API Pulse Pro: Network Inspector Studio

Real-time API & POST inspector, in-browser request replayer, response mocking studio, cURL export & TypeScript generator.

Stop digging through cluttered DevTools tabs filled with hundreds of static images, font files, and script bundles. API Pulse Pro is an IDE-grade network traffic inspector, in-browser request replayer, response mocking engine, and TypeScript type generator designed by engineers for engineers. It gives you immediate clarity and complete interactive control over every single HTTP request occurring on any web page. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🔥 KEY CAPABILITIES ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 1. REAL-TIME API & POST MONITORING • Automatically tracks all fetch() and XMLHttpRequest calls in the page context. • Dedicated focus on POST, PUT, PATCH, DELETE, GET, and GraphQL mutations. • Color-coded method badges, HTTP status codes, latency waterfall (ms), payload sizes, and exact timestamps. • Syntax-highlighted JSON viewer for both Request Payloads and Response Bodies. 2. IN-PAGE FLOATING HUD (HEADS-UP DISPLAY) • Sleek glassmorphic floating capsule docked directly inside the web page. • Live real-time traffic counters: e.g. "14 APIs | 6 POST | 0 ERR". • Animated pulse ping on every new request. • Expandable into an instant In-Page Quick Drawer without opening DevTools! • Fully draggable anywhere on screen; toggle anytime with Alt+Shift+P. 3. IN-BROWSER REQUEST REPLAYER • Ever wanted to tweak a POST body or headers and re-send it with active session cookies and CORS credentials? • Pre-populate any captured request with one click. • Replay directly inside the page's execution context or via direct studio fetch. • View execution results side-by-side with original responses. 4. IN-BROWSER MOCK ENGINE (RESPONSE STUBBING) • Intercept matching API endpoints in the browser and return synthetic responses without touching the server! • Match endpoints with wildcards (/api/v1/orders*) or regular expressions. • Configure custom HTTP status codes (200, 400, 404, 500), simulated latency sliders (0ms to 3000ms), and custom JSON bodies. • Test frontend loading spinners, empty states, and error toasts with ease! 5. AUTO-GENERATED TYPESCRIPT INTERFACES • 1-click generation of production-ready TypeScript types from request payloads and response bodies. • Accurately types nested objects, arrays, and primitive values. 6. MULTI-LANGUAGE CODE GENERATORS • Instantly copy any captured request as: - cURL (bash) - JavaScript fetch() - Axios (JS/TS) - Python requests - Go net/http 7. SECURITY & SECRETS SCANNER + JWT DECODER • Highlights exposed Authorization headers, Bearer tokens, and API keys. • Built-in JWT Decoder displays decoded Header, Payload claims, and expiration timers. 8. SIDE-BY-SIDE JSON DIFF TOOL • Compare two captured responses or before/after mutations with visual diffing. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🔒 100% PRIVACY & CLIENT-SIDE SECURITY ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ • Zero telemetry. Zero analytics. Zero cloud servers. • All data remains 100% local inside your browser memory. • Manifest V3 compliant.