API Sniffer Pro – Monitor, Inspect & Document APIs

API Sniffer Pro

Capture, search, export, and replay API calls (fetch & XHR). Live view, filters, curl export, sessions, dark mode. API Sniffer Pro is a lightweight, powerful tool for monitoring and analyzing API traffic in real time — without needing DevTools open. Easily capture, search, filter, export, and replay HTTP requests (Fetch & XHR) across any website you visit. Live Capture – Instantly view all outgoing API requests and responses. Powerful Filters – Search or filter by method, domain, status, or keyword. Replay & Edit – Resend captured requests with modified parameters or headers. Export Options – Save requests as cURL commands, JSON, or plain text for sharing or debugging. Dark Mode – Eye-friendly interface for night-time use. Install the extension. Open the popup and ensure capture is ON. Browse any site — requests will appear live in the capture view. Click a request to inspect details, edit, or resend it. Export or save sessions as needed. API Sniffer Pro runs entirely in your browser and does not collect or send your data anywhere.

ReloadScope - API Monitor & Network Tracker

Track, analyze & debug REST/JSON API requests. HTTP Network Inspector with session management, HAR export & request replay. ReloadScope is the ultimate Chrome extension for developers who need to track, analyze, and debug REST/JSON API requests with professional-grade tools. 🎯 Why ReloadScope? Tired of digging through Chrome DevTools Network tab to find API calls? Need to compare API responses or replay requests with modifications? ReloadScope organizes your API traffic into clean, manageable sessions and provides powerful debugging tools right at your fingertips. 📊 Smart Session Management - Automatically organizes API requests by domain and page reload - Filter by HTTP method (GET, POST, PUT, DELETE) instantly - Powerful search to find requests across all sessions - Clean, intuitive sidebar navigation 🔍 Advanced Request Analysis - Multiple JSON viewers (Code & Tree view) - Syntax highlighting for better readability - Header and body inspection - Automatic JSON schema generation - Request timing and performance metrics 🛠️ Professional Developer Tools - Request Replay: Resend any request with custom modifications - Response Diff: Compare two API responses side-by-side with visual highlighting - HAR Export/Import: Full HAR 1.2 support for integration with other tools - Copy as cURL: Generate ready-to-use cURL commands - PDF Export: Document requests for reports and sharing - JSON Download: Save response data for offline analysis 🎨 Premium User Experience - Modern, dark-themed interface designed for developers - Resizable panels for customized workspace - Collapsible tree structures with keyboard shortcuts - Search with match highlighting and navigation - Responsive design that works on any screen size 💡 Perfect For ✅ Frontend Developers - Debug API integrations and monitor network traffic ✅ Backend Developers - Verify API responses and test endpoints ✅ QA Engineers - Document API behavior and reproduce issues ✅ API Designers - Analyze request/response patterns ✅ DevOps Teams - Export HAR files for performance analysis 🚀 How to Use - Click the ReloadScope icon in your toolbar - Toggle tracking ON for any website - Reload the page to start capturing requests - Open the Dashboard to analyze your API traffic - Use filters, search, and comparison tools to debug efficiently 🔒 Privacy & Security ReloadScope respects your privacy: - All data is stored locally in your browser - No data is sent to external servers - No analytics or tracking - Open-source and transparent - Full control over your debugging data 🎓 Great for Learning Perfect for developers learning: - RESTful API design patterns - HTTP request/response structure - JSON data formats - API authentication flows - Network performance optimization 💪 Built by Developers, for Developers ReloadScope was created by developers who were frustrated with the limitations of existing tools. We built the extension we wished existed - and now it's yours to use! 📈 Regular Updates We're committed to making ReloadScope the best API monitoring tool available. Expect regular updates with new features, improvements, and bug fixes based on community feedback. 🌟 Core Features in Detail Session-Based Organization Every page reload creates a new session, making it easy to track API behavior across different user interactions. Sessions are automatically grouped by domain for quick navigation. Advanced Filtering Toggle HTTP methods on/off to focus on specific request types. The search bar instantly filters across all sessions, helping you find that one request among hundreds. Beautiful JSON Viewer Switch between code view with syntax highlighting or tree view with collapsible nodes. Search within JSON responses with match highlighting and previous/next navigation. Request Comparison Select any two requests and compare their responses side-by-side. Visual diff highlighting shows exactly what changed between responses. Request Replay Click any request to open the replay editor. Modify the URL, headers, or body, then send it again. Perfect for testing API endpoints with different parameters. HAR Integration Export sessions to HAR 1.2 format for analysis in other tools. Import HAR files from tools like Chrome DevTools or Postman for analysis in ReloadScope's superior interface. Copy as cURL Instantly generate cURL commands from any request. Perfect for sharing with team members or running from the command line. Export to PDF Generate professional PDF reports of request details. Great for documentation, bug reports, or sharing with non-technical stakeholders. 🎯 Use Cases API Development Monitor API calls while developing frontend applications. Verify that requests are sent with correct parameters and responses match expectations. Debugging Reproduce bugs by comparing API responses between working and broken states. Use the diff tool to identify exactly what changed. Testing Replay requests with modified parameters to test API behavior. Export to HAR for integration with automated testing tools. Documentation Generate PDF exports of API requests for documentation purposes. Automatic schema generation helps document API response structures. Performance Analysis Track request timing and identify slow API calls. Export to HAR for detailed performance analysis. ⚙️ Technical Details Built With Modern Standards - Manifest V3 (latest Chrome extension standard) - Vanilla JavaScript (no framework dependencies) - Chrome Debugger API for network interception - Local storage only - no external servers Keyboard Shortcuts - Ctrl+Shift+C: Collapse all JSON nodes - Ctrl+Shift+E: Expand all JSON nodes - Search navigation with arrow keys - Smart Features 🎨 Interface Highlights Resizable Panels Drag the gutter to adjust sidebar and detail panel sizes to your preference. Collapsible Sections Domains and sessions can be expanded or collapsed. State is preserved even when filtering. Status Indicators Color-coded HTTP method badges (GET, POST, PUT, DELETE) for quick identification. Clear Visual Hierarchy Sessions grouped by domain with request counts. Easy to see which domains are making the most API calls. 🔧 Permissions Explained - debugger: Required to intercept network requests in real-time - storage: Saves your preferences locally - tabs: Tracks which tab made which request - webNavigation: Detects page reloads to create new sessions - host_permissions: Monitors requests on websites you choose to track 📊 What Makes ReloadScope Different? Unlike Chrome DevTools: ✅ Session-based organization (requests grouped by reload) ✅ Request replay with modifications ✅ Side-by-side response comparison ✅ Better JSON viewer with search ✅ HAR import/export ✅ PDF export for documentation ✅ Persistent storage across browser restarts Unlike Postman: ✅ Automatic request capture (no manual setup) ✅ Organized by actual page reloads ✅ See requests in real-time as they happen ✅ Chrome-native integration ✅ Zero configuration required 🚀 Get Started in Seconds 1. Install ReloadScope 2. Click the icon and toggle ON 3. Reload your page 4. View all API requests organized and ready to analyze 💬 Support & Feedback We love hearing from our users! If you have questions, suggestions, or need help, please reach out through the support link. Your feedback helps us make ReloadScope better for everyone. Download ReloadScope today and experience the most powerful API monitoring tool for Chrome!

API Sniffer - Endpoint Detector

Capture, replay, and automate HTTP requests with real-time WebSocket, WebRTC monitoring and passive API leak detection. API Sniffer is a powerful, lightweight developer tool designed to simplify API debugging, monitoring, and documentation. Whether you are reverse-engineering an app, writing documentation, or debugging network calls, API Sniffer completely eliminates the need to manually dig through the browser's Network tab. 🔌 WebSocket Monitoring: • Real-time capture of all WebSocket connections and messages (sent & received). • Split-panel UI with connection sidebar and live message stream. • Pause/Resume listening to freeze capture without losing data. • Export captured WebSocket data as JSON or CSV with one click. 📡 WebRTC Monitoring: • Intercepts all RTCPeerConnection creation, ICE candidates, SDP offers/answers, data channels, and media tracks. • Full event stream with color-coded badges for each event type. • Export all WebRTC data as structured JSON. • Shared Pause/Resume control with WebSocket monitoring. 🔐 Passive API Leak Detection (Secrets Scanner): • Automatically scans all request URLs, request headers, response headers, and response bodies for leaked secrets. • Detects 38+ secret types: AWS keys, Google API keys, Stripe keys, JWTs, Bearer tokens, GitHub/GitLab tokens, Slack/Discord/Telegram tokens, OpenAI keys, SendGrid keys, Firebase keys, Shopify tokens, private keys, and more. • URL parameter scanning catches API keys leaked in query strings (?key=, ?api_key=, ?access_token=, ?token=, ?secret=). • Context-Aware Filtering: Smart false-positive reduction that examines JSON key names — drops normal IDs (request_id, client_id, etc.) and only reports values assigned to security-sensitive keys (password, secret, token, auth, etc.). • Click any detected leak to view full details with matched value and surrounding context. • Export all findings as CSV for reporting. • Advanced Dashboard: A full-page professional dashboard for in-depth API testing. • API Repeater: Send, modify, and replay captured HTTP requests manually. View raw requests and preview responses instantly with multi-tab support. • API Automator (Fuzzer): Automate API testing by injecting payloads into requests using the §target§ marker. Supports manual lists, .txt file uploads, numeric ranges, and incremental payloads. • Target Scope Management: Define specific domains in your scope and easily filter the popup to "Show Scope Only," keeping your workspace clutter-free. • 1-Click Integration: Instantly send any captured endpoint from the popup directly to the Repeater (RPT) or Automator (AUT) queues. • CSV Export for Automator: Export all your automated run results (including status codes, lengths, and response times) directly to a CSV file. 🚀 Real-time Monitoring — Automatically captures fetch/XHR requests, WebSocket messages, and WebRTC connections silently as you browse. 🧹 Smart Filtering — Built-in filters ignore static assets (.png, .css, .mp4, etc.), while the Custom Blacklist lets you hide specific noisy domains. Target Scope lets you strictly focus on testing domains. 🔐 Leak Detection — Passively scans all network traffic for accidentally exposed API keys, tokens, passwords, and secrets with context-aware false-positive filtering. 📂 One-Click Export — Instantly copy all endpoints to your clipboard, or download them as a clean .txt, structured .json for Postman/Insomnia, or CSV for spreadsheets. 🎯 Precision Control — Easily start, stop, pause, or reset the recording process at any time. Remove single endpoints from the list without clearing everything. 🔌 Protocol Coverage — Monitors HTTP (XHR/Fetch), WebSocket, and WebRTC traffic from a single extension. ⚡ Lightweight & Secure — Runs 100% locally in your browser. No external servers, no tracking, and it won't slow down your browsing speed. Perfect for Web Developers, Pentesters, Bug Bounty Hunters, and QA Engineers who need to analyze network traffic quickly and efficiently.

API Monitor

🚀 API Monitor v1.2.2 – Advanced On-Page API Inspector & Console Monitor No need to open Chrome DevTools. API Monitor captures XHR and Fetch requests through a floating on-page panel — inspect details, replay requests, monitor console logs, and manage storage without leaving the page. ✅ Request Replay — edit and resend any captured request; diff view compares replayed vs original; localhost mode with remembered port ✅ Improved JSON Viewer — auto-expands nested structures; smoother interactions ✅ API Detail Tab Mode — tabbed layout (Response / Request / General / Headers) with drag-to-reorder in settings ✅ Redesigned Storage Panel — hover-reveal Edit/Delete, inline editing, add new entries; supports LocalStorage, SessionStorage, and Cookies v1.2.0 — HAR file export (Postman-compatible), dedicated "Copy cURL" button per record v1.1.2 — Real-time console log monitoring with level filtering, keyword search, and stack trace 🔍 Network — captures XHR & Fetch; filter by URL, method, status, latency, time range; domain allow/block list 🧐 Inspect — headers, body (JSON/text/FormData), response time; one-click cURL copy and HAR export 📊 Console — real-time log capture with level filter (log/warn/error/info/debug) and keyword search 💾 Application — inspect and manage LocalStorage, SessionStorage, and Cookies 🔐 Permissions — browser permission status at a glance (camera, mic, geolocation, etc.) 🔒 Privacy — all data stays local; nothing sent to external servers