Agent Vault

Agent Vault is an AI security tool that lets AI agents make payments and log into websites without ever touching real card numbers or passwords. It sits between your agents and merchants as a vault: agents receive mock tokens described as "hollow, no value inside" instead of real card details, and a Playwright drop-in import swaps the card data in automatically, so an agent can book a flight or buy an item without the credential leaving the vault. You keep control with per-card rules — merchant allowlists, daily, weekly and monthly spend caps, and instant revocation — and each agent session runs in its own browser context where cookies, storage and cache never cross between sessions. Card numbers are tokenized through Basis Theory, a PCI-DSS Level 1 vault, and one credential set works across every agent you run, whether that is Claude, a Playwright script, or another framework. On BestAIFor it fits teams deploying transacting agents who need spend limits and credential isolation rather than handing an agent a live card. It is built for development teams, researchers, and businesses letting agents transact online.

Letting AI agents make payments and log into sites under spend caps and credential isolation, without exposing real cards or passwords.