puppeteer_screenshot
Capture screenshots of web pages or specific elements using CSS selectors. Specify dimensions and names for organized outputs with browser automation.
Instructions
Take a screenshot of the current page or a specific element
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| height | No | Height in pixels (default: 600) | |
| name | Yes | Name for the screenshot | |
| selector | No | CSS selector for element to screenshot | |
| width | No | Width in pixels (default: 800) |
Implementation Reference
- src/tools/handlers.ts:103-139 (handler)Handler function that executes the puppeteer_screenshot tool: sets viewport, captures screenshot of page or specific element, stores it, notifies update, and returns text and image content.case "puppeteer_screenshot": { const width = args.width ?? 800; const height = args.height ?? 600; await page.setViewport({ width, height }); const screenshot = await (args.selector ? (await page.$(args.selector))?.screenshot({ encoding: "base64" }) : page.screenshot({ encoding: "base64", fullPage: false })); if (!screenshot) { return { content: [{ type: "text", text: args.selector ? `Element not found: ${args.selector}` : "Screenshot failed", }], isError: true, }; } state.screenshots.set(args.name, screenshot); notifyScreenshotUpdate(server); return { content: [ { type: "text", text: `Screenshot '${args.name}' taken at ${width}x${height}`, } as TextContent, { type: "image", data: screenshot, mimeType: "image/png", } as ImageContent, ], isError: false, }; }
- src/tools/definitions.ts:34-47 (schema)Tool definition including name, description, and input schema for puppeteer_screenshot.{ name: "puppeteer_screenshot", description: "Take a screenshot of the current page or a specific element", inputSchema: { type: "object", properties: { name: { type: "string", description: "Name for the screenshot" }, selector: { type: "string", description: "CSS selector for element to screenshot" }, width: { type: "number", description: "Width in pixels (default: 800)" }, height: { type: "number", description: "Height in pixels (default: 600)" }, }, required: ["name"], }, },
- src/server.ts:35-37 (registration)Registers the list tools handler which returns the TOOLS array including puppeteer_screenshot.server.setRequestHandler(ListToolsRequestSchema, async () => ({ tools: TOOLS, }));
- src/server.ts:39-41 (registration)Registers the call tool handler which dispatches to handleToolCall, executing puppeteer_screenshot based on name.server.setRequestHandler(CallToolRequestSchema, async (request) => handleToolCall(request.params.name, request.params.arguments ?? {}, state, server) );