One toolkit for everything that talks to your backend in real-time.
Capture webhooks. Test WebSockets. Watch every request and frame stream in live — no polling, no refresh, no tab-juggling.
Two tools, one workflow.
Stop juggling tabs of webhook.site, wscat and Postman. PulseLab does both — in real time, on one clean surface.
Webhook capture
Get a unique URL, point any service at it, watch requests arrive the instant they hit. Inspect headers, query and body — pretty-printed — then forward to your dev server.
WebSocket tester
Save URLs with subprotocols and headers, connect with one click, send templated messages, and inspect every frame as it streams — in and out, with live timestamps.
Forward to localhost
Mirror captures to any URL — your laptop through a tunnel, a staging box, anywhere. Original method, headers and body, preserved.
Replay & copy as cURL
Re-fire any captured request with one click, or copy it as cURL or JSON to reproduce the exact call in your terminal.
Real-time push
New hits stream to your dashboard the second they land, over a live socket. No polling, no refresh button, no stale tab.
Inspect headers & body
Every request and frame is fully parsed — headers, query, JSON body — pretty-printed and copy-friendly.
Same dashboard, two superpowers.
Sign up
Free account in about 30 seconds — email or Google. No credit card.
Pick a tool
Spin up a webhook endpoint or save a WebSocket connection. Your call.
Debug live
Watch traffic stream in. Forward, replay, save templates, copy as cURL.
Point any service at your capture URL.
Send a request from your terminal, or paste the URL into Stripe, GitHub or anywhere else. Watch it land in real time.
# fire a webhook at your capture URL curl -X POST https://pulselabapi.saassimplified.net/catch/abc123 \ -H "Content-Type: application/json" \ -d '{"event":"order.created","id":42,"amount":1999}' # → captured in your dashboard in real-time
Stop printf-debugging real-time integrations.
Capture, inspect, forward and replay — for both webhooks and WebSockets. The debugger you wish you'd had three years ago.
No credit card required · 10 endpoints + 10 connections free