> For the complete documentation index, see [llms.txt](https://docs.calypso.money/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.calypso.money/general/introduction.md).

# Introduction

The Calypso API is a powerful tool that provides programmatic access to a wide range of cryptocurrency payment services. The API is built on top of a robust infrastructure and utilizes state-of-the-art security measures to ensure the safe and secure transfer of sensitive financial data.

The API provides a simple and secure way for merchants to accept and make payments in multiple cryptocurrencies such as Bitcoin, Ethereum, Tron and more.

Calypso API provides powerful and flexible access to cryptocurrency payment functionality. With this API, developers can quickly and easily build custom crypto-based financial applications that meet the specific needs of their business or projects.

You can use this API to access Calypso API endpoints, which can give you access to our products.

The base URL with access to the Calypso API looks like this: **`https://api.calypso.money`**


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