ground
$0 / forever
Free forever, and it is the whole instrument. A paid plan does not detect drift better — there is one detector and this is it.
what it looks like
grounded Φ 0.00 ⟨benchmark|pars|ship⟩ advancing d7 advancing Φ 0.06 ⟨benchmark|pars|ship⟩ advancing d5 goal-drift Φ 0.49 ⟨pars|test|write⟩ advancing d4 goal-drift Φ 0.59 ⟨refactor|tokenis⟩ advancing d4 goal-drift Φ 0.56 ⟨help|logg|tidy⟩ advancing d5
An agent asked to ship a parser and a benchmark. By the third step it is writing tests, then refactoring the tokeniser, then tidying logging — each a reasonable thing to be doing, none of them the job.
It reports advancing every single step. It believes it is fine, and on its own terms it is. The ground was set on the first check and cannot be revised, which is why the fourth line reads 0.59 instead of agreeing with the agent.
what it allows
Going over returns 429 with the reset time — a hard stop, not an overage. No invoice you did not expect. Ask for more and it is a config change.
what it does not do
It does not remember. A day of drift history is enough to debug a run you are watching and not enough to see a pattern across a week. It will not page you when an agent spirals at 3am, because nothing here is watching but you.