browser_visual_check
Find common UI problems automatically—no baseline required. Include accessibility and responsive checks as needed.
Instructions
No-baseline automated UI issue scan: scans the current page for common UI problems (invisible text, overlapping elements, z-index occlusion, small click targets, blank regions, overflow, missing image alt, contrast issues, responsive breakpoints) and returns a natural-language issue list.
中文详情：
用途：无需基线直接扫描当前页面常见 UI 问题（文字不可见、元素重叠、z-index 遮挡、点击区域过小、空白区域、溢出、图片 alt 缺失、对比度不足、响应式断点等），输出自然语言描述的问题清单
何时使用：UI 走查时快速发现问题；上线前 UI 健康检查；多 viewport 响应式验证；可访问性基础扫描（对比度/alt 缺失）时
输出：{ ok: boolean, totalIssues: number, issues: array, summary: string } — 每项含 { severity, category, description, selector, recommendation }
参数：
includeAccessibility (boolean, 可选)：是否包含可访问性检查（图片 alt 缺失、对比度检测），默认 true
includeResponsive (boolean, 可选)：是否包含响应式检查，默认 false
viewports (array, 可选)：响应式检查的 viewport 列表，可选 mobile/tablet/desktop，仅当 includeResponsive=true 时生效，默认 ["mobile","tablet"]
severity (string, 可选)：最低报告级别，可选 blocking/major/minor，默认 major
错误：浏览器未启动抛出 'Browser not launched'；viewport 无效抛出 'Invalid viewport'
示例：{"includeAccessibility":true,"includeResponsive":true,"viewports":["mobile","desktop"],"severity":"major"}
Input Schema
| Name | Required | Description | Default |
|---|---|---|---|
| severity | No | 最低报告级别：blocking（只报阻断级）/ major（报阻断+严重级）/ minor（全部报告），默认major | major |
| viewports | No | 响应式检查的viewport列表，仅当 includeResponsive=true 时生效 | |
| includeResponsive | No | 是否包含响应式检查，默认false | |
| includeAccessibility | No | 是否包含可访问性检查（图片alt缺失、对比度检测），默认true |