In spite of a range of challenges, the urban agriculture sector is rapidly gaining acceptance as one of the viable means of fighting food insecurity and poverty in developing countries. This report uses a case study in Kenya to explore operational interfaces between livelihoods of urban agriculture horticultural food producers and the sellers who buy and sell their produce in an urban context. In the lens of livelihood and vulnerability frameworks and social theories, this report provides means of examining the impact of urban agriculture on people's socio-economic characteristics on one hand and the food security of their households on the other.