The generic heading for this type of clause is "disclaimer of agency", or sometimes "independent contractors," meaning that the parties are in no way agents of each other. Here are examples of typical "disclaimer of agency" clauses:

"INDEPENDENT CONTRACTORS. The parties hereto expressly agree that the relationship between them hereunder is that of two principals dealing with each other as independent contractors subject to the terms and conditions of this Agreement. At no time, either past, present or future, shall the relationship of the parties herein be deemed or intended to constitute an agency, partnership, joint venture or a collaboration for the purpose of sharing any profits or ownership in common. Neither party shall have the right, power or authority at any time to act on behalf of, or represent, the other party, and each party hereto shall be separately and entirely liable for its own debts in all respects."


"Disclaimer of Agency. This Agreement shall not constitute any party the legal representative or agent of another, nor shall any party have the right or authority to assume, create, or incur any third party liability or obligation of any kind, express or implied, against or in the name of or on behalf of another, except as expressly set forth in this Agreement."