Okla. Stat. tit. 12, § 12-158.2: Request of server - Fees

The process served by a licensee, authorized herein, shall be

upon a request by the party or person desiring to obtain the

services of said licensee. The fees to be paid for the services

shall be agreed upon by them, and such fees shall not be collected

by, nor handled through, the court clerk's office.