stream_screencast
Captures the latest browser frame as a base64 JPEG without blocking the main thread, enabling real-time visual verification of Canvas/WebGL interfaces and animations.
Instructions
NON-BLOCKING VISUAL CAPTURE. Returns the latest frame from the async CDP Page.startScreencast stream. Unlike browser_screenshot, this does NOT block the browser's main thread or force a synchronous render. The screencast runs continuously in the background at 60% JPEG quality.
USE CASES: • Visual verification after an action without blocking the page • Canvas/WebGL interfaces where AX tree is empty • Monitoring animations or transitions
Returns the latest frame as a base64-encoded JPEG image.
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
No arguments | |||