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KITTY_* env variables
$KITTY_PID, $KITTY_WINDOW_ID, $KITTY_INSTALLATION_DIRThe kitty terminal sets a family of
KITTY_* environment variables to expose runtime information to child processes. KITTY_PID holds the kitty process ID, KITTY_WINDOW_ID identifies the OS window, and KITTY_INSTALLATION_DIR points at kitty's installation tree (used by kitty's shell integration to locate helper scripts).
Applications can detect a kitty session by checking for any of these variables, and kitten utilities rely on them to communicate back to the parent terminal.How this is testedmanual
Manual verification required — no automated probe available.
Manual verification required — no automated probe available.
The same probe runs against headless backends (via Termless) and real terminal apps (via a daemon launched in each terminal). This lets us distinguish parser correctness from rendering correctness.
Supported by 0 of 14 backends (0%)
Terminal Applications
| Terminal | Version | Support | Notes |
|---|---|---|---|
| iTerm2 | 3.6.9 | ? unknown | |
| Ghostty | 1.3.1 | ? unknown | |
| Terminal.app | 2.15 | ? unknown | |
| Kitty | 0.46.2 | ? unknown | |
| VS Code | 1.113.0 | ? unknown | |
| Warp | 0.2026.03.18.08.24.03 | ? unknown | |
| Cursor | 2.6.21 | ? unknown |