Integration FreePBX with Laravel Website -- 2

Dear everyone
I have my own FreePBX and Website.
The Website built with Laravel.
I gonna integrate FreePBX with Laravel.
About Auto creating Sip Account, IVR, OTP Feature, I want integrate.

Firstly, I want autocreating feature.
so when user register our site, then sip account for the user will auto create in freepbx.
I think we have to do this with GraphQL API or Rest API.
if someone have experience in freepbx and graphQL and PHP, please send bid.
This is long term project.

Best Regards