curl --request GET \
  --url https://api.sendrealm.com/templates/{id}/preview \
  --header 'Authorization: Bearer <token>' \
  --header 'X-Sendrealm-Project-Id: <x-sendrealm-project-id>'

const options = {
  method: 'GET',
  headers: {
    'X-Sendrealm-Project-Id': '<x-sendrealm-project-id>',
    Authorization: 'Bearer <token>'
  }
};

fetch('https://api.sendrealm.com/templates/{id}/preview', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.sendrealm.com/templates/{id}/preview"

headers = {
    "X-Sendrealm-Project-Id": "<x-sendrealm-project-id>",
    "Authorization": "Bearer <token>"
}

response = requests.get(url, headers=headers)

print(response.text)

{
  "status": 123,
  "data": {
    "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "channel": "email",
    "version_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "subject": "<string>",
    "rendered_html": "<string>",
    "rendered_text": "<string>",
    "messages": [
      {
        "locale": "<string>",
        "title": "<string>",
        "message": "<string>",
        "image_url": "<string>",
        "launch_url": "<string>"
      }
    ],
    "readiness": {
      "ready": true,
      "reasons": [
        "<string>"
      ]
    }
  }
}