To be eligible for the UPSC civil services exam, candidates must meet specific criteria. They should hold a bachelor's degree from a recognized university, irrespective of their field of study. Age limits are also in place: general category candidates must be between 21 and 32 years old, with relaxations for reserved categories. Furthermore, candidates must be Indian citizens or meet specific eligibility conditions for non-citizens. Lastly, candidates must clear the required number of attempts as stipulated by the UPSC, which varies according to categories. This framework ensures that aspirants possess foundational educational qualifications.