# Valtu Wallet

> Custodial wallet infrastructure for fintechs: a wallet per customer on 8 networks, deposits with signed webhooks, sweeps, gas station, and payouts under the customer's own approval rules. Keys live in AWS Nitro enclaves.

Every API call is signed with a P-256 API key (see the API guide). Amounts are integer strings in base units. SDK: @valtu/wallet-kit. OpenAPI: https://valtu.io/docs/openapi.json. Full text of every page: https://valtu.io/docs/llms-full.txt

## Docs

- [Overview](https://valtu.io/docs): Build deposits, payouts and webhooks on Valtu Wallet: the integration guide, the API guide and the Wallet kit SDK.
- [Solutions](https://valtu.io/docs/solutions): Reference designs for building on Valtu Wallet: payment acceptance, exchanges and brokers, payouts and remittance, and treasury operations.
- [Payment acceptance](https://valtu.io/docs/solutions/payments): Reference design for PSPs and merchants accepting stablecoin payments on Valtu Wallet: per-customer addresses, confirmations, settlement sweeps and refunds.
- [Exchanges and brokers](https://valtu.io/docs/solutions/exchanges): Reference design for exchanges, brokers and wallets apps on Valtu Wallet: deposit addresses per account, an internal ledger, sweeps to treasury and controlled withdrawals.
- [Payouts and remittance](https://valtu.io/docs/solutions/payouts): Reference design for payroll, marketplace and cross-border payouts on Valtu Wallet: batch submission, idempotency, approvals, network fees and reconciliation.
- [Treasury operations](https://valtu.io/docs/solutions/treasury): Reference design for managing company funds on Valtu Wallet: reserves, hot-wallet float, approval groups, address books, gas and alerts.
- [Integration guide](https://valtu.io/docs/integration): Integrate Valtu Wallet step by step: workspace, API key, customer wallets, deposits over webhooks, sweeps, gas, payouts and going live.
- [API guide](https://valtu.io/docs/api): Valtu Wallet API v1 reference: request signing, keys and scopes, errors, pagination, wallets, transfers, deposits, assets and webhooks.
- [Wallet kit](https://valtu.io/docs/wallet-kit): @valtu/wallet-kit: the Valtu Wallet SDK for Node.js and TypeScript. Signed calls, safe retries, webhook verification and amount conversion.
- [Whitepaper](https://valtu.io/docs/whitepaper): Valtu Wallet whitepaper: how keys are generated, protected and used inside attested hardware enclaves, how requests are authorized, and the current limits of the system.
- [Changelog](https://valtu.io/docs/changelog): Changes to the Valtu Wallet API, the Wallet kit SDK, the dashboard and the docs.