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

# API Docs

- [Received APIs Intro](https://docs.received.ai/api-docs/received-apis-intro.md)
- [Authentication](https://docs.received.ai/api-docs/authentication.md): Automatically authenticate user information.
- [Products](https://docs.received.ai/api-docs/products.md): Fetch product and their pricing
- [Customers](https://docs.received.ai/api-docs/customers.md): Create, update and fetch contracts information.
- [Contracts](https://docs.received.ai/api-docs/contracts.md): Create, update and fetch contracts information.
- [Invoices](https://docs.received.ai/api-docs/invoices.md): Fetch and update invoices information.
- [Usage Reports](https://docs.received.ai/api-docs/usage-reports.md): Automatically collect usage information.