Playwright MCP Server

Instructions

Implementation Reference

• src/tools/browser/interaction.ts:21-47 (handler)

  The ClickAndSwitchTabTool class implementing the core logic: clicks the selector, waits for new tab via context.waitForEvent('page'), loads it, switches global page, returns URL.

  export class ClickAndSwitchTabTool extends BrowserToolBase {
    /**
     * Execute the click and switch tab tool
     */
    async execute(args: any, context: ToolContext): Promise<ToolResponse> {
      
      return this.safeExecute(context, async (page) => {
        // Listen for a new tab to open
        const [newPage] = await Promise.all([
          //context.browser.waitForEvent('page'), // Wait for a new page (tab) to open
          page.context().waitForEvent('page'),// Wait for a new page (tab) to open
          page.click(args.selector), // Click the link that opens the new tab
        ]);
  
        // Wait for the new page to load
        await newPage.waitForLoadState('domcontentloaded');
  
        // Switch control to the new tab
        setGlobalPage(newPage);
        //page= newPage; // Update the current page to the new tab
        //context.page = newPage;
        //context.page.bringToFront(); // Bring the new tab to the front
        return createSuccessResponse(`Clicked link and switched to new tab: ${newPage.url()}`);
        //return createSuccessResponse(`Clicked link and switched to new tab: ${context.page.url()}`);
      });
    }
  }

• src/tools.ts:415-424 (schema)

  Tool schema definition including name, description, and input schema requiring 'selector' string.

    name: "playwright_click_and_switch_tab",
    description: "Click a link and switch to the newly opened tab",
    inputSchema: {
      type: "object",
      properties: {
        selector: { type: "string", description: "CSS selector for the link to click" },
      },
      required: ["selector"],
    },
  },

• src/toolHandler.ts:538-539 (registration)

  Registration in the main tool handler switch statement dispatching to the tool's execute method.

  case "playwright_click_and_switch_tab":
    return await clickAndSwitchTabTool.execute(args, context);

• src/tools.ts:450-450 (registration)

  Tool name registered in BROWSER_TOOLS array for browser-requiring tool detection.

  "playwright_click_and_switch_tab"

• src/toolHandler.ts:339-339 (registration)

  Instantiation of ClickAndSwitchTabTool instance in initializeTools function.

  if (!clickAndSwitchTabTool) clickAndSwitchTabTool = new ClickAndSwitchTabTool(server);