Firebase on Polygon

Accept USDT & USDC through Firebase with settlement on Polygon. Integrate Zateway with Firebase. Cloud Functions + Zateway webhooks. Non-custodial USDT & USDC on Polygon, Solana, Base, BSC, Arbitrum, Optimism.

Steps

1. Create a Zateway account and copy your API key.
2. Connect your self-custody wallet address for Firebase (Polygon) settlements.
3. Create a payment session via API, plugin, or payment link for Firebase (Polygon).
4. Redirect customers to hosted checkout or embed the widget in Firebase (Polygon).
5. Verify HMAC-signed webhooks and fulfill the order in Firebase (Polygon).
6. Select Polygon when creating the payment session for lowest surprise fees.

POST https://zateway.com/api/v1/sessions with x-api-key — then open checkoutUrl from Firebase.
// Prefer chain: "polygon" for Firebase checkout