Close Tab

Instructions

Implementation Reference

• src/tools/instances.ts:35-43 (handler)

  Handler function for pinchtab_close_tab. Accepts optional tabId, sends POST /tab with {action:'close'} and optionally tabId to the PinchTab HTTP API via pinch().

  async ({ tabId }) => {
    try {
      const body: Record<string, unknown> = { action: "close" };
      if (tabId) body.tabId = tabId;
      return toolResult(await pinch("POST", "/tab", body));
    } catch (error) {
      return toolError(error);
    }
  },

• src/tools/instances.ts:25-33 (schema)

  Input schema for pinchtab_close_tab. Defines optional tabId (string) parameter for closing a specific tab.

  {
    description: "Close the current tab or a specific tab by its ID.",
    inputSchema: z.object({
      tabId: z
        .string()
        .optional()
        .describe("Tab ID to close. If omitted, closes the current tab."),
    }),
    title: "Close Tab",

• src/tools/instances.ts:23-44 (registration)

  Registration of 'pinchtab_close_tab' tool on the MCP server via server.registerTool() inside registerInstanceTools().

  server.registerTool(
    "pinchtab_close_tab",
    {
      description: "Close the current tab or a specific tab by its ID.",
      inputSchema: z.object({
        tabId: z
          .string()
          .optional()
          .describe("Tab ID to close. If omitted, closes the current tab."),
      }),
      title: "Close Tab",
    },
    async ({ tabId }) => {
      try {
        const body: Record<string, unknown> = { action: "close" };
        if (tabId) body.tabId = tabId;
        return toolResult(await pinch("POST", "/tab", body));
      } catch (error) {
        return toolError(error);
      }
    },
  );

• src/tools/index.ts:7-12 (registration)

  registerAllTools() calls registerInstanceTools(server), which registers pinchtab_close_tab along with other instance tools.

  export function registerAllTools(server: McpServer) {
    registerInstanceTools(server);
    registerNavigationTools(server);
    registerInteractionTools(server);
    registerContentTools(server);
  }

• src/pinchtab/client.ts:6-49 (helper)

  The pinch() helper function sends HTTP requests (POST /tab with body) to the PinchTab local API, used by the handler.

  export async function pinch(
    method: string,
    path: string,
    body?: Record<string, unknown>,
  ): Promise<unknown> {
    if (!(await isPinchtabRunning())) {
      await ensurePinchtabRunning();
    }
  
    const headers: Record<string, string> = {
      "Content-Type": "application/json",
    };
    if (PINCHTAB_TOKEN) {
      headers["Authorization"] = `Bearer ${PINCHTAB_TOKEN}`;
    }
  
    const url = `${PINCHTAB_URL}${path}`;
  
    let res: Response;
    try {
      res = await fetch(url, {
        body: body ? JSON.stringify(body) : undefined,
        headers,
        method,
        signal: AbortSignal.timeout(REQUEST_TIMEOUT_MS),
      });
    } catch (error) {
      if (error instanceof DOMException && error.name === "TimeoutError") {
        throw new Error(`PinchTab ${method} ${path} timed out after ${REQUEST_TIMEOUT_MS / 1000}s`);
      }
      throw error;
    }
  
    if (!res.ok) {
      const text = await res.text();
      throw new Error(`PinchTab ${method} ${path} → ${res.status}: ${text}`);
    }
  
    const contentType = (res.headers.get("content-type") ?? "").split(";")[0].toLowerCase().trim();
    if (contentType === "application/json") {
      return res.json();
    }
    return res.text();
  }