browser_wait_for
Read-only
Wait for specific text to appear or disappear, or a set time to pass during automated browser testing, enabling precise control of web interactions.
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:35-65 (handler)Handler function that implements the core logic of the 'browser_wait_for' tool: validates params, waits for time if specified, locates elements by text using Playwright, waits for visibility or hidden state, generates corresponding code snippet, and returns execution result.
handle: async (context, params) => { if (!params.text && !params.textGone && !params.time) throw new Error('Either time, text or textGone must be provided'); const code: string[] = []; if (params.time) { code.push(`await new Promise(f => setTimeout(f, ${params.time!} * 1000));`); await new Promise(f => setTimeout(f, Math.min(10000, params.time! * 1000))); } const tab = context.currentTabOrDie(); const locator = params.text ? tab.page.getByText(params.text).first() : undefined; const goneLocator = params.textGone ? tab.page.getByText(params.textGone).first() : undefined; if (goneLocator) { code.push(`await page.getByText(${JSON.stringify(params.textGone)}).first().waitFor({ state: 'hidden' });`); await goneLocator.waitFor({ state: 'hidden' }); } if (locator) { code.push(`await page.getByText(${JSON.stringify(params.text)}).first().waitFor({ state: 'visible' });`); await locator.waitFor({ state: 'visible' }); } return { code, captureSnapshot, waitForNetwork: false, }; }, - src/tools/wait.ts:23-33 (schema)Input schema and metadata for the 'browser_wait_for' tool, using Zod for validation of optional time, text, and textGone parameters.
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.coerce.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:68-70 (registration)Exports a tool factory function that registers the 'browser_wait_for' tool (via the 'wait' factory) for inclusion in the MCP tools list.
export default (captureSnapshot: boolean) => [ wait(captureSnapshot), ];