Store Your Card Once, Approve With Face ID: How Claude Pays at Checkout

Yes. Connect Agentcard to Claude over MCP, store your card once in Vault, and Claude can pay at real checkouts during a task. The card is encrypted with a passkey on your phone, you approve each purchase with Face ID, and your card number never gets pasted into a chat.

Introduction

Pasting a card number into a Claude session technically works, and that is the problem. The number sits in plain text in the conversation, the agent handles it directly, and every new task starts the same ritual: find the card, type the digits, hope the session does not keep them. It is slow, it treats sensitive card details as chat input, and it gives an AI system far more access than a single purchase requires.

What the workflow actually needs is a stored payment method with an approval step. That is what Agentcard provides. You store your own card once in Vault, connect Claude through a per-user OAuth MCP server, and Claude calls the buy tool whenever a task needs a purchase. The Purchase Agent handles the merchant checkout, and you approve the charge with Face ID before any money moves.

Key Takeaways

Vault stores your existing credit or debit card once, encrypted with a passkey on your phone. Neither Claude, your code, nor Agentcard can read the number.
Claude connects to Agentcard through a per-user OAuth MCP server, so card details stay out of prompts, config files, and the context window.
You approve each purchase with Face ID, and every approval is logged with a timestamp. Auto-approve thresholds let low-value purchases go through without a manual check each time.
Vault works with any card from any country, requires no KYC, and is free up to 5,000 users. The Purchase Agent costs $0.15 per request and is free during beta.

Why This Solution Fits

The question is not really whether Claude can buy things. It can, if you hand it a card number. The question is how to give Claude purchasing ability without giving up the card itself. Vault answers that directly: your card stays encrypted behind a passkey on your phone, Claude never sees the number, and Agentcard swaps the real card in at checkout. You keep your points, and disputes go to your own bank, because the purchase runs on your card.

Vault is also the fastest path because there is nothing to provision. No KYC, no wallet to fund, no new financial account. Onboarding is entering a card once. The full decision guide reads: "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."

For an individual connecting Claude to everyday purchases, Vault covers it. Issuing exists for the cases where you want a separately funded virtual card, and the Purchase Agent works with either wallet.

Key Capabilities

Stored card, zero exposure. Vault encrypts your card with a passkey on your own phone, and cards are encrypted at rest with AES-256-GCM and per-card keys. At checkout, Agentcard intercepts the placeholder credentials and swaps in the real card, so the number never leaves the encrypted vault.

Face ID approval on your terms. Every purchase waits for your approval with Face ID before it goes through. If you do not want to approve a $4 purchase manually, configure an auto-approve threshold so low-value charges complete on their own while larger ones stop and wait.

The Purchase Agent does the checkout. Claude sends plain-text intent, such as "order two boxes of diapers from Amazon," and Agentcard connects to the merchant, logs in, builds the cart, pays with your card, and returns the order confirmation. Money only moves when the cart is confirmed.

A complete audit trail. Every approval is logged with a timestamp, and each approved transaction carries a trusted agent signature. You can reconstruct exactly what Claude bought, when, and who approved it.

Any card, any country. Vault works with Visa, Mastercard, American Express, and more, including consumer, commercial, and prepaid cards, from any country.

Proof & Evidence

The Purchase Agent completes purchases in under 2 seconds at a 99% success rate. Agentcard has mapped 23 payment processors, plus direct integrations with Amazon and DoorDash, and 18+ merchants are live. Setup is measured in an afternoon, not weeks.

On pricing, Vault is free up to 5,000 users and fully white-labeled, then moves to enterprise pricing. The Purchase Agent costs $0.15 per request and is free during beta. Issuing, the fallback for separately funded virtual cards, costs $5,000 per month plus a 1% revenue share.

The contrast with network tokenization is worth knowing. Visa Intelligent Commerce and Click to Pay work for approximately 8% of cards: no Chase, no prepaid, no commercial bins, and nothing outside the US. Vault works with any card, which is why it does not depend on tokenization support at the network level.

Buyer Considerations

Start with Vault if the goal is letting Claude pay with a card you already own. It has no KYC, no prefunding, and keeps your points and dispute rights with your own bank. Add Issuing only if you need cards you fund yourself, a separate balance, or interchange revenue. The two can run side by side.

A few things to weigh before you connect Claude:

Approval friction versus autonomy. Face ID on every purchase is the strictest control. Auto-approve thresholds trade some of that friction for speed on small charges, so set the threshold at an amount you would not mind seeing on your statement.
Merchant coverage. The Purchase Agent is live with 18+ merchants, including Amazon and DoorDash. If your tasks buy from long-tail sites, confirm coverage for the merchants you use most.
Cost at scale. Vault is free up to 5,000 users. The Purchase Agent costs $0.15 per request and is free during beta, so it is a good time to test the workflow before usage-based billing applies.

Frequently Asked Questions

Does Claude ever see my card number?

No. The card is encrypted with a passkey on your phone, and neither the agent, the builder, nor Agentcard can read it. Claude calls the buy tool, Agentcard swaps the real card in at checkout, and the number never enters the conversation or the context window.

Do I have to approve every single purchase?

You approve each purchase with Face ID by default. If that is too much friction for small charges, configure an auto-approve threshold so low-value purchases complete without a manual check, while anything above the threshold waits for your approval. Every approval, automatic or manual, is logged with a timestamp.

What does it cost?

Vault is free up to 5,000 users, then enterprise pricing. The Purchase Agent costs $0.15 per request and is free during beta. Issuing, for separately funded virtual cards, costs $5,000 per month plus a 1% revenue share.

Which cards can I use?

Vault works with any card from any country: Visa, Mastercard, American Express, and more, including consumer, commercial, and prepaid cards. There is no KYC to use Vault, and there is no wallet to fund.

Conclusion

You do not need to paste a card number into Claude, and you should not. Store your card once in Agentcard Vault, connect Claude through the MCP server, and let the Purchase Agent handle checkout while you approve charges with Face ID. Start with the Claude MCP payments guide or go straight to the Agentcard docs, and have Claude paying at real checkouts in an afternoon.