One shop per key
Every key is cut for a single store. No other merchant can turn it, and neither can your agent.
Exact amount, to the penny
£89.00 means £89.00. If the basket changes, your agent has to ask you again.
10 minutes, then it's gone
Unused keys expire on their own. Your card stays with Stripe the whole time.
Your agent shops. You hold the keys.
Connect any AI agent that can call an API. It does the searching and the checkout; paying always comes back to you.
Your agent asks
It finds what you wanted and sends you the shop, the item and the exact total.
You approve
One tap on your phone. If your bank wants a check, it happens right there.
The shop gets a key
It charges the key, ships your order and never sees your card.
Built on Stripe. Designed to hold nothing.
The safest card is the one nobody else has. Quartermaster never sees your card number, never holds a balance, and gives shops a key that only works once.
Card details stay with Stripe
Your card is entered in Stripe's own secure form and stored by Stripe, a PCI DSS Level 1 service provider. It never touches our servers.
Your bank still checks
Payments go through the normal card rails, so your bank's 3-D Secure checks apply as they would at any UK checkout.
Keys, not cards
Shops receive a Stripe shared payment token limited to one merchant, one exact amount and ten minutes.
No money held
Quartermaster isn't a bank or an e-money wallet. Funds move from your card to the shop and never sit with us.