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FedNow is the Federal Reserve’s real-time payment service. The shape is identical to RTP, plus an optional memo field for the receiver. The service caps FedNow at $10,000,000 per transfer (the current Fed limit). POST /embedded-banking/v1/money-movements/fednow
Example Request Body
The optional reference is your own identifier, echoed back on the transfer so you can tie it to a record in your system. It doesn’t make a retry safe. See Reference.
Like RTP, FedNow is irrevocable: a duplicate send cannot be recalled. Always include an idempotencyKey so a retried request returns the original transfer instead of moving the funds twice. See idempotency.
FedNow and RTP are complementary; a given receiving bank may participate in one, both, or neither. Pick the rail by the receiver’s network participation, falling back to ACH when neither real-time rail is available.
Required scope: embedded:transfer:write and payment_rail:fednow.