API Lens – Smart HTTP Inspector

Real-time HTTP monitoring with analytics, performance scoring, replay functionality, and API insights for developers.

API Lens – Smart HTTP Inspector gives developers a clear, real-time view of every HTTP request a webpage makes. Whether you're debugging APIs, analyzing network performance, or optimizing microservice interactions, API Lens provides deep insights through an intuitive and modern interface. The extension captures requests as they happen and organizes them into a clean dashboard, with detailed information available in a single click. API Lens reveals request methods, status codes, timing breakdowns, payloads, headers, retries, and more—making it easy to diagnose issues quickly. 🔍 Core Capabilities Real-time HTTP and HTTPS request monitoring Status code filtering (2xx, 3xx, 4xx, 5xx) Slow API detection and latency analysis Retry detection for unstable endpoints Complete request details: headers, payload, query parameters, and response information Endpoint frequency heatmap for visual performance insights Replay requests to test or debug without switching tools Export captured data as JSON Clean dark and glass-mode UI options Local storage bookmarks to save important API calls 🚀 Why Developers Use API Lens Debug API failures and performance issues faster Understand how a webpage interacts with backend services Analyze slow or repeated requests during development Inspect authentication flows and decode JWT tokens easily Test API behavior using the built-in replay feature Gain clarity on complex microservice interactions API Lens is designed to make network debugging more efficient by presenting information in a simple, readable format without overwhelming the user. Everything runs locally in your browser—no tracking, no external servers, and no data sharing. 🛠️ How It Works Install the extension Click the API Lens icon and attach to the current tab Browse normally—API Lens captures requests automatically Inspect, filter, replay, or export data anytime.