Quartermaster holds the keys to your stores. When your AI agent wants to buy something, you approve it once, and it gets a key cut for one shop, one exact amount and ten minutes. Then the key stops working.
Finds the matcha and asks the shop to check out. The shop answers with the exact total: £34.00.
Sends you an approval link: what, from whom, how much, and why the agent wants it.
Approve. If your bank asks for a check, you do it right there, on your own phone.
Cuts a key: a Stripe shared payment token that only Particular Kind can use, only for £34.00, only until 09:51.
Charges the token and ships the tin. It never sees your card.
Expires. There's nothing left to steal or reuse.
Each key opens a single store. No other merchant can turn it.
£34.00 means £34.00. Not a penny of headroom.
Unused keys stop working on their own.
Your card is held by Stripe. Shops only ever get the key.