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nuez docs

Wallet & CVU

What is a CVU?

Section titled “What is a CVU?”

A CVU (Clave Virtual Uniforme) is a 22-digit identifier for virtual accounts in Argentina’s financial system. It works exactly like a CBU — you can receive transfers from any Argentine bank, Mercado Pago, or Ualá using your CVU.

nuez gives every account its own CVU. This is the address where you fund your wallet.

Funding your wallet

Section titled “Funding your wallet”

Transfer any amount to your CVU from any Argentine bank or wallet. Funds arrive via Transferencias 3.0 — the Argentine real-time payment rail — and are available immediately.

You’ll find your CVU in the dashboard under Wallet.

Balance

Section titled “Balance”

Your wallet has a single ARS balance. All transfers debit from this balance. nuez does not extend credit — if the balance is insufficient, the transfer is rejected before reaching the rail.

Check balance via:

Multi-key, single wallet

Section titled “Multi-key, single wallet”

Multiple API keys can share the same wallet. Each key has its own policy (threshold, scopes, allowlist), but they all draw from the same balance. Monitor total spending across keys in the dashboard.