Traffic Inspector - ngrok documentation

Overview

One of the main advantages of using ngrok is the ability to view the traffic going to your origin service. This can help in triaging tough bugs or testing new capabilities. ngrok offers multiple ways to inspect the traffic going to your service.


ngrok Agent Local Traffic Inspector	This is available when working with the standalone agent and is usually found at http://localhost:4040. Look for a link in your ngrok agent console.
ngrok Traffic Inspector	A cloud-based version of the local Traffic Inspector that is available in your ngrok dashboard. See below for more details.

ngrok Traffic Inspector

The ngrok Traffic Inspector replaces the local agent inspection interface and adds additional capabilities such as longer retention and searching. It has two tabs:

HTTP: HTTP requests to your endpoints, with full capture mode and replay.
TCP: TCP connections to every endpoint type, including TLS handshake details and ngrok errors.

Free accounts get 24 hours of traffic retention. Hobbyist and Pay-as-you-go get 72 hours. After the retention period, ngrok purges traffic events from the system. Pay-as-you-go customers can purchase an add-on for longer retention (up to 90 days).