Using Orbiter without using the website?

Apologies if this is the wrong place, I've looked for where to ask but don't see a subreddit of their own.

I frequently use Orbiter Finance to bridge between networks/layers, and it's honestly fantastic. I now wanted to implement it into a program, but am not sure how.

Do I just create a transaction from my MATIC network wallet, send it to the same address that it sends to when I use the website itself, and it will send back out the ETH to my ETH wallet on the same address? It seems like that's what it does, but am I missing some aspect where if I send in funds it would not return them?

Any help would be much appreciated.