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

# Support

- [Supported Chains](https://beosinofficials-organization.gitbook.io/beosin-api-documentation/support/supported-chains.md): Display the blockchain platform and token info supported by the system. The current API can only query the following tokens and information of these chains.
- [Risk Type List](https://beosinofficials-organization.gitbook.io/beosin-api-documentation/support/risk-type-list.md)
- [Error Code](https://beosinofficials-organization.gitbook.io/beosin-api-documentation/support/error-code.md): An API call that encounters an error will return code  and display the cause of the error under the msg field.
- [Rate Limits](https://beosinofficials-organization.gitbook.io/beosin-api-documentation/support/rate-limits.md): Reference for various API tiers and their rate limits
- [Contact Us](https://beosinofficials-organization.gitbook.io/beosin-api-documentation/support/contact-us.md)