Set Up a Daily Spend Ceiling
The daily ceiling is the single most useful budget number. Setup in three steps.
Step 1 — Pick the number
Legitimate daily spend × 1.5. Start conservative; loosen with audit-log data.
Step 2 — Set the rule
Create a daily ceiling rule scoped to the agent.
Step 3 — Watch and tune
Review the audit log weekly. If legitimate work gets blocked, raise it; if spend stays near the cap, you found your number.
Rule
{
"daily_ceiling": {"max": 500, "currency": "USD", "action": "block"}
}The day resets; the ceiling enforces.
FAQ
When does the window reset?
Midnight in your configured timezone.
Should the ceiling be per agent or per fleet?
Both — per-agent for attribution, a fleet ceiling to stop compounding.
Related
Stop the next $12,400 night.
One API call (or MCP tool) in front of every agent transaction — APPROVED, BLOCKED, or FLAGGED, deterministic, ~5 ms, fully logged.
See plans — from $99/mo Try a live check