building AI‑powered workflows: secure, automated access to two‑factor authentication (2FA) codes and passwords. In many modern environments, logging into services requires a one‑time code that is generated on a separate device or application. Manually retrieving and entering these codes defeats the purpose of automation, especially when an AI assistant is meant to perform end‑to‑end tasks such as web scraping, data entry, or continuous integration pipelines. This server bridges that gap by exposing the Authenticator App’s credential store to AI agents in a safe, token‑based manner.

At its core, the server offers a lightweight MCP endpoint that accepts requests from an AI client and returns the requested 2FA code or password for a specified account. The communication is encrypted and authenticated via an access token generated in the desktop Authenticator App. Once a client has configured this server, any AI assistant—whether it’s running in Cursor’s agent mode, Smithery, or another MCP‑compatible platform—can simply ask for a code and receive it instantly. The server then hands the value to the agent, which can feed it into a login form or API call without exposing credentials to the broader network.

Key capabilities include:

• Secure token‑based authentication that limits access to a single user’s credentials.
• Granular request handling, allowing retrieval of either time‑based one‑time passwords (TOTP) or stored passwords.
• Seamless integration with existing MCP clients through a simple configuration entry, making it plug‑and‑play for developers.
• Cross‑platform support via the Authenticator App’s desktop version on Windows, macOS, and Linux, ensuring that the MCP server can run locally regardless of operating system.

Typical use cases span automated login for continuous deployment scripts, AI‑driven web automation that needs to bypass 2FA gates, or building a personal assistant that can manage credentials on behalf of the user without compromising security. Because the server never stores or logs the raw codes, it preserves the integrity of the 2FA process while giving AI agents the convenience they need.

In practice, a developer adds the MCP server to their client’s configuration file, generates an access token in the Authenticator App, and then writes a prompt such as “Get my GitHub 2FA code.” The AI agent forwards this request to the MCP server, which responds with the current TOTP. The assistant can then automatically fill in the login form or call an API, completing the authentication step entirely within the AI workflow. This tight coupling of security and automation is what makes the Authenticator App MCP Server a standout addition to any AI‑enabled development environment.