> ## Documentation Index > Fetch the complete documentation index at: https://docs.knock2.ai/llms.txt > Use this file to discover all available pages before exploring further. # Knock2: Identify Website Visitors & Score Leads > Knock2 reveals the companies and people visiting your website, scores them against your ICP, and delivers real-time alerts so your team can act fast. Knock2 is a visitor identification platform that turns anonymous website traffic into actionable sales intelligence. Embed a lightweight tracking script, and Knock2 immediately starts identifying the companies and individual contacts browsing your site — complete with firmographic data, lead scores, and full page-visit history. Embed the tracking script and make your first API call in minutes Get your API key and learn how to authenticate every request Full reference for every endpoint — accounts, contacts, scores, webhooks, and more Receive real-time notifications when visitors are identified or scores change ## How Knock2 works Add a single `