# 2FAA - Free Online 2FA Tools

> 2FAA is a free, open-source suite of two-factor authentication tools. Everything runs client-side in the browser — no server, no tracking, no account required.

## Tools

- [2FA Generator / Authenticator](https://2faa.app/totp): Manage TOTP secrets, generate 6-digit codes, one-click copy, QR code scanning. Works offline as a PWA.
- [Google Authenticator Import](https://2faa.app/import): Transfer 2FA accounts from Google Authenticator by scanning the export QR code. Decodes otpauth-migration:// protobuf format.
- [Chrome Extension](https://2faa.app/extension): Browser extension for auto-detecting 2FA input fields and one-click code fill. Manifest V3, fully local.
- [MCP Server](https://2faa.app/mcp): TOTP generation and verification for AI agents via Model Context Protocol. Install: `npx -y 2faa-mcp`

## Platform Setup Guides

- [Discord 2FA setup](https://2faa.app/guides/discord-2fa)
- [Epic Games / Fortnite 2FA](https://2faa.app/guides/epic-games-2fa)
- [GitHub 2FA setup](https://2faa.app/guides/github-2fa)
- [PayPal 2FA setup](https://2faa.app/guides/paypal-2fa)
- [Instagram 2FA](https://2faa.app/guides/instagram-2fa)
- [Spotify 2FA](https://2faa.app/guides/spotify-2fa)
- [Roblox 2FA](https://2faa.app/guides/roblox-2fa)
- [Twitch 2FA](https://2faa.app/guides/twitch-2fa)
- [Slack 2FA](https://2faa.app/guides/slack-2fa)
- [Amazon 2FA](https://2faa.app/guides/amazon-2fa)
- [Full guide index](https://2faa.app/guides)

## Concept & Comparison Pages

- [What is 2FA?](https://2faa.app/what-is-2fa) - Two-factor authentication explained in plain English.
- [2FA vs MFA](https://2faa.app/2fa-vs-mfa) - The exact difference between 2FA and MFA, when each applies.
- [Passkey vs 2FA](https://2faa.app/passkey-vs-2fa) - How passkeys compare to authenticator-app 2FA.
- [FAQ](https://2faa.app/faq) - 50+ questions on 2FA setup, recovery, and security.

## Developer Integration Guides

- [Laravel 2FA tutorial](https://2faa.app/developers/laravel-2fa) - Add TOTP 2FA to a Laravel app with pragmarx/google2fa.
- [WireGuard 2FA](https://2faa.app/developers/wireguard-2fa) - Practical approaches to layering 2FA onto WireGuard VPN.
- [Claude Code 2FA via MCP](https://2faa.app/developers/claude-2fa) - Let Claude generate TOTP codes during AI agent workflows.

## Chinese Pages (简体中文)

- [2FA 密钥生成器](https://2faa.app/zh/totp)
- [什么是 2FA？](https://2faa.app/zh/what-is-2fa)
- [常见问题](https://2faa.app/zh/faq)
- [从谷歌验证器导入](https://2faa.app/zh/import)

## Vietnamese Pages (Tiếng Việt)

- [Lấy mã 2FA online](https://2faa.app/vi/totp)
- [2FA là gì?](https://2faa.app/vi/what-is-2fa)
- [Câu hỏi thường gặp](https://2faa.app/vi/faq)
- [Nhập từ Google Authenticator](https://2faa.app/vi/import)

## API / Integration

- npm package: `2faa-mcp` — MCP server with `generate_totp` and `verify_totp` tools
- Works with Claude Code, Claude Desktop, Cursor, and any MCP-compatible AI agent
- Configuration: `{ "mcpServers": { "2faa": { "command": "npx", "args": ["-y", "2faa-mcp"] } } }`

## Key Facts

- 100% client-side, secrets never leave the user's device
- Compatible with Google Authenticator, Authy, Microsoft Authenticator, 1Password
- Supports RFC 6238 (TOTP) and RFC 4226 (HOTP)
- PWA with offline support
- Open source
- Website: https://2faa.app
- Contact: johncook@ad-piece.com