-echo?

[analytically]

Is it -echo true/false? Or just -echo to enable it?

[thomasf]

It's false by default, -echo or -echo=true enables it.
I guess that you might already have figured this out :)

[analytically]

Yeah thanks! But it'd be nice if it's better documented...

[thomasf]

It is using the standard go flag package so it's behaving like most go command line apps with arguments.

If you want to understand it these are the captainhook flags:
https://github.com/bketelsen/captainhook/blob/master/main.go#L17

And this is how flags work:
http://golang.org/pkg/flag/

[macropin]

I think echo should be on by default. I was surprised when the webhooks returned 200 ok and no result. My expectation was that the payload would include the command output.