The eligibility criteria for appearing in the UPSC Civil Services Examination include being a citizen of India, having a bachelor’s degree from a recognized university, and meeting age limits. Age limits generally vary according to categories, with specific relaxations for Scheduled Castes, Scheduled Tribes, and Other Backward Classes. Candidates must also comply with the number of attempts permitted, which varies by category. These criteria ensure that a diverse range of candidates can compete for civil services, maintaining a broad talent pool in public administration and governance.