This study explores the modification of titanium implant surfaces using ZIF-8 and epigallocatechin gallate (EGCG). The modified material was comprehensively characterized using SEM/EDS analysis and FT-IR mapping. The bioactivity of the synthesized layer was assessed through hydroxyapatite (HAp) growth tests and protein adsorption assays. The results demonstrated that the synthesized layer was evenly distributed across the titanium surface, exhibited consistent protein adsorption, and promoted HAp growth, thereby confirming its bioactive properties. These enhancements were significantly superior to those of unmodified titanium. The antimicrobial properties of the material were also investigated, showing significant inhibition of microbial growth, particularly against Pseudomonas aeruginosa, Escherichia coli, Staphylococcus aureus, Bacillus cereus, and Candida albicans. Notably, substantial antimicrobial activity was observed only in the systems incorporating EGCG. Specifically, titanium modified using ZIF-8 and EGCG inhibited microbial growth by 41–65 %, with C. albicans being the most susceptible, followed by E. coli and the Gram-positive species S. aureus and B. cereus. Among the tested microorganisms, P. aeruginosa demonstrated the highest resistance. The study conclusively attributes the observed antimicrobial properties to the presence of EGCG. The described modification holds significant potential for enhancing implant properties and protecting surfaces against biofilm formation.