# Fundamentals

- [Authentication](/fundamentals/authentication.md): Information about sending authenticated requests
- [Rate limits](/fundamentals/rate-limits.md): Information about our API rate limitation
- [Limitations](/fundamentals/limitations.md)
- [Date limitations](/fundamentals/limitations/date-limitations.md)
- [URL file limitations](/fundamentals/limitations/url-file-limitations.md)
- [Pagination limitations](/fundamentals/limitations/pagination-limitations.md)