curl --request POST \
  --url https://cloud.onyx.app/api/admin/tool/custom/validate \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "definition": {}
}
'

{
  "methods": [
    {
      "name": "<string>",
      "summary": "<string>",
      "path": "<string>",
      "method": "<string>",
      "spec": {}
    }
  ]
}