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Meld’s buy and sell flows will let a partner move a user between fiat and crypto inside a Sumvin-verified identity envelope, without the partner handling card rails, KYC collection, or settlement.

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What it enables

  • Buy — fiat to crypto, as a hosted Meld session anchored to a Sumvin user.
  • Sell — crypto to fiat, as the inverse hosted session against the same user.
Both flows inherit the user’s KYC state via Meld KYC passthrough, so the partner does not re-collect identity data.

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Who it’s for

Consumer app builders and wallet partners who need fiat movement without owning the ramp. The crypto wallet card reference application is the primary consumer of this surface.
Meld buy and sell flows are in early access. Partners scoping integrations now help us prioritise corridor coverage, payment methods, and session UX for launch — contact your account manager to join the cohort.

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Where to start

  1. Meld overview — how the integration is composed end-to-end.
  2. Client setup — configure the Meld client against a Sumvin user.
  3. KYC passthrough — inherit Sumvin KYC into Meld sessions without re-verifying.
  4. Crypto wallet card — the reference application this unlocks.