Loopsy: Open-Source Tool for Remote Terminal and AI Agent Control

Loopsy is a self-hosted, open-source tool that enables remote terminal access and AI agent control across machines. It allows users to control terminals like Claude Code, Cursor, or Codex from a phone via a Cloudflare Workers relay, with no port forwarding or VPN required. The system uses outbound WebSockets and HMAC-signed pair tokens for secure connections. It supports full PTY, ANSI, scrollback, resize, persistent sessions, and voice input via Web Speech API. For LAN agent-to-agent communication, daemons discover each other via mDNS and pair using ECDH (P-256) with a 6-digit SAS code. The MCP server exposes tools for session management, file transfer, and key/value state sharing. The threat model acknowledges that the relay can read terminal content; end-to-end encryption is planned for v1.1. Auto-approve for sessions defaults off and requires macOS password. The project includes a comprehensive security audit with 23 findings, 20 closed. It is released under Apache 2.0 license.