I’m not too sure how to set this. I’m trying to run the API via a PHP curl request (as per the example), but I get an error:
Query returned error code: Error: IP is not allowed to connect with API
Where do I set the IP? I read up you can do:
v-change-sys-config-value API_ALLOWED_IP 170.187.188.92
But it doesn’t work still 
Should be the public ip of the computer calling the api
If you have things as the template to remove the pro number try 127.0.0.1
Thanks. Yes, looking at the log file gave me the answer 
tail -n20 -f /var/log/hestia/*.log
2023/06/15 11:37:01 [error] 3320#0: *113 FastCGI sent in stderr: "PHP message: PHP Warning: Undefined variable $hst_return in /usr/local/hestia/web/api/index.php on line 43" while reading response header from upstream, client: 127.0.0.1, server: _, request: "POST /api/ HTTP/1.1", upstream: "fastcgi://unix:/run/hestia-php.sock:", host: "wbs.xxx/.nl:9183"
So I added that in, and now it works Seeing as the servers IPv4 is already added, would it not make sense to also add 127.0.0.1 to the whitelist as well? (or maybe show the requesting IP address in the error message, so you know which one is trying to connect)
For anyone else trying to find the option - its in Settings > Configure > Security > System > Allowed IP addresses for API