UI Browser Test (localhost:8001)

When to use

Use this skill when the user asks you to start Cursor's built-in browser to test UI, mentions "内置浏览器", "UI测试", "8001端口", or wants you to open and test the page on port 8001.

Default target

• URL: http://localhost:8001

If the user specifies a different path (e.g. /chat) or query params, prefer the user-provided URL while keeping host/port on localhost:8001 unless explicitly changed.

Workflow

0) Preconditions

• If the page cannot be reached (connection refused / blank), assume the dev server is not running and tell the user what you observed and what URL failed.
• Do not guess alternative ports unless the user asks.

1) Open the built-in browser safely

Follow the built-in browser best practices:

• Start by listing existing browser tabs. If a tab already exists, lock it before interacting.
• If no suitable tab exists, navigate directly to http://localhost:8001, then lock the tab.
• Between interactions that may change the DOM/URL, take a fresh snapshot before the next structural action.
• Unlock only when completely finished with all browser operations.

2) Smoke-test checklist (fast, deterministic)

On the loaded page, perform a quick pass:

• Visual verification: take one screenshot after load.
• Console: check browser console messages; treat uncaught exceptions and React/Vue runtime errors as failures.
• Network: inspect network requests; flag 4xx/5xx responses and failed fetch/XHR as failures.
• Basic interaction (minimal):
  • If there is an obvious primary action (e.g. a main button, input, navigation tab), perform exactly one click or one short input action.
  • After the action, re-check console + network + take a second screenshot if the UI changed.

3) Report format

Return results in this compact structure:

• URL tested: the final URL actually opened
• Page state: loaded / partial / failed to load (+ error)
• Console: OK / issues (paste the most important message lines)
• Network: OK / issues (list failing request URLs + status)
• UI checks:
  • What you clicked/typed (if any)
  • What changed (if anything)
• Artifacts: screenshots taken (describe them; no embeds)

4) If failures happen

• Prefer evidence: screenshot + console + failing network request.
• Suggest the smallest next step: e.g. "start dev server", "fix 500 on /api/xxx", "missing env var", etc.