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mobile · Optimism

Flutter on Optimism

Accept USDT & USDC through Flutter with settlement on Optimism. Integrate Zateway with Flutter. Flutter WebView or redirect to hosted checkout. 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 Flutter (Optimism) settlements.
  3. Create a payment session via API, plugin, or payment link for Flutter (Optimism).
  4. Redirect customers to hosted checkout or embed the widget in Flutter (Optimism).
  5. Verify HMAC-signed webhooks and fulfill the order in Flutter (Optimism).
  6. Select Optimism when creating the payment session for lowest surprise fees.
POST https://zateway.com/api/v1/sessions with x-api-key — then open checkoutUrl from Flutter.
// Prefer chain: "optimism" for Flutter checkout
Integrate Flutter on Optimism

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