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Set Up Time-of-Day Rules

The classic runaway happens at 2 AM. A time-of-day rule makes unattended overnight spend require a human.

Step 1 — Pick the window

Your team's business hours, per agent or fleet.

BLOCK outside the window (strict), or FLAG (overnight purchases wait for review).

For global fleets, set windows per agent group.

{
  "time_of_day": {
    "window": ["09:00", "18:00"],
    "tz": "Europe/Athens",
    "outside": "flag"
  }
}

Overnight = human review.

What about legit overnight batch jobs?

Set the action to FLAG — they wait for review instead of being blocked.

Does it apply per agent?

Yes — windows can differ per agent or fleet.

One API call (or MCP tool) in front of every agent transaction — APPROVED, BLOCKED, or FLAGGED, deterministic, ~5 ms, fully logged.