API Lens – Smart HTTP Inspector

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.