Catch runtime bugs before they reach users.
runtime verification
Confirm edited app code works at runtime, not only that its types or build succeed.
When to use it
Use it to confirm a change works in a running Next.js app.
It changes how the agent verifies edited app code by cross-checking Next.js runtime data with a real browser.
What you provide
This skill
browser session state
Saves browser session state
Next.js 16.3 or newer with Turbopack is required.
agent-browser version 0.31.1 or newer must be installed and available on PATH.
A Next.js development server must already be running.