Setup Cash App - Join Markt Docs

Cash App on Join Markt is a manual confirmation flow — not an automated card processor webhook.

Routes

Route	Who
`POST /api/cash-app/create-checkout`	Buyer / checkout UI
`POST /api/cash-app/mark-sent`	Buyer marks payment sent
`POST /api/cash-app/confirm`	Seller session confirms receipt

Flow

Checkout creates a Cash App session with store instructions / cashtag.
Buyer pays externally and clicks mark-sent.
Seller reviews in the dashboard and confirms.
Confirm path completes the order and triggers fulfillment.

Setup

Enable Cash App in Payment methods.
Configure the cashtag / instructions shown to buyers.
Train support staff to confirm only after funds are visible.

Security notes

confirm requires a seller session — do not expose it on merchant sites.
Rate limits apply to create / mark-sent like other checkout routes.
Treat mark-sent as a signal, not proof of payment.

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