Ghostty's creator made an Agent GUI & it's quite good!
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Superlogical: https://superlogical.com
Mitchell's announcement post: https://mitchellh.com/writing/superlogical
Program status protocol (OSC 7501) write-up: https://mitchellh.com/writing/program-status-osc7501
In this video, I'll walk you through Rex, the new terminal from Superlogical, the company started by Mitchell Hashimoto, the creator of Ghostty. I installed the beta on my Mac, so I'll show you what it is and how it differs from Ghostty, how access, tabs, themes and the Lua config work, and what its rex command line can do. Then I'll cover how it works with coding agents like Claude Code, Codex, OpenCode and Pi, the built-in Tailscale remote support, what I like, what I don't like, and whether you should join the waitlist.
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Key Takeaways:
🔍 Rex is not Ghostty renamed: Ghostty stays a non-profit project, while Rex is a separate commercial product from Superlogical that shares the libghostty engine.
🚀 Rex is a terminal and a multiplexer in one app, with a background server that owns your shells, so closing the app doesn't kill your programs.
🧠 The hierarchy is server, sessions (projects), windows (tabs) and blocks (panes), and a block is a pane, not a Warp-style command output block.
👥 Rex Beta is invite-only through a waitlist, version 0.1.0, and Mac only for now, with browser-style tabs on top or in a sidebar, a command palette and around 40 built-in themes.
💻 The Lua config lives in dot config slash rex slash init dot lua, uses rex.bind for keys, and is checked with rex config check and applied with rex config reload.
⚡ The rex CLI can create sessions, split panes, send text and keys, capture a pane's output, and run a command and return its exit code with run --wait.
🤖 There is no built-in AI assistant, but Rex supports an agent status protocol (OSC 7501) and a rex skill setup command for Claude Code, Codex, OpenCode and Pi.
🔀 Rex has Tailscale built in for connecting to servers on other machines, off by default, and it needs Rex on both ends.
⚠️ Downsides: beta and invite-only, Mac only, unclear open-source status and pricing, no tmux config import or copy mode yet, rough edges in remote, and processes still die on a reboot.
✅ Verdict: the most interesting terminal I've seen this year for anyone running coding agents, but it's an early beta, so try it next to Ghostty for agent sessions and keep your current setup for everything else. Receive SMS online on sms24.me
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