coinPayments API "Interface"

I need an interface written in CFML that my front end and backend can interact with. the interface needs to take the Data given(HMAC Signature, and URL Data) for select API requests to [login to view URL] and return the values for use in my front end, and storage in my internal Database where needed. Items include but not limited to: Exchange Rates, User Deposits, Create User Wallet ID's. This is to include the Callback page used by the API to complete Transactions/Deposits. We can answer more questions as needed.