OSC Sequences

Operating System Command — ESC ] followed by a numeric command, semicolon-separated arguments, and a string terminator. Used for cross-cutting concerns like window title, hyperlinks, clipboard, and shell integration.

Structure

ESC ] <Ps> ; <Pt> ST

• Ps: numeric command (e.g. 0 set title, 8 hyperlink, 133 prompt mark)
• Pt: payload — free-form text, format depends on Ps
• ST: string terminator — ESC \ (preferred) or BEL (legacy; both accepted)

For example:

• OSC 0 ; My Window \e\\ — sets window title to "My Window"
• OSC 8 ; ; https://example.com \e\\Visit\e]8;;\e\\ — wraps "Visit" in a hyperlink

Detail pages

• OSC 0 / 2 — Set Title
• OSC 4 — Palette Set / Query
• OSC 5 — Special Colors
• OSC 7 — Working Directory
• OSC 8 — Hyperlinks
• OSC 9 — Notification (iTerm)
• OSC 9;4 — Progress / Task State (ConEmu)
• OSC 10-19 — Dynamic Colors
• OSC 22 — Mouse Cursor Shape
• OSC 52 — Clipboard
• OSC 88 — Terminal Resume Protocol — Proposal
• OSC 99 — Kitty Notification Protocol
• OSC 104 / 105 / 110-119 — Color Reset
• OSC 133 — Shell Integration
• OSC 777 — Notification (urxvt)
• OSC 1337 — Inline Image
• See also CSI #P/Q/R — XTPUSHCOLORS

Other OSCs are listed in Sequence Reference → "OSC".

See also

• Shell Integration — uses OSC 7, OSC 133.
• Notifications — uses OSC 9, OSC 99, OSC 777.
• Cursor and Mouse — OSC 22 mouse cursor shape.
• Images — uses OSC 1337.