curl --request GET \
  --url https://app.teable.ai/api/base/%7BbaseId%7D/connection \
  --header 'Authorization: Bearer REPLACE_BEARER_TOKEN'

{
  "dsn": {
    "driver": "<string>",
    "host": "<string>",
    "port": 123,
    "db": "<string>",
    "user": "<string>",
    "pass": "<string>",
    "params": {}
  },
  "connection": {
    "max": 123,
    "current": 123
  },
  "url": "<string>"
}