Spend Firewall Glossary

Proprietary vocabulary that defines how AI agent spend control works. Every term is a concept sipi.bot enforces natively.

Core concepts

Spend firewall

A pre-spend policy layer evaluating every agent transaction against your rules before money moves.

Agent spend policy

The set of rules governing what an agent is allowed to spend โ€” caps, limits, and allowlists.

Velocity limit

Caps transactions per time window. Primary defense against retry loops.

Merchant allowlist

Blocks unknown vendors by default. Defense against prompt-injection-driven spend.

Per-transaction limit

A hard ceiling on any single spend. Catches the catastrophic one-off.

Daily spend ceiling

Rolling budget across all transactions in a 24-hour window.

Monitoring & compliance

Agent audit trail

Tamper-evident, append-only log of every spend decision.

Spend anomaly

Transaction pattern deviating from expected. Caught pre-spend or observed post-hoc.

Cost anomaly

Unexpected cost spike in agent spending patterns.

Runaway cost

Uncontrolled agent spend โ€” typically from retry loops or unattended sessions.

Agent cost center

Treating each agent as a trackable cost center with its own budget and audit trail.

Token burn rate

Rate at which an agent consumes LLM tokens, measured in tokens or dollars per time unit.

Operational controls

Circuit breaker

Automatic halt when a spend threshold or anomaly is detected.

Spend circuit breaker

Emergency stop on all agent spend when a critical threshold is breached.

Transaction cap

Maximum allowed amount for a single transaction.

Agent budget

The total spending authority assigned to a specific agent.

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