A queue, not a black box
Each job has a task, a status, and an output you can inspect. Nothing is applied without a diff you approve.
Good for the boring pile
Test coverage for a module, a mechanical rename across a package, docstrings for a legacy file — work that is well-specified and tedious.
What it does not do
Fleet is on a 14-day trial and then part of the Pro plan. It is a queue for well-specified tasks, not an autonomous engineer.