Author here, thanks for posting this, I didn't expect to see traffic coming from HN.

I wrote the original "curlese" post (in Italian) back in 2021: the idea that when an HTTP integration breaks, a `curl -v` command is the only language every team should speak. Curl is the ideal tool since you don't have to share logs and neither prove your application behaviour. The thesis stood the test of time :-)

Curlese, five years later: curl is still the universal language of broken integrations