curl --location --request POST 'http://dev-cn.your-api-server.com/api/rest/v1/prompt/improve' \
--header 'authorization;' \
--header 'content-type: application/json' \
--data-raw '{
"prompt": "string"
}'
{
"promptGeneration": {
"prompt": "The improved prompt.",
"apiCreditCost": 4
}
}