Playwright MCP Server

Instructions

Implementation Reference

• src/tools/browser/navigation.ts:96-106 (handler)

  GoBackTool class implementing the execute method for playwright_go_back tool, which calls page.goBack()

  export class GoBackTool extends BrowserToolBase {
    /**
     * Execute the go back tool
     */
    async execute(args: any, context: ToolContext): Promise<ToolResponse> {
      return this.safeExecute(context, async (page) => {
        await page.goBack();
        return createSuccessResponse("Navigated back in browser history");
      });
    }
  }

• src/tools.ts:370-377 (schema)

  Tool schema definition including name, description, and empty input schema for playwright_go_back

    name: "playwright_go_back",
    description: "Navigate back in browser history",
    inputSchema: {
      type: "object",
      properties: {},
      required: [],
    },
  },

• src/toolHandler.ts:540-541 (registration)

  Registration in the main tool handler switch case, dispatching to goBackTool.execute

  case "playwright_go_back":
    return await goBackTool.execute(args, context);

• src/toolHandler.ts:343-343 (registration)

  Instantiation of the goBackTool instance during tool initialization

  if (!goBackTool) goBackTool = new GoBackTool(server);

• src/tools.ts:467-467 (registration)

  Inclusion in BROWSER_TOOLS array for conditional browser launching

  "playwright_go_back",