On-ramp: Pix to stablecoin
Your customer pays a Pix and receives USDT or USDC in the wallet seconds after confirmation.
Run with VASPs authorized by Brazil's Central Bank
CaaS: stablecoins inside your product, via API
Woovi's Crypto as a Service (CaaS) is the API that lets your company buy, sell, hold and transfer stablecoins such as USDT and USDC, with Brazilian reais in and out through Pix. One integration, with settlement and custody handled by regulated Brazilian virtual asset service providers (PSAVs, Brazil's VASPs).
- Pix → stablecoin in one call
- KYC, KYT and Travel Rule
- Real-time webhooks
Woovi Instituição de Pagamento, authorized by Brazil's Central Bank · Direct Pix participant · Code 694
You payR$ 10,000.00BRL
You receive1,851.85 USDCUSDC
- Rate
- 1 USDC = R$ 5.40
- Network
- Polygon
- Settlement
- Partner VASP
POST /api/v1/stablecoin/depositPENDING
USDT · USDCDollar-pegged stablecoins
Pix 24/7Reais in and out at any time
1 integrationPix, quote, wallet and on-chain transfer
PSAVsPartners authorized by Brazil's Central Bank
Crypto as a Service
What is CaaS and how does Woovi deliver it to your system?
CaaS is crypto and stablecoin infrastructure offered through an API. Your company puts stablecoins inside its own product without its own PSAV (VASP) authorization, without building custody and without dealing with exchanges directly. Woovi bridges Pix and the blockchain; partner PSAVs buy, sell and hold the assets.
- 01
Your customer pays in reais
You create a Pix charge through the API. The money lands in your Woovi account.
- 02
The quote is locked
The API returns a firm quote, fees included, before confirmation.
- 03
The PSAV settles the order
The regulated partner buys the stablecoin and records the operation with full traceability.
- 04
The asset reaches its destination
Credited to the customer's wallet or sent on-chain. You get a webhook with the transaction hash.
Use cases
What you can build with stablecoins
The same API blocks serve fintechs, marketplaces, exchanges, cross-border payment companies and treasury platforms.
Off-ramp: stablecoin to Pix
Sell stablecoins and credit reais via Pix to the customer's own Pix key.
Per-customer wallets
Sub-accounts with a stablecoin balance for each end user, with their own statement and limits.
Cross-border payments
Pay suppliers and contractors abroad in digital dollars, settled on-chain at any time.
Digital-dollar treasury
Protect company cash from FX swings by keeping part of the balance in stablecoins.
Crypto checkout
Accept stablecoins at checkout and get paid in reais or in stablecoin, your choice.
Regulated partners
Crypto with real regulation: we only work with authorized PSAVs
Law 14,478/2022 and Central Bank Resolutions 519, 520 and 521 set the rules for virtual asset service providers (PSAVs) in Brazil. Woovi runs Pix and the API. Buying, selling, holding and transferring stablecoins stays with partner PSAVs authorized by Brazil's Central Bank.
- Asset segregation: your customers' assets are kept apart from the PSAV's own assets.
- Daily reconciliation: internal balances checked against on-chain balances every day.
- Traceability: every order has a correlationId, a Pix receipt and a transaction hash.
Want to offer virtual asset services without building a PSAV? See PSAV as a Service.
ON-CHAIN SETTLEMENT
Who does what
- Your companyProduct and customer experience
- WooviAPI, Pix, KYC and reconciliation
- PSAVCrypto exchange, custody and on-chain
Partner PSAVsAvenia
Flows
From Pix to the blockchain, step by step
Your customer pays in reais and receives stablecoin in the wallet or at an external address.
- 01YOUR SYSTEM
Requests a quote
Amount in reais, asset and destination network.
- 02WOOVI
Receives the Pix
QR Code and copy-and-paste, confirmed in seconds.
- 03CUSTOMER
Pays the Pix
At any time, weekends included.
- 04PSAV
Buys the asset
The partner executes and records the trade.
- 05BLOCKCHAIN
Credit or transfer
Wallet balance or on-chain transfer with hash.
The customer sells stablecoin and receives reais via Pix to a key in their own name.
- 01YOUR SYSTEM
Requests a quote
Asset amount and destination Pix key.
- 02WOOVI
Checks the key
Pix key ownership and risk rules.
- 03PSAV
Sells the asset
Balance debited and converted to reais.
- 04WOOVI
Sends the Pix
Payment to the given key.
- 05YOUR SYSTEM
Gets the webhook
Receipt with the Pix endToEndId.
Send stablecoin from a custodied wallet to an external address, with KYT and Travel Rule.
- 01YOUR SYSTEM
Sets the destination
Address, network and amount.
- 02WOOVI
Screens the risk
KYT on the address and customer limits.
- 03PSAV
Signs the transaction
Out of segregated custody.
- 04BLOCKCHAIN
Confirms
Transaction included and confirmed.
- 05YOUR SYSTEM
Gets the hash
Webhook with the hash and network fees.
For developers
A REST API for stablecoins
Same AppID authentication, same correlationId pattern and same webhooks you already use for Woovi Pix charges.
- Real-time webhooks
- Idempotency by correlationId
- Public documentation
- Integration support
Stablecoin quoteGET
curl "https://api.woovi.com/api/v1/stablecoin/quote?value=1000000¤cy=USDC&network=POLYGON" \
-H "Authorization: $WOOVI_APP_ID"RESPONSE200 OK
{
"status": "ok",
"quote": {
"inputCurrency": "BRL",
"inputAmount": 10000,
"outputCurrency": "USDC",
"outputAmount": "[amount]",
"rate": "[rate]"
}
}Illustrative example. Official fields and responses at developers.woovi.com.
Compliance
Security and anti-money laundering from the first call
KYC and KYB
Identity checks for people and companies by link or API, with your risk policies.
On-chain KYT
Risk screening of source and destination wallets before every transfer or credit.
Travel Rule
Sender and beneficiary data exchanged between providers, as regulation requires.
Limits and monitoring
Per-customer limits, blocking rules and suspicious activity reporting.
Questions about Woovi's CaaS
Crypto infrastructure offered through an API. Your company adds stablecoin buying, selling, custody and transfers to its own product without its own authorization as a PSAV (VASP) in Brazil.
Woovi is a Payment Institution authorized by Brazil's Central Bank and handles Pix, the API and reconciliation. Virtual asset operations are executed by partner PSAVs authorized by the Central Bank.
CaaS is the stablecoin API you put in your product. PSAV as a Service is the full model for companies that want to offer virtual asset services without building a PSAV: it includes CaaS, Pix, the account, KYC and compliance.
USDT on Polygon, Ethereum, Celo, Tron and BNB Chain, and USDC on Polygon, Ethereum, Base, Celo and BNB Chain. The up-to-date list is in the API docs.
Yes. Every end customer is identified (KYC for people, KYB for companies) before trading, and external wallets go through on-chain risk screening (KYT).
Pix confirms in seconds. The custodied wallet is credited right after the order executes. On-chain transfers depend on the chosen network.
Put stablecoins in your product with regulatory peace of mind
Talk to an expert to review your use case, expected volumes and the setup with partner PSAVs.
Virtual asset services provided by partner PSAVs authorized by Brazil's Central Bank. Stablecoins are not legal tender and are not covered by the FGC.
