Do I have to use the SDK? - AquaticInformatics/aquarius-sdk-net GitHub Wiki
No. If your integration can send and receive HTTP requests, then you can consume the AQUARIUS REST APIs directly.
Our SDKs provide some glue code for you (mainly handling all the JSON serialization / deserialization), but if you prefer a different REST client libary, a different JSON library, or have other in-house tooling for REST API automation, you are free to use those technologies instead of our open-sourced SDKs.
If you choose not to use our SDK, you'll likely want to read the Do you have an SDK for programming language X? page to get an idea of the recommended tasks involved with writing your own SDK.