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Getting Started
Overview
Quick Start
Sandbox
Core API Concepts
Core API Concepts
Authentication
Idempotence
Customers
Customers API
Customers API 2025 Winter Release
KYC Links for New Customers
Additional Requirements for Existing Customers
Endorsements
Rejection Reasons
External Accounts
Developer Fees
Precision and Rounding
Receipts
Transfers
Fiat to Stablecoin (Crypto On-Ramp)
Stablecoin to Fiat (Crypto Off-Ramp)
Stablecoin to Stablecoin
Fetching Transfers
Deleting Transfers
Transfer Features
Liquidation Address
Drains
Webhooks
Event Structure
Webhook Event Signature Verification
Virtual Accounts
Static Memos
Fiat Deposit Instructions
Handling deposit errors
SEPA/Euro Transactions
SWIFT Transactions (Beta)
Prefunded Accounts
Products
Overview
Developer Dashboard
USD to Stablecoin
Stablecoin to USD
Stablecoin to Stablecoin Conversion
Stablecoin Issuance
USDB
Custom Stablecoin ("xUSD")
Bridge Stablecoins FAQ
Wallets
Wallets - Example Webhooks
Third Party Payments
Cards
Core Concepts
Quick start: creating your first card
Advanced money movement flows
Webhooks
Sandbox Integration
Testing webhooks in sandbox
Additional functionality
Freezing a card account
Managing PINs
Customizing card art
Marketing, UX and Compliance
What we support
Stablecoins and Blockchains
Fiat payment methods
Geographies
Compliance Requirements
Individuals
Individual Identification Numbers by Country
Businesses
Business Entity Types
Business Ownership Documents
Business Formation Documents
Business Identification Numbers by Region
High Risk Business Activities
DAOs
Proof of Address Requirements
Supported documents
User FAQs
Virtual Accounts FAQs
Fees
Bridge Pricing
Transaction Costs
Developer Fees
Logistics
Settlement
Support
Holidays
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Flexible configuration options for the Transfers API
