Micro, small, and medium enterprises (MSMEs) in Korong Sungai Dandang had never used brochures or digital applications for promotional purposes, so product information reached only customers already familiar with the business reflecting a persistent gap in digital promotional literacy among rural MSME actors. This community service program was designed to enhance the understanding and skills of three MSME partners in utilizing generative artificial intelligence to produce online promotional brochures. A participatory training and mentoring approach, analyzed through descriptive qualitative methods, was applied to three partners a vegetable vendor, a school stationery and accessories seller, and a grocery store owner on 23 June 2026 in Korong Sungai Dandang, Nagari III Koto Aur Malintang Selatan, IV Koto Aur Malintang District, Padang Pariaman Regency. Data were gathered through observation, semi-structured interviews, and documentation, and subsequently evaluated against knowledge, skill, and attitudinal indicators. The results indicate full (100%) partner participation and the successful production of three AI-generated promotional brochures tailored to each business, accompanied by measurable gains in partners' understanding of AI, prompt-writing proficiency, and willingness to independently maintain and update their brochures. This activity offers a novel contribution by integrating generative AI with hands-on brochure-development mentoring for previously undigitalized rural MSMEs, thereby strengthening digital literacy, promoting the adoption of appropriate technology, and advancing grassroots economic empowerment. The findings demonstrate that a participatory, practice-based mentoring approach effectively bridges the gap between technology access and its practical application among rural MSME actors.