Séance
Séance is a free Linux terminal multiplexer that keeps track of AI coding agent sessions.
What Séance is
Séance is a free Linux terminal multiplexer that keeps track of AI coding agent sessions. It automatically tracks Claude Code, Codex, Pi, OpenCode, and Antigravity CLI sessions, and shows whether each is working, waiting for permission, or idle. Permission requests and task completions can appear as desktop notifications with unread tracking. The interface uses a horizontally scrolling pane layout, with workspaces, tabs within columns, a command palette, focus-follows-mouse, and session persistence across restarts. It supports X11 and Wayland and uses GTK4, libadwaita, and libghostty, with blur and transparency. The `seance ctl` command connects to a running instance over a Unix domain socket; commands support JSON output and can manage workspaces and panes, send input, and read terminal output. The project states that it has no telemetry and is licensed under MIT. Installation options include Arch Linux AUR, a Nix flake, and an x86_64 AppImage. OpenCode remote attach sessions and `--pure` launches are not tracked. Séance is pre-1.0, and only its latest release is supported with security fixes.
Good
- Tracks five listed AI coding agent CLIs
- Shows working, permission-waiting, and idle states
- Desktop alerts include unread tracking
- Supports X11 and Wayland
- No telemetry; MIT licensed
Watch out
- OpenCode remote attach sessions are not tracked
- `--pure` launches are not tracked
- Only the latest release gets security fixes
Who it suits
Séance suits Linux users who want a shared terminal workspace for monitoring several AI coding agent sessions. Its command interface may also suit users who want to manage panes or read terminal output programmatically.
Verdict
Séance combines agent status monitoring with a terminal workspace and command interface for Linux. Check its tracking exclusions and latest-release-only security support before choosing it.
Plans and prices
From Séance's own pricing page, checked 8 Oct 2001.
| Plan | Price | What it gives you |
|---|---|---|
| Free and open source | Free | Linux · X11 or Wayland · MIT license |
The facts
Each one read from Séance's own pages, with the date it was checked.
What it does
- Additional integrations
- Release notes list OpenCode and Antigravity CLI session status tracking and notifications.checked 7 Oct 2001
- Agent integrations
- It auto-tracks Claude Code, Codex, Pi, OpenCode and Antigravity CLI sessions.checked 8 Oct 2001
- Agent tracking
- It automatically tracks Claude Code, Codex, and Pi sessions, showing whether they are working, waiting for permission, or idle.checked 7 Oct 2001
- Automation
- The seance ctl command communicates with the running app over a Unix domain socket; commands support JSON output and can manage workspaces and panes, send input, and read terminal output.checked 7 Oct 2001
- Automation API
- The seance ctl command communicates with the running instance over a Unix domain socket; commands support JSON output.checked 8 Oct 2001
- Compatibility limit
- The maker says OpenCode remote attach sessions and --pure launches are not tracked.checked 8 Oct 2001
- Installation
- The maker lists Arch Linux AUR, Nix flake, and x86_64 AppImage installation options.checked 7 Oct 2001
- Install options
- The maker documents Arch Linux AUR, Nix flake and x86_64 AppImage installation options.checked 8 Oct 2001
- License
- Séance is released under the MIT license.checked 8 Oct 2001
- Live status
- The sidebar tracks whether sessions are working, waiting for permission or idle.checked 8 Oct 2001
- Notifications
- Permission requests and task completions appear as desktop notifications with unread tracking.checked 8 Oct 2001
- Other features
- It includes workspaces, session persistence across restarts, tabs within columns, a command palette, focus-follows-mouse, and no telemetry.checked 7 Oct 2001
- Privacy
- The project states that Séance has no telemetry.checked 8 Oct 2001
- Purpose
- Séance is a scrolling terminal multiplexer that tracks AI coding agent sessions.checked 8 Oct 2001
- Requirements
- Building from source requires Zig 0.16.x, GTK4, libadwaita, OpenGL 4.3+ and Linux.checked 8 Oct 2001
- Security reporting
- The security policy asks users to report security issues privately through GitHub and says reports are acknowledged within 72 hours.checked 7 Oct 2001
- Security reports
- The security policy asks for private vulnerability reports and says the maintainer aims to acknowledge them within 72 hours.checked 8 Oct 2001
- Security support limit
- Séance is pre-1.0, and only the latest released version is supported with security fixes.checked 7 Oct 2001
- Session features
- It includes workspaces, session persistence across restarts, tabs within columns, a command palette and focus-follows-mouse.checked 8 Oct 2001
- Support
- The maker welcomes bug reports, feature requests, and pull requests, and directs questions and show-and-tell to GitHub Discussions.checked 7 Oct 2001
- Support status
- Séance is pre-1.0 and only the latest released version is supported with security fixes.checked 8 Oct 2001
- Terminal and display
- It uses GTK4, libadwaita and libghostty, with X11 and Wayland support, blur and transparency.checked 8 Oct 2001
- Terminal and layout
- It uses GTK4, libadwaita, and libghostty, and supports X11 and Wayland with a horizontally scrolling pane layout.checked 7 Oct 2001
