# set_pane_title

Source: https://libtmux.org/en/py/latest/mcp/tools/set_pane_title/

> Set the title of a tmux pane.

MCP is in development

Server behavior and tool contracts may change. Tool availability depends on the server configuration.

Set the title of a tmux pane.

Use titles to label panes for later identification via [list_panes](https://libtmux.org/en/py/latest/mcp/tools/list_panes/) or [get_pane_info](https://libtmux.org/en/py/latest/mcp/tools/get_pane_info/).

[All Python tools](https://libtmux.org/en/py/latest/mcp/tools/) · [JSON](https://libtmux.org/en/py/latest/mcp/tools/set_pane_title.json) · [Source](https://github.com/tmux-python/libtmux-mcp/blob/4daddc0dfca96c43bf521d818bf91564e1434760/src/libtmux_mcp/tools/pane_tools/__init__.py#L126)

## Arguments

* `pane_id` optional

  Pane ID (e.g. '%1').

  Default: `null`.

* `session_id` optional

  Session ID (e.g. '$1') for pane resolution.

  Default: `null`.

* `session_name` optional

  Session name for pane resolution.

  Default: `null`.

* `socket_name` optional

  tmux socket name.

  Default: `null`.

* `title` required · string

  The new pane title.

* `window_id` optional

  Window ID for pane resolution.

  Default: `null`.

## Schemas

The schema defines required fields, nested values, defaults, and validation constraints.

Input schema

```json
{
  "additionalProperties": false,
  "properties": {
    "pane_id": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "description": "Pane ID (e.g. '%1')."
    },
    "session_id": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "description": "Session ID (e.g. '$1') for pane resolution."
    },
    "session_name": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "description": "Session name for pane resolution."
    },
    "socket_name": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "description": "tmux socket name."
    },
    "title": {
      "description": "The new pane title.",
      "type": "string"
    },
    "window_id": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "description": "Window ID for pane resolution."
    }
  },
  "required": [
    "title"
  ],
  "type": "object"
}
```

Output schema

```json
{
  "description": "Serialized tmux pane.",
  "properties": {
    "is_caller": {
      "anyOf": [
        {
          "type": "boolean"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "description": "MCP caller identity for this pane. ``True`` when the pane matches the caller's ``TMUX_PANE`` *and* lives on the same tmux socket as the caller's ``TMUX`` (verified via socket realpath); ``False`` otherwise, including the case where the pane id matches but the socket does not or cannot be proven to; ``None`` when the MCP process is not running inside tmux at all."
    },
    "pane_active": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "description": "Active flag ('1' or '0')"
    },
    "pane_at_bottom": {
      "anyOf": [
        {
          "type": "boolean"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "description": "True when the pane touches the window's bottom edge."
    },
    "pane_at_left": {
      "anyOf": [
        {
          "type": "boolean"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "description": "True when the pane touches the window's left edge."
    },
    "pane_at_right": {
      "anyOf": [
        {
          "type": "boolean"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "description": "True when the pane touches the window's right edge."
    },
    "pane_at_top": {
      "anyOf": [
        {
          "type": "boolean"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "description": "True when the pane touches the window's top edge. tmux accounts for ``pane-border-status`` here, so the top row may be 1 instead of 0 when the status bar is at the top."
    },
    "pane_bottom": {
      "anyOf": [
        {
          "type": "integer"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "description": "Bottom edge row (inclusive), window-relative."
    },
    "pane_current_command": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "description": "Running command"
    },
    "pane_current_path": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "description": "Current working directory"
    },
    "pane_height": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "description": "Height in rows"
    },
    "pane_id": {
      "description": "Pane ID (e.g. '%1')",
      "type": "string"
    },
    "pane_index": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "description": "Pane index"
    },
    "pane_left": {
      "anyOf": [
        {
          "type": "integer"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "description": "Left edge column, 0-based and window-relative."
    },
    "pane_pid": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "description": "Process ID"
    },
    "pane_right": {
      "anyOf": [
        {
          "type": "integer"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "description": "Right edge column (inclusive), window-relative."
    },
    "pane_title": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "description": "Pane title"
    },
    "pane_top": {
      "anyOf": [
        {
          "type": "integer"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "description": "Top edge row, 0-based and window-relative."
    },
    "pane_tty": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "description": "TTY device path of the pane (e.g. '/dev/pts/5')."
    },
    "pane_width": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "description": "Width in columns"
    },
    "session_id": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "description": "Parent session ID"
    },
    "window_id": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "description": "Parent window ID"
    }
  },
  "required": [
    "pane_id"
  ],
  "type": "object"
}
```

Tool annotations

```json
{
  "destructiveHint": true,
  "idempotentHint": false,
  "openWorldHint": true,
  "readOnlyHint": false
}
```