Dev Tool clearly showing json response but not on browser / postman / python request etc

Question

please mark this question as dumb if you should, because i really feel dumb . i check this link https://www.instaforex.com/specifications/currencies?account=standard&instrument=currencies&page=1, on Dev Tool it clearly show giving json response. But why it showing HTML response on browser / postman / python request etc? what prevent this from giving json response? is it cloudflare? / angular? / jquery? / cors? please give me an enlightenment. thank you very much

Answer 1

now i know about sec-fetch-site https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Sec-Fetch-Site