This suggests your question is 'Are the Federal, State or City laws that require a home buyer sign an agency agreement before showing a home to a client?" The answer to this question is no.
HOWEVER, a brokerage may require (individual broker law) their agent to secure a agency agreement before taking any buyer to see a house. This not only demonstrates the buyer has some degree of seriousness AND provides some safety options should the agent never be seen again. This is important.
Finally, a home seller may dicate that only buyers who have the ability to buy as proven by a prequalification or proof of funds document be allowed in the home. The seller at there sold descretion may also have safety concerns and mandate that only buyers who have entered into an agency agreement be allowed into the home.
It is predictable, that you will not sign such a agreement, and at some time in the future say your agent did not show you all the homes for sale. That you found most of the homes you looked at yourself. Often, a buyer is not aware of the restriction and limits they impose on themselves by the decision they make.
We work with the resources buyers and seller permit and make the best of the situation.
Lv4, if you are an agent and have this question, you may consider having an experienced agent help you through the first several sales. You don't want your lack of experience hurt a customer do we!
And Alma is correct, after 2005, I think it was, you are assumed to be transaction broker. You will find this at 475.278 (1b) .
Some Real Estate Brokers will require that their agent have the buyer sign even a Transaction Broker form. This form by itself doesn't obligate you to exclusively work with that agent--unless they have added wording to "lock you into" that Realtor.
Hope this helps.
You are very fortunate to be able to buy in this low priced market!
All the best,