curl --request POST \
  --url https://atollhq.com/api/orgs/{id}/kpis/{kpiId}/http-syncs/{syncId}/validate \
  --header 'Authorization: Bearer <token>'

{
  "ok": true,
  "config_hash": "<string>",
  "required_secrets": [
    {}
  ],
  "canonical_host": "<string>",
  "error": "<string>",
  "code": "<string>"
}