# pane_id

Source: https://libtmux.org/en/tmux/3.7c/catalog/formats/pane_id/

> Unique pane ID

format variable tmux3.7c

Unique pane ID

* Scope

  Describes the pane being formatted

* Type

  Text

* Short form

  `#D`

* Usage

  `#{pane_id}`

## Description[#](https://libtmux.org/en/tmux/3.7c/catalog/formats/pane_id/#description)

Unique pane ID

## Releases[#](https://libtmux.org/en/tmux/3.7c/catalog/formats/pane_id/#releases)

* [tmux 3.7c](https://libtmux.org/en/tmux/3.7c/catalog/formats/pane_id/) : present
* [tmux 3.2a](https://libtmux.org/en/tmux/3.2a/catalog/formats/pane_id/) : present

## Source[#](https://libtmux.org/en/tmux/3.7c/catalog/formats/pane_id/#source)

* Defined in

  [`format.c:3455`](https://github.com/tmux/tmux/blob/e476c1230b958df0cb12977517d24b3dc931375b/format.c#L3455)

* C source reference

  [`format_cb_pane_id`](https://libtmux.org/en/tmux/3.7c/reference/c-function-format-c-format_cb_pane_id/)

* CLI Manual

  [Original manual entry](https://libtmux.org/en/tmux/3.7c/manual/full/#pane_id)

## Used by[#](https://libtmux.org/en/tmux/3.7c/catalog/formats/pane_id/#used-by)

Library documentation that names this format variable.

* Python

  [`libtmux_mcp.tools.pane_tools.kill_pane`](https://libtmux.org/en/py/latest/mcp/reference/libtmux_mcp-tools-pane_tools-kill_pane/), [`libtmux_mcp.tools.pane_tools.respawn_pane`](https://libtmux.org/en/py/latest/mcp/reference/libtmux_mcp-tools-pane_tools-respawn_pane/), [`libtmux_mcp.tools.pane_tools.search_panes`](https://libtmux.org/en/py/latest/mcp/reference/libtmux_mcp-tools-pane_tools-search_panes/), [`libtmux_mcp.tools.pane_tools.select_pane`](https://libtmux.org/en/py/latest/mcp/reference/libtmux_mcp-tools-pane_tools-select_pane/), [`libtmux_mcp.tools.session_tools.rename_session`](https://libtmux.org/en/py/latest/mcp/reference/libtmux_mcp-tools-session_tools-rename_session/), [`libtmux_mcp.tools.wait_for_tools.wait_for_channel`](https://libtmux.org/en/py/latest/mcp/reference/libtmux_mcp-tools-wait_for_tools-wait_for_channel/) and 12 more

* Ruby

  [`LibTmux::ControlEvent#pane_id`](https://libtmux.org/en/ruby/latest/reference/libtmux-controlevent-pane_id/)

* Rust

  [`pane.Pane.pipe`](https://libtmux.org/en/rs/latest/reference/pane-pane-pipe/)

* Go

  [`tmux.FormatValues.PaneID`](https://libtmux.org/en/go/latest/reference/tmux-formatvalues-paneid/)

* Java

  [`io.github.libtmux.TmuxFormats`](https://libtmux.org/en/java/latest/reference/io-github-libtmux-tmuxformats-tmuxformats/)

* C++

  [`libtmux::layout_contains_pane`](https://libtmux.org/en/cxx/latest/reference/libtmux-layout_contains_pane/)