Hello! Today I'd like to introduce what I've used to understand how Mackerel communications work with the Mackerel API. It's actually really simple, thanks to the flexibility of mackerel-agent's configuration. First, I set up Fiddler Web Debugger, a very useful (and free!) tool that I have used for many projects in the past. It serves as a proxy server that you can manipulate and debug traffic wit
![Setup: Debugging Mackerel with Fiddler - sudofox's journal](https://cdn-ak-scissors.b.st-hatena.com/image/square/911f869744e550de5a0dd7b0e10fc473f1a90907/height=288;version=1;width=512/https%3A%2F%2Fcdn-ak.f.st-hatena.com%2Fimages%2Ffotolife%2Fa%2Faustinburk%2F20180908%2F20180908002621.png)