tmux_select_window
Switch to a specific window in a tmux session by specifying the session name and window identifier to manage terminal workflows.
Instructions
Switch to a specific window in a tmux session.
Args:
session (string, required): Name of the session
window (string or number, required): Window index or name
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| session | Yes | Name of the session | |
| window | Yes | Window index or name |
Implementation Reference
- src/index.ts:720-735 (handler)The handler function for the tmux_select_window tool. It formats the target using formatTarget, runs the tmux select-window command via runTmux, and returns success or error response.async ({ session, window }) => { try { const target = formatTarget(session, window); await runTmux(`select-window -t "${target}"`); return { content: [{ type: "text", text: `Switched to window '${window}' in session '${session}'.` }], structuredContent: { success: true, session, window }, }; } catch (error) { return { content: [{ type: "text", text: error instanceof Error ? error.message : String(error) }], isError: true, }; } }
- src/index.ts:707-712 (schema)Zod input schema defining required parameters: session (string) and window (string or number).inputSchema: z .object({ session: z.string().min(1).describe("Name of the session"), window: z.union([z.string(), z.number()]).describe("Window index or name"), }) .strict(),
- src/index.ts:698-736 (registration)Registers the tmux_select_window tool with the MCP server using server.registerTool, providing name, metadata (title, description, schema, annotations), and handler function.server.registerTool( "tmux_select_window", { title: "Select tmux Window", description: `Switch to a specific window in a tmux session. Args: - session (string, required): Name of the session - window (string or number, required): Window index or name`, inputSchema: z .object({ session: z.string().min(1).describe("Name of the session"), window: z.union([z.string(), z.number()]).describe("Window index or name"), }) .strict(), annotations: { readOnlyHint: false, destructiveHint: false, idempotentHint: true, openWorldHint: false, }, }, async ({ session, window }) => { try { const target = formatTarget(session, window); await runTmux(`select-window -t "${target}"`); return { content: [{ type: "text", text: `Switched to window '${window}' in session '${session}'.` }], structuredContent: { success: true, session, window }, }; } catch (error) { return { content: [{ type: "text", text: error instanceof Error ? error.message : String(error) }], isError: true, }; } } );
- src/index.ts:45-68 (helper)Shared utility function to execute tmux commands asynchronously with execAsync and custom error messages for common tmux issues.async function runTmux(args: string): Promise<string> { try { const { stdout } = await execAsync(`tmux ${args}`); return stdout.trim(); } catch (error: unknown) { if (error instanceof Error && "stderr" in error) { const stderr = (error as { stderr: string }).stderr; if (stderr.includes("no server running")) { throw new Error("tmux server is not running. Start a session first with tmux_create_session."); } if (stderr.includes("session not found")) { throw new Error("Session not found. Use tmux_list_sessions to see available sessions."); } if (stderr.includes("window not found")) { throw new Error("Window not found. Use tmux_list_windows to see available windows."); } if (stderr.includes("can't find pane")) { throw new Error("Pane not found. Use tmux_list_panes to see available panes."); } throw new Error(`tmux error: ${stderr}`); } throw error; } }
- src/index.ts:70-82 (helper)Shared utility function to construct tmux target strings in the format 'session:window.pane' from parameters.function formatTarget(session?: string, window?: number | string, pane?: number): string { let target = ""; if (session) { target = session; if (window !== undefined) { target += `:${window}`; if (pane !== undefined) { target += `.${pane}`; } } } return target; }