l0ng-ai df8432f0af fix(cli): one answer for a pane that is not there
Three verbs, one condition, three sentences:

  procs %99    no pane %99 on this machine — `tty7 pane ls --all` lists them
  capture %99  observing pane %99: daemon refused Observe: no such pane 99
  send %99 hi  sending input to pane %99: no such pane 99

The daemon's own refusal makes a fine diagnostic and a poor sentence: it
names the wire request rather than the verb that was typed, so `capture`
told the user about "Observe", a word that appears nowhere else they can
see. This is the CLI agents read stderr from, and it was reporting one state
of the world three ways.

They now all answer with the line `procs` already used. The registry is
consulted only once something has failed, so the ordinary path still costs a
single round trip, and a failure with the pane present keeps its own words --
this must not swallow a connection error and call it a missing pane.

`resolve::no_such_pane` is now that sentence's one definition; the copy in
`workspace_of_pane` had drifted to suggesting plain `pane ls`, which does not
list the orphaned pane most likely to be asked about.

Found by running the verbs against a live daemon rather than by reading:
every one of these paths looks right in isolation.
2026-08-15 21:55:10 +08:00

tty7

tty7

A terminal workbench: persistent sessions, remote work, agents.

Pure Rust · GPU rendering on Zed's gpui · VT core from Alacritty


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tty7 with a tab sidebar of agent sessions across several repos, running Claude Code

Why

  • Performance — ~2× the throughput of Alacritty, Ghostty, or Kitty (benchmarks)
  • Persistent sessions — quit or reboot; your shells and supported agent sessions keep running, no tmux
  • Editor-grade input — suggestions, completion, highlighting, history search
  • Remote development — files, repos, panes, and git data stay on the remote machine
  • Native SSH — profiles, SFTP, port forwarding, and jump hosts
  • Agent-aware — Claude Code, Codex & co.: status, notifications, git context
  • CLI + Skills — agents create panes, run commands, and inspect output

Install

Native builds for macOS, Windows, and Linux on Releases:

macOS …-macos-arm64.dmg · …-x86_64.dmg drag into Applications
Windows …-setup.exe · portable ….zip
Linux …-x86_64.AppImage chmod +x and run — X11/Wayland libraries bundled

What's inside

Editor-grade input ghost suggestions from history · explained tab completion · syntax highlighting · multi-line editing · click places the caret · ⌃ R fuzzy history
Window tabs & splits · ⌘ P palette · ⌘ F scrollback search · nine themes · IME
Agent-aware per-pane detection (18 CLIs): status dot · notifications · branch + diff · resume after reboot · tray icon when input is needed
Remote workspaces remote files, repos, changes, diffs, worktrees, tabs, and panes · reconnect from any client and continue where you left off
CLI + Skills bundled tty7 CLI · agent skill · pane/workspace control · real PTY commands · output, process, port, and agent status
SSH native russh stack: profiles with keychain secrets · SFTP panel · port forwarding · jump hosts · one-time, unprivileged tty7-server install

Full documentation lives in docs/keyboard shortcuts · config.json · CLI reference. The agent-facing CLI interface is also documented in skills/tty7/SKILL.md.

Install the skill with:

npx skills add l0ng-ai/tty7    # install
npx skills update tty7         # update later

Benchmarks

Same machine, same day, same 155×40 grid — Apple M1 Pro, macOS 26.3.1, five-run averages (2026-07-04):

tty7 Alacritty Ghostty Kitty
Plaintext I/O — 11 MB cat (lower = better) 95 ms 239 ms 179 ms 185 ms
DOOM-fire frame rate (higher = better) 888 fps 485 fps 552 fps 617 fps
Cold-launch memory 116 MB¹ 105 MB 128 MB 130 MB

¹ GUI 105 MB + the persistent server 11 MB.

Methodology and one-command reproduction: scripts/bench/.


S
Description
A terminal workbench in pure Rust: shells, persistent sessions, SSH, coding agents. GPU-rendered on Zed's gpui, VT core from Alacritty.
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