mcp-playwright

import type { ToolContext, ToolResponse } from "../common/types.js"; import { createErrorResponse, createSuccessResponse } from "../common/types.js"; import { BrowserToolBase } from "./base.js"; interface CustomUserAgentArgs { userAgent: string; } /** * Tool for validating custom User Agent settings */ export class CustomUserAgentTool extends BrowserToolBase { /** * Execute the custom user agent tool */ async execute(args: CustomUserAgentArgs, context: ToolContext): Promise<ToolResponse> { return this.safeExecute(context, async (page) => { if (!args.userAgent) { return createErrorResponse("Missing required parameter: userAgent must be provided"); } try { const currentUserAgent = await page.evaluate(() => navigator.userAgent); if (currentUserAgent !== args.userAgent) { const messages = [ "Page was already initialized with a different User Agent.", `Requested: ${args.userAgent}`, `Current: ${currentUserAgent}`, ]; return createErrorResponse(messages.join("\n")); } return createSuccessResponse("User Agent validation successful"); } catch (error) { return createErrorResponse(`Failed to validate User Agent: ${(error as Error).message}`); } }); } }