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Supported Payment Methods

Join Markt checkout routes payment through seller-configured gateways. Settlement converges on completeOrderFromGateway.

Setup guides

Card and hosted processors

Crypto

Manual flows

PayPal F&F, Venmo F&F, Cash App, Custom payment: create + mark-sent + seller confirm (or reject).

Rules

  • Create routes are public checkout-lifecycle and rate limited.
  • Webhooks must verify signatures.
  • Amount checks reject mismatched client totals.
  • Methods appear only when enabled for the store.
See Incoming Webhooks and Order Status.