# split_window

Source: https://libtmux.org/en/swift/latest/mcp/tools/split_window/

> Start a pane's configured process; accepts no command payload. Create a configured-process pane without accepting command or environment data.

MCP is in development

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

Start a pane’s configured process; accepts no command payload. Create a configured-process pane without accepting command or environment data.

[All Swift tools](../) · [JSON](../split_window.json) · [Source](https://github.com/libtmux/libtmux-swift/blob/254f8b2be7eb60cacc3ffcb3ea8e456784f582df/Sources/LibTmuxMCP/ToolOperation.swift#L45)

## Arguments

* `direction` optional · string

  Caller-controlled direction.

* `paneId` required · string

  Caller-controlled paneId.

* `startDirectory` optional · string

  Caller-controlled startDirectory.

## Schemas

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