Per-Transaction Cap Calculator

What cap blocks the catastrophic single call? Enter your max tolerable single-transaction loss and see recommended caps across risk levels.

Tight (20% buffer)
Medium (50% buffer)
Loose (80% buffer)

The per-transaction cap is the single most important rule. Pair with velocity cap (catches loops) and daily total (catches aggregate).

The three caps every agent needs

CapCatchesWithout it
Per-transactionOne catastrophic call$500 GPU instance, $200 API batch
VelocityRetry cascade50x loop overnight
Daily totalAggregate burnDeath by small calls

Frequently asked questions

How do I know my worst-case transaction?

Audit your agent's tool call paths. The worst case is the most expensive single action: provisioning a GPU ($2-10/hr), calling an enterprise API ($1-50/call). Set the cap at 50% of that amount.

Can I have different caps per agent?

Yes. sipi.bot supports per-agent policies keyed to the agent's API key.

Stop runaway agent spend before it happens

sipi.bot is a pre-spend firewall for autonomous AI agents — approve, block, or flag every transaction in under 5ms.

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