curl --request GET \
  --url https://app.kapso.ai/api/v1/functions/{function_id}/secrets \
  --header 'X-API-Key: <api-key>'

{
  "data": {
    "secrets": [
      {
        "name": "API_KEY",
        "type": "secret_text"
      },
      {
        "name": "DATABASE_URL",
        "type": "secret_text"
      }
    ]
  }
}