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How to Secure an AI Agent's Credit Card

Virtual cards, per-agent limits, transaction firewalls — the five-layer security model.

Your AI agent can charge your credit card. Here is the five-layer security model: (1) Use virtual cards with per-agent limits — never give an agent your primary card. (2) Set per-transaction caps so no single charge can break your budget. (3) Add a spend firewall that evaluates every charge against your rules in real time. (4) Configure real-time alerts for declined or flagged transactions. (5) Require human approval for charges above a threshold you define.

Set up your spend firewall →

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