> 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/readme.md).

# GENERAL

## **Overview** <a href="#overview" id="overview"></a>

The General section introduces Calypso Pay documentation for crypto payment processing, supported products, supported blockchains and tokens, network fees, and transaction limits.

Use this section before going deeper into Calypso API guides, UI guides, acquiring flows, payouts, exchange, and reports.

## **Guides** <a href="#guides" id="guides"></a>

| Guide                                                                     | Description                                                |
| ------------------------------------------------------------------------- | ---------------------------------------------------------- |
| [Introduction](https://docs.calypso.money/general/introduction)           | General introduction to Calypso API and its base URL.      |
| [General questions](https://docs.calypso.money/general/general-questions) | Short answers to common questions about Calypso Pay.       |
| [Overview](https://docs.calypso.money/general/overview)                   | High-level overview of Calypso Pay products.               |
| [Fees](https://docs.calypso.money/general/fees)                           | Fixed network fees for incoming and outgoing transactions. |
| [Limits](https://docs.calypso.money/general/limits)                       | Exchange and auto-conversion limits by currency.           |

## **Common references** <a href="#common-references" id="common-references"></a>

| Reference                        | Link                                                                                                                                        |
| -------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------- |
| Supported blockchains and tokens | [Which blockchains and tokens are supported?](https://docs.calypso.money/general/general-questions/which-blockchains-and-tokens-we-support) |
| API authentication               | [API Authentication](https://docs.calypso.money/get-started-with-calypso-api/api-authentication)                                            |
| API reference                    | [API reference](https://docs.calypso.money/api-reference)                                                                                   |


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