Businesses need to efficiently prioritize incoming leads to maximize sales efforts. Manually reviewing every lead consumes valuable time and resources. This article proposes an AI-powered API using Next.js 15 and Gemini 3.5 Flash to automate lead qualification. The API analyzes company information and prospect messages to assign a priority score. A simple API route is outlined, taking company and message data as input. It constructs a prompt to send to the Gemini API for analysis. The AI response includes a score, priority level, and a reason for the classification. This automated scoring allows CRMs and other systems to instantly identify high-priority leads. Implementing this AI layer reduces manual review, speeds up responses to valuable prospects, and improves overall sales efficiency. Production deployment requires validating requests, securing API keys, and implementing rate limiting. AI should augment sales teams by handling repetitive tasks, allowing them to focus on crucial customer interactions. Building such a lightweight lead qualification API offers a scalable and quick way to enhance business processes. The author shares practical AI implementation ideas for automation and custom workflows.