OSC 633 VS Code Integration

Category: extensions · Tags: Operating System Commands (OSC)

OSC 633 is VS Code's shell integration protocol, extending OSC 133 with additional markers for command detection, output boundaries, and shell state. It enables features like command decorations, run recent command, and sticky scroll in VS Code's integrated terminal.

How this is tested: Send OSC 633 ; A ST, verify terminal accepts the sequence.

Supported by 7 of 14 backends (50%)

Terminal Applications

Terminal	Version	Support	Notes
iterm2-app	3.6.9	✓ yes
kitty-app	0.46.2	✓ yes
Terminal.app	2.15	✓ yes
iTerm2	3.6.9	? unknown
Ghostty	1.3.1	? unknown
cmux	0.62.2	? unknown
Kitty	0.46.2	? unknown
VS Code	1.112.0	? unknown
Warp	0.2026.03.18.08.24.03	? unknown
Cursor	2.6.21	? unknown

Headless Backends

Parser correctness only — a ✓ means the parser accepts the sequence.

Backend	Version	Support	Notes
Alacritty	0.26.0	✓ yes
vt100	0.2.1	✓ yes
vterm	0.2.0	✓ yes
WezTerm	0.1.0-fork.5	✓ yes

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