Event Police

Probe GTM, GA4 & MoEngage on any page. Click CTAs to capture dynamic events, inspect payloads, and validate tags with CSV tests.

Stop guessing whether your analytics tags fired. Event Police is a developer tool for analytics engineers, QA, and product teams who need to verify Google Tag Manager, GA4, and MoEngage events — on real pages, in real time, without digging through DevTools. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ WHAT IT DOES ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Turn on the inspector and every click becomes an analytics audit. • Probe mode (on by default) — click any button, link, or form to capture events that fire on interaction — including dynamic JavaScript tags with no HTML attributes • Real-time interception of GTM dataLayer, GA4 gtag, and MoEngage SDK calls • On-page probe banner — see event names, sources, and params instantly on the element you clicked • Hover preview — predicted GTM tags before you click (when static tags exist) • DevTools panel — full event stream with search, filters, pause, clear, and JSON export • Page dock — open the inspector at the bottom of the page without leaving your workflow • CSV Test Suite — upload expected events and params, walk the user flow, get live pass/fail results with an on-page progress chip ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ WHO IT'S FOR ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ✓ Analytics engineers validating GTM containers and dataLayer pushes ✓ QA teams regression-testing booking flows, checkout, and sign-up funnels ✓ Product managers spot-checking MoEngage and GA4 events before release ✓ Agencies auditing client implementations across GA4 + GTM + MoEngage stacks ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ HOW TO USE ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 1. Click the Event Police icon → Turn on Inspector 2. Click any CTA on the page — probe captures fired events 3. Click an event in the probe list to open the full inspector 4. Optional: open Chrome DevTools → Event Police tab for the complete stream 5. Optional: upload a CSV in the Test Suite tab to validate events against expectations ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ SUPPORTED SOURCES ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ • Google Tag Manager — dataLayer.push() • Google Analytics 4 — gtag('event', …) • MoEngage — track_event, trackEvent, and related SDK methods ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ PRIVACY ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Event Police runs locally in your browser. It intercepts analytics calls on pages you visit to display them to you. It does not send your browsing data to external servers. Built for developers debugging their own sites and staging environments. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Questions or feedback? Leave a review or reach out via the support link.