AutoProbeMCP

Instructions

Implementation Reference

• src/index.ts:519-542 (handler)

  Handler for the 'screenshot' tool: validates args with ScreenshotSchema, captures screenshot of current page using Playwright (fullPage and path options), returns success message with buffer size or save path.

  case 'screenshot': {
    if (!currentPage) {
      throw new Error('No browser page available. Launch a browser first.');
    }
  
    const params = ScreenshotSchema.parse(args);
    const buffer = await currentPage.screenshot({
      fullPage: params.fullPage,
      path: params.path
    });
  
    const result = params.path 
      ? `Screenshot saved to: ${params.path}`
      : `Screenshot captured (${buffer.length} bytes)`;
  
    return {
      content: [
        {
          type: 'text',
          text: result
        }
      ]
    };
  }

• src/index.ts:39-42 (schema)

  Zod schema for 'screenshot' tool inputs: fullPage (boolean, default false), path (optional string to save screenshot).

  const ScreenshotSchema = z.object({
    fullPage: z.boolean().default(false),
    path: z.string().optional()
  });

• src/index.ts:219-236 (registration)

  Tool registration in ListToolsResponse: defines name 'screenshot', description, and inputSchema matching the Zod schema.

  {
    name: 'screenshot',
    description: 'Take a screenshot of the current page',
    inputSchema: {
      type: 'object',
      properties: {
        fullPage: {
          type: 'boolean',
          default: false,
          description: 'Capture full scrollable page'
        },
        path: {
          type: 'string',
          description: 'Path to save screenshot (optional)'
        }
      }
    }
  },