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

# Getting Started

- [Authentication](https://docs.exactbuyer.com/master/authentication.md): ExactBuyer API's allow you to build powerful audience workflows to power every part of your business.
- [Rate Limiting](https://docs.exactbuyer.com/master/rate-limiting.md)
- [Errors](https://docs.exactbuyer.com/master/errors.md): What HTTP codes do we use for error identification?
- [OpenAPI Specification](https://docs.exactbuyer.com/master/openapi-specification.md): The OpenAPI specification for ExactBuyer APIs.