> ## Documentation Index
> Fetch the complete documentation index at: https://help.arcus.xyz/llms.txt
> Use this file to discover all available pages before exploring further.

# Is there an API?

Yes. Full REST and WebSocket APIs at launch, covering order types, batch operations, sub-accounts, rate limits, and authentication.

Built for high-frequency and systematic trading. Docs at [https://docs.arcus.xyz/](https://docs.arcus.xyz/).