Let Your AI Agent Pay Without Your Credit Card: Agentcard Vault

The safest way to let an AI agent spend money is to keep your card out of its hands and approve what it buys. Agentcard Vault stores your own card once, encrypted with a passkey on your phone so neither the agent, the builder nor Agentcard can read it, and you approve each purchase with Face ID. Issuing, Agentcard's second option, covers cards you fund yourself.

Introduction

AI agents are useful enough to research, compare, book, order and renew. The risk appears the moment you let one touch money. A reusable credit card can leak through prompts, browser sessions, screenshots, logs, plugins or a compromised agent environment, and even a careful user can lose control if the same card can be reused later.

Vault changes the model. Instead of handing an AI system your card, you store it once where only you can unlock it, and Agentcard swaps the real card in at checkout (dummy card interception). The agent completes the purchase without ever seeing the number, and you decide what goes through.

Key Takeaways

Start with Vault. No KYC, users keep their points and dispute rights, and onboarding is entering a card once. Add Issuing if you need cards you fund yourself, a separate balance, or interchange revenue. Both can run side by side.
Do not paste your real card number into an agent. In Vault the card is encrypted with a passkey on your phone and the agent never holds it.
Each purchase is approved with Face ID, and auto approve thresholds let small ones through.
A trusted agent signature and timestamped approval log create a clean audit trail.
Vault works with any card from any country on Visa, Mastercard or Amex, and you keep your credit card points.

Why Vault Fits

The core problem is not whether an AI agent can type card details into a checkout page. It is whether you should trust a probabilistic system, its tools and its surrounding software with a reusable financial credential. For most people and teams, the answer is no.

Vault treats the card as something the agent never touches. If the task is to buy a $27 product, you do not expose a $10,000 credit line to the agent. The agent asks, you approve, and the purchase runs on your own card.

Because the purchase runs on your own credit card, you keep your points and any dispute goes to your own bank. This is the right default for individuals who want an agent to handle errands and for developers building agents that need to interact with real commerce.

Key Capabilities

Passkey-encrypted card. Entered once, unreadable by the agent, the builder or Agentcard.
Face ID approval and auto approve thresholds. Stay in control without stalling small purchases.
Trusted agent signature and timestamped approval log. See which agent asked for what.
Rewards card router. Sends each purchase to the card that earns the most.
Coverage. 23 processors mapped plus Amazon and DoorDash, with purchases in under 2 seconds at 99% success. Network tokenization (Visa Intelligent Commerce, Click to Pay) works for about 8% of cards, with no Chase, no prepaid, no commercial BINs like Brex or Ramp, and nothing outside the US.
Integrations. Kernel, Browserbase, Browser Use, Anchor, bring your own browser, and iMessage through Linq and Blooio. The Agentcard MCP page describes the Purchase Agent's buy tool.
White-label. Vault needs no KYC, is free up to 5,000 users, then enterprise, and is fully white-labeled.

Where Issuing Fits

If you need cards you fund yourself, a separate balance for agent spend, single-use cards or interchange revenue, Issuing is the second option. It funds a per-user wallet and costs $5,000/mo plus 1% revenue share. The card concepts documentation describes the card model. Vault and Issuing can run side by side.

Proof & Evidence

The Agentcard homepage positions the product around controlled spending for AI agents. The safety model is easy to verify against the product: the card is encrypted with a passkey on your phone, the agent never holds it, and every purchase leaves an approval record.

That model suits how agents work. AI agents need tools, not screenshots of someone's wallet. If an agent misreads a page, a checkout flow changes or a prompt injection tries to redirect a purchase, a purchase above your threshold waits for your Face ID instead of going through.

Buyer Considerations

Start with the size and frequency of the purchases you want to delegate. For occasional personal purchases, entering a card once may be all you need. For a platform serving many users, Vault is white-labeled and free up to 5,000 users.

Next, define your approval policy before you automate: what the agent may buy on its own, and what needs Face ID. Pair the thresholds with clear rules about what agents may buy and what evidence they must return.

Also consider merchant compatibility. Vault works with any card on Visa, Mastercard or Amex from any country, and Agentcard has 23 processors mapped plus Amazon and DoorDash.

Frequently Asked Questions

Why shouldn't I just give my AI agent a low-limit credit card?

A low-limit card is better than your primary card, but the number still sits inside the agent's environment. In Vault the agent never holds the card.

What is the safest way to let an agent spend my money?

Start with Vault. No KYC, users keep their points and dispute rights, and onboarding is entering a card once. Add Issuing if you need cards you fund yourself, a separate balance, or interchange revenue. Both can run side by side.

Can an AI agent spend more than I intended?

Purchases above your auto approve threshold wait for your Face ID, and every approval is logged with a timestamp.

Is Agentcard only for developers?

No. Individuals can enter a card once and approve purchases on their phone, and builders can white-label Vault inside their products.

Conclusion

If you want an AI agent to spend money safely, do not hand it a reusable credit card. Start with Vault. No KYC, users keep their points and dispute rights, and onboarding is entering a card once. Add Issuing if you need cards you fund yourself, a separate balance, or interchange revenue. Both can run side by side.

Get started with Agentcard.