> ## Documentation Index
> Fetch the complete documentation index at: https://docs.brale.xyz/llms.txt
> Use this file to discover all available pages before exploring further.

# API Concepts Overview

> An overview of accounts, addresses, transfers, automations, and other key resources in the Brale API.

* [Accounts](/key-concepts/accounts) - Your customers
* [Addresses](/key-concepts/addresses) - A single resource that represents both onchain wallet addresses and offchain fiat accounts. Use `address_id` everywhere a source or destination is needed.
* [Financial Institutions (Legacy)](/key-concepts/financial-institutions) - Financial accounts that can receive or send funds. Kept for backwards compatibility - new integrations should use Addresses.
* [Transfers](/key-concepts/transfers) - Convert into, out of, and between stablecoins and fiat
* [Automations](/key-concepts/automations) - A unique bank account number that will send deposited fiat funds to a pre-set onchain address
* [Idempotency](/key-concepts/idempotency) - Ensure each POST request is processed only once