curl --request GET \
  --url https://api.helicone.ai/v1/vault/keys \
  --header 'authorization: <api-key>'

{
  "data": [
    {
      "cuid": "<string>",
      "provider_secret_key": "<string>",
      "provider_key_name": "<string>",
      "provider_name": "<string>",
      "provider_key": "<string>",
      "org_id": "<string>",
      "id": "<string>"
    }
  ]
}