# Core Functionality of the Circle APIs
All of Circle's APIs share a common set of core functionality that lets you manage your Circle Account in a programmatic way.
With a Circle Account your business can deposit traditional money from 50+ countries and seamlessly convert them into ["digital currency dollars": USDC](🔗). You can then use USDC for everyday payments and treasury flows.
All Circle APIs allow you to:
Transfer digital currency (USDC) in and out of your account.
Register your own business bank accounts - if you have them.
Make transfers from / to your business bank account while seamlessly converting those funds across digital currency and traditional fiat.
Set up automated rules for funds flows such as _"if a deposit is received from this bank account, then transfer digital currency to this blockchain address"_.
# Getting Started
You can check our [quickstart guide on sending account funds externally](🔗) to understand how to use our API to transfer funds to other platforms via USDC on-chain transfers.
# Ready for the next step?
If you are in advanced stages of experimenting with our APIs and want to plan moving to production, start by [applying for a Circle Account](🔗) and subsequently [reach out to sales](🔗). We'll be happy to walk you through to the next steps.
We can't wait to see what you are going to build!