About
Built for the moment you need to see what actually happened.
Redline started from a familiar annoyance: needing to fire off one API request or peek at one webhook payload, and not wanting to open a heavyweight app, sign in, and create a workspace just to do it.
Two tools, one job: show you the truth
The API Testersends your request from Redline's server so CORS never gets in the way, then hands back the real status code, headers, timing, and body — no guessing, no client-side workarounds. The Webhook Debugger gives you a disposable inbox URL and captures everything sent to it in real time, exactly as it arrived. Neither one asks who you are first.
No setup tax
No account, no workspace to configure, no team to invite. Open a tab and send a request.
Show the real bytes
Status, headers, timing, body — exactly what came back, not a summarized version of it.
Honest about data
What's stored, where, and for how long is documented, not buried — see the Privacy Policy.