const options = {
  method: 'PATCH',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    content: 'Updated message body',
    additional_pages: 'https://example.com/additional-pages.pdf'
  })
};

fetch('https://api.thanks.io/api/v2/message-templates/{messageTemplateId}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

curl --request PATCH \
  --url https://api.thanks.io/api/v2/message-templates/{messageTemplateId} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "content": "Updated message body",
  "additional_pages": "https://example.com/additional-pages.pdf"
}
'

import requests

url = "https://api.thanks.io/api/v2/message-templates/{messageTemplateId}"

payload = {
    "content": "Updated message body",
    "additional_pages": "https://example.com/additional-pages.pdf"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.patch(url, json=payload, headers=headers)

print(response.text)

{
  "id": 1913,
  "user_id": 2,
  "sub_account_id": null,
  "handwriting_style_id": 110,
  "font_size": "auto",
  "font_color": "rgba(31,0,113,0.80)",
  "name": "Birthday Card",
  "content": "Hey %FIRST_NAME%!, \n\nTHANK YOU for allowing us the opportunity to HELP you with your plan!  \n\nHappy Birthday!",
  "additional_pages": null,
  "skip_creative_generation": 0,
  "custom_background_url": null,
  "qrcode_url": "",
  "cc_emails": [],
  "created_at": "2026-08-05T02:41:28.000000Z",
  "updated_at": "2026-08-05T02:41:32.000000Z",
  "type": "giftcard",
  "giftcard_brand_code": "starbucksus",
  "giftcard_brand_image": "https://cdn.thanks.io/giftcards/starbucks.png",
  "giftcard_amount": "2000",
  "youtube_id": "",
  "landing_page_url": "",
  "share_uuid": "PKE4-QGHH-CHZ9-QV6G",
  "brand_data": {
    "brand_code": "starbucksus",
    "title": "Starbucks",
    "image": "https://cdn.thanks.io/giftcards/starbucks.png",
    "available_amounts": [
      500,
      1000,
      1500,
      2000,
      2500,
      5000,
      10000
    ]
  },
  "handwriting_realism": false
}

{
  "message": "Unauthorized"
}

{
  "message": "Not Found"
}