Diff Kernel Profile Archives

Compare the actual contents of two Kernel browser profiles to identify state differences that could explain a reported issue. The skill downloads both profile archives via the Kernel CLI, decompresses them, and produces a structured diff focused on the surfaces most likely to drive divergent behavior: cookies, local/session storage, preferences, extension state, login data, and history.

Inputs

The user must provide:

1. Profile A — the "baseline" or "working" profile (ID or name)
2. Profile B — the "subject" or "broken" profile (ID or name)
3. Issue description — what's happening on B that isn't happening on A (e.g. "login flow on chase.com fails on profile B but works on A", "datadome challenge always fires on B but never on A", "saved credentials missing")

If any of these are missing, prompt for them before proceeding. The issue description is critical — it determines which surfaces of the profile to weight heavily in the diff.

Prerequisites