curl --request POST \
  --url https://app.getpaperjet.com/api/v1/admin/models/validate-connection \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '{
  "provider": "google",
  "providerApiKey": "<string>",
  "modelName": "<string>",
  "displayName": "<string>",
  "baseUrl": "<string>",
  "isCore": true,
  "isVision": true
}'

{
  "isValid": true,
  "error": "<string>"
}