Got confirmation that the right endpoint is {hostname}/hello without the tyk prefix. There was a documentation change a while back that messed with the right value.
Please use the endpoint below to check the health of an API health
curl --location --request GET ‘http://localhost:8080/tyk/health?api_id=012345689’ --header ‘x-tyk-authorization: {secret}’
Just out of curiosity, any reason why you would prefer the Gateway API (prefixed with tyk) to work?