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This section is for developers integrating any of Meld’s three crypto products (White-Label API, Meld Checkout, or Virtual Account). The pages here cover the cross-cutting concepts — webhooks, transaction statuses, sandbox testing, and provider onboarding — you’ll need regardless of which product you picked.
  • Webhook events — the events Meld sends you when transactions are created and updated, with payload examples
  • Webhook authentication — how to verify webhook signatures
  • Transaction statuses — the full list of crypto transaction statuses and what each one means
  • Service-provider setup — how to add additional onramps for greater coverage and redundancy
  • Sandbox guide — test cards, wallets, KYC triggers, and provider-specific sandbox notes
  • Provider Specific Behavior — information on provider specific behavior