How to Use the Duo Security (Two-Factor Authentication API) MCP in Cline

Q: How does Cline interact with the Duo Security (Two-Factor Authentication API) MCP Server during development?

Cline uses the server to execute live API calls like preauth and auth. This lets the agent test your application's 2FA integration with real-world Duo payloads instead of static mock data.

Q: Can I manage MSP child accounts with Duo Security (Two-Factor Authentication API) in Cline using the MCP Server?

Yes. Cline can call listaccounts to retrieve your managed child accounts and use createaccount or deleteaccount to provision or decommission them based on your instructions.

Q: How does Cline handle failed 2FA prompts from Duo Security (Two-Factor Authentication API)?

When an auth call is rejected, Cline captures the error code returned by authstatus. It then analyzes your code's error handling block to ensure it handles the rejection gracefully.

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Setup Duo Security (Two-Factor Authentication API) with Cline

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Build and test 2FA flows in Cline

The `auth` tool sends live push notifications to test your application's 2FA integration during development. Cline connects to this MCP Server to trigger these prompts, letting you test your backend logic against real, live API responses. While writing your login controller, Cline runs `auth_status` to test how your system handles approved, denied, or timed-out pushes. It modifies your files, executes your test suite, and verifies the integration works without you having to manually trigger prompts on your phone every five seconds.

Interactive user lifecycle management

The `list_users` tool filters and retrieves active Duo user profiles directly from VS Code. You can point the agent to a list of inactive developers, and it will verify their status, then call `trash_users` to safely queue them for deletion. If you make a mistake and trash the wrong profile, Cline can immediately invoke `restore_users` to bring them back. It can also modify user metadata on the fly using `modify_user` based on your project configuration files.

Manage MSP billing and telephony allocations

The `get_billing_edition` tool audits the service tier of your managed accounts. Cline can run this alongside `get_telephony_credits` to audit your usage across multiple child accounts. When an account needs an upgrade or more tokens, Cline can execute `set_billing_edition` or `set_telephony_credits` to adjust their limits. This turns manual administrative tasks into swift, automated operations.

Setup guide

Set up Duo Security (Two-Factor Authentication API) MCP in Cline

Prerequisites

VS Code with Cline extension installed
Active Vinkius subscription with a valid endpoint token

1

Open Cline MCP settings

Click the Cline icon in the VS Code sidebar to open the Cline panel. Then click the MCP Servers icon (server stack) at the top-right corner of the panel.
2

Add a remote server

Click "Remote Servers" at the top, then click "Add Remote MCP". In the Name field, type duo-security-two-factor-authentication-api-mcp. In the URL field, paste your Vinkius endpoint: https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp. Get your token from cloud.vinkius.com.
3

Enable the server

After saving, the server appears in the Cline MCP panel. Toggle the switch to enable it. The status indicator turns green when the connection is live.
4

Start using tools

Return to the Cline chat and ask: "Check my latest Duo Security (Two-Factor Authentication API) refund status." Cline will discover the available tools and request your approval before invoking each one — giving you full control over every action.

Cline MCP Settings

{
  "mcpServers": {
    "duo-security-two-factor-authentication-api-mcp": {
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

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Common questions about Duo Security (Two-Factor Authentication API) MCP in Cline

Cline uses the server to execute live API calls like `preauth` and `auth`. This lets the agent test your application's 2FA integration with real-world Duo payloads instead of static mock data.

Yes. Cline can call `list_accounts` to retrieve your managed child accounts and use `create_account` or `delete_account` to provision or decommission them based on your instructions.

When an `auth` call is rejected, Cline captures the error code returned by `auth_status`. It then analyzes your code's error handling block to ensure it handles the rejection gracefully.

Yes. You can tell Cline to update a user's phone number or email, and it will execute `modify_user` to apply those changes to the Duo database instantly.

Completely safe. Your Duo usernames, phone numbers, and integration secrets are never sent to third-party endpoints. Cline communicates with the local MCP Server process using secure standard input/output, keeping your sensitive identity data isolated inside your workstation.

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