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

# Introduction

> Integrate BillBuddy payments and subscriptions through a unified API

BillBuddy provides payment and subscription services for merchants and integration partners. Use a unified API to connect direct payments, batch transactions, transaction queries and subscription management to your existing systems.

From one-off payments to recurring debits, BillBuddy supports card payments, payment tokens, bank account payments and scheduled transactions. Hosted subscription pages let customers enter payment details, authorize debits and activate subscriptions. Availability depends on the individual endpoint and the services enabled for your account.

This documentation gives third-party developers authentication guidance, complete field definitions, business restrictions, and request and response examples. Read the **Quickstart** to obtain credentials and use an access token, or explore the **API reference** for endpoint details and request examples.

> **[Quickstart](https://docs.billbuddyhq.com/en/quickstart.md)**
>
> Obtain credentials and an access token, then review authentication and request conventions.

> **[API reference](https://docs.billbuddyhq.com/en/api-reference/transactions/direct-pay.md)**
>
> Explore field definitions, business restrictions, and request and response examples.


This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.