browserNavigateBack
Navigate to the previous page in a browser session, with optional wait time to capture snapshots post-operation, enabling efficient web automation and interaction tracking.
Instructions
返回到上一页
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| pageId | Yes | 页面ID | |
| waitForTimeout | No | 操作后等待获取快照的延迟时间（毫秒，默认2000） |
Implementation Reference
- lib/tools/navigate.js:45-49 (handler)The handler function for the 'browser_navigate_back' tool. It calls goBack on the current tab's page, includes a snapshot in the response, and adds the corresponding Playwright code snippet.
handle: async (tab, params, response) => { await tab.page.goBack(); response.setIncludeSnapshot(); response.addCode(`await page.goBack();`); }, - lib/tools/navigate.js:38-44 (schema)Schema definition for the 'browser_navigate_back' tool, including name, title, description, empty input schema, and readOnly type.
schema: { name: 'browser_navigate_back', title: 'Go back', description: 'Go back to the previous page', inputSchema: z.object({}), type: 'readOnly', }, - lib/tools.js:32-49 (registration)Registration of all tools, including the navigate tools (which contain 'browser_navigate_back') by spreading the imported navigate array into the allTools export.
export const allTools = [ ...common, ...console, ...dialogs, ...evaluate, ...files, ...form, ...install, ...keyboard, ...navigate, ...network, ...mouse, ...pdf, ...screenshot, ...snapshot, ...tabs, ...wait, ]; - lib/browserServerBackend.js:50-52 (registration)MCP tool listing registration: maps internal tools (including 'browser_navigate_back') to MCP tool format using toMcpTool.
async listTools() { return this._tools.map(tool => toMcpTool(tool.schema)); } - lib/browserServerBackend.js:53-73 (registration)MCP tool execution: finds tool by name (e.g., 'browser_navigate_back'), parses arguments, calls the handle function, and serializes the response.
async callTool(name, rawArguments) { const tool = this._tools.find(tool => tool.schema.name === name); if (!tool) throw new Error(`Tool "${name}" not found`); const parsedArguments = tool.schema.inputSchema.parse(rawArguments || {}); const context = this._context; const response = new Response(context, name, parsedArguments); context.setRunningTool(name); try { await tool.handle(context, parsedArguments, response); await response.finish(); this._sessionLog?.logResponse(response); } catch (error) { response.addError(String(error)); } finally { context.setRunningTool(undefined); } return response.serialize(); }