How to Build AI-Powered B2B Lead Scoring Using Google Sheets and Gemini

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A technical guide published on DEV Community outlines a method for automating B2B lead scoring without expensive CRM platforms like Salesforce Pardot or Marketo. The approach uses Google Apps Script to run an hourly background trigger that passes lead data from a Google Sheets pipeline to Google's Gemini AI model. Unlike traditional rule-based systems that rely on rigid keyword matching, Gemini performs semantic profile analysis to evaluate each lead holistically against a company's Ideal Customer Profile. The system returns a structured JSON response containing a numerical score from 0 to 100 and a one-sentence explanation, which are written directly into the spreadsheet. High-scoring leads above 80 points are automatically highlighted in green for quick visual triage by sales teams.

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