const options = {method: 'GET', headers: {'x-spree-api-key': '<api-key>'}};

fetch('http://{defaultHost}/api/v3/store/company_invitations/{token}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

curl --request GET \
  --url http://{defaultHost}/api/v3/store/company_invitations/{token} \
  --header 'x-spree-api-key: <api-key>'

{
  "id": "cinv_UkLWZg9DAJ",
  "email": "new@acme.test",
  "expires_at": "2026-02-14T12:00:00.000Z",
  "company_id": "comp_UkLWZg9DAJ",
  "status": "pending",
  "company_name": "Acme Industrial",
  "store_name": "Spree Test Store"
}

{
  "error": {
    "code": "record_not_found",
    "message": "Company invitation not found"
  }
}