# 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.


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.on.nexus/dotswap/developers/l1-swap-and-liquidity-apis/api-access.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.