Is it okay to be introduced by an agency to work as a clerk in a hospital?

Bad.

Hospital clerks are generally required to have knowledge of medicine, nursing, and drugs, and have certain professional qualifications. Intermediaries generally can only provide job search opportunities and cannot guarantee that job seekers will be hired.

Medical institutions whose main purpose is to provide people with medical care services and life services. Its service targets include not only patients and injured people, but also healthy people in specific physiological states (such as pregnant women, parturients, newborns) and completely healthy people.