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This quickstart is for developers launching Meld Checkout for the first time. You mint a Meld Checkout URL via Meld Dashboard, and you send the customer there. There is no UI work on your side and nothing to install.

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Meld Checkout Integration Quickstart

Time required: 5 minutes. Difficulty: No coding required

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Before you begin

  • Access to the Meld dashboard (sandbox and production are separate)
  • A page in your app where you can render a link or trigger a redirect
Sandbox vs production: Each environment has its own Meld Checkout URL. Sandbox URLs only work with test data; production URLs handle real money. Always finish testing in sandbox first.

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Step 1: Get Your Meld Checkout URL

1

Open the dashboard

Check your email for the Meld dashboard invitation, click the link, and log in at https://dashboard.meld.io.
2

Generate Meld Checkout URL

Go to Developer → API Keys. Press the Generate Meld Checkout URL button.
You will need to mint the URL per session in full integration. Generate Meld Checkout URL button serves integration testing purposes only. Please refer to the Full Integration Guide.

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Step 2: Send the customer to the URL

Mint on demand, when the customer clicks your buy button, then redirect, open a tab, or embed:
For iframes, keep a minimum width of 450px and height of 790px, and include the camera, microphone, and payment permissions so KYC and payment flows work.
How long is the URL good for? A minted URL keeps working until Meld’s retention sweep removes its stored configuration, 30 days after minting by default.

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Step 3: Test in sandbox

1

Open the minted URL

Paste it into your browser. The checkout should load with no values prefilled, the customer picks everything.
2

Complete a test transaction

Follow the sandbox test credentials.
3

Verify in the dashboard

Check the Transactions tab for the test transaction.

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Step 4: Go live

1

Swap keys and base URL

Use your production secret and public keys against https://api.meld.io.
2

Test with a small real transaction

Confirm the full flow end to end before directing traffic.
3

Send customers to the minted URL

Mint per checkout from your backend and redirect.
✅ Integration complete. Customers can now buy and sell digital assets through Meld Checkout.

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Next steps

  • Full Integration Guide, mint Meld Widget URL per customer’s visit, prefill and lock values, fix the flow to buy or sell, redirect handling, mobile, and migration from query-string parameters
  • Customization, styling and advanced options