<MoonPayBuyButton />

Inline card buy button. Render it wherever it should appear in your layout.

<MoonPayBuyButton> renders a card payment button inline in your layout.

BuyButtonSection.tsx

import React from "react";
import {
  MoonPayBuyButton,
  MoonPayChallenge,
  type BuyButtonEvent,
} from "@moonpay/platform-sdk-react-native";

export function BuyButtonSection({
  quoteSignature,
}: {
  quoteSignature: string;
}) {
  const [challengeUrl, setChallengeUrl] = React.useState<string | null>(null);

  const handleEvent = (event: BuyButtonEvent) => {
    switch (event.kind) {
      case "buttonPressed":
        // Customer tapped the button — show a loading state or fire analytics.
        break;
      case "complete":
        console.log(event.payload.transaction);
        break;
      case "challenge":
        setChallengeUrl(event.payload.url);
        break;
      case "error":
        console.error(event.payload.code, event.payload.message);
        break;
    }
  };

  return (
    <>
      <MoonPayBuyButton quote={quoteSignature} onEvent={handleEvent} />
      {challengeUrl && (
        <MoonPayChallenge
          url={challengeUrl}
          onEvent={(e) => {
            if (e.kind === "complete" || e.kind === "cancelled") {
              setChallengeUrl(null);
            }
          }}
        />
      )}
    </>
  );
}

---

Props

Prop	Type	Required	Default	Description
quote	string	✅	—	Quote signature from getQuote(). Reactive — updating this prop pushes the new signature into the frame without a remount.
externalTransactionId	string		—	Partner-assigned identifier for this transaction attempt. Mount-time only.
onEvent	(event: BuyButtonEvent) => void		—	Callback for buy button lifecycle events. See BuyButtonEvent.
style	ViewStyle		height: 48	Container style.

BuyButtonEvent

Use event.kind to handle each event.

kind	Payload	When you receive it
"buttonPressed"	—	The customer tapped the pay button, before the payment sheet appears. An intent-to-buy signal with no payload — it still fires if the customer then cancels. Not a purchase outcome; listen for "complete" for the result.
"complete"	{ transaction: FrameTransaction }	The payment finished. Inspect FrameTransaction for the outcome.
"challenge"	{ kind: "frame"; url: string }	Verification required. Render <MoonPayChallenge> with the provided URL.
"error"	{ code: string; message: string }	The flow encountered an error.

When the quote expires, the frame emits an "error" event with code: "quoteExpired". Fetch a new quote and update the quote prop to retry.