> For the complete documentation index, see [llms.txt](https://docs.on.nexus/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.on.nexus/dotswap/developers/l1-swap-and-liquidity-apis/api-access.md).

# API Access

### Access Control

* When using the `/brc20swap/swap_info` interface, the access frequency must be 1 request every 5 seconds or longer.
* If the access frequency limit is violated, a `429` status code will be returned.
* Upon receiving a `429` status code, you are responsible for ceasing further requests and refraining from abusing the API.