Build Terraform Provider for API

I need someone to build a terraform provider for an API that we use. The API is already declarative so I believe it should be simple to implement. We already have a CLI that uses this API as a reference (link removed) and the source code for the Cli is open. I want to initially support the ability to sync routes. If I have a route yaml file I want to use a terraform provider to apply that to a given vault on our system. Terraform apply should sync the route config onto the vault.