Agreements with cities must be accompanied by an ordinance or resolution authorizing the elected head of the city or a designated representative to sign the agreement.

Agreements with counties must be accompanied by an order of the commissioner's court authorizing the county judge to sign the agreement.

The city or county secretary's certificate must also accompany all agreements to verify that the ordinance or resolution was passed by the city or county. If the secretary has signed and sealed the resolution or ordinance, then a separate secretary's certificate is not required.