browser_wait_for
Read-only
Monitor webpage content for specific text to appear, disappear, or wait a set duration, ensuring precise timing for accessibility testing in automated scans.
Instructions
Wait for text to appear or disappear or a specified time to pass
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| text | No | The text to wait for | |
| textGone | No | The text to wait for to disappear | |
| time | No | The time to wait in seconds |
Implementation Reference
- src/tools/wait.ts:35-60 (handler)Handler function implementing the 'browser_wait_for' tool. Waits for a specified time, or for text to appear (visible) or disappear (hidden) using Playwright locators on the current tab.
handle: async (context, params, response) => { if (!params.text && !params.textGone && !params.time) throw new Error('Either time, text or textGone must be provided'); if (params.time) { response.addCode(`await new Promise(f => setTimeout(f, ${params.time!} * 1000));`); await new Promise(f => setTimeout(f, Math.min(30000, params.time! * 1000))); } const tab = context.currentTabOrDie(); const locator = params.text ? tab.page.getByText(params.text).first() : undefined; const goneLocator = params.textGone ? tab.page.getByText(params.textGone).first() : undefined; if (goneLocator) { response.addCode(`await page.getByText(${JSON.stringify(params.textGone)}).first().waitFor({ state: 'hidden' });`); await goneLocator.waitFor({ state: 'hidden' }); } if (locator) { response.addCode(`await page.getByText(${JSON.stringify(params.text)}).first().waitFor({ state: 'visible' });`); await locator.waitFor({ state: 'visible' }); } response.addResult(`Waited for ${params.text || params.textGone || params.time}`); response.setIncludeSnapshot(); }, - src/tools/wait.ts:23-33 (schema)Schema definition for the 'browser_wait_for' tool, specifying name, title, description, input schema with optional time, text, or textGone parameters using Zod validation.
schema: { name: 'browser_wait_for', title: 'Wait for', description: 'Wait for text to appear or disappear or a specified time to pass', inputSchema: z.object({ time: z.number().optional().describe('The time to wait in seconds'), text: z.string().optional().describe('The text to wait for'), textGone: z.string().optional().describe('The text to wait for to disappear'), }), type: 'readOnly', }, - src/tools/wait.ts:63-65 (registration)Export of the defined tool for registration in the MCP tools collection.
export default [ wait, ];