curl --request PATCH \
  --url https://{your-subdomain}.neetokb.com/api/external/v2/articles/bulk_update \
  --header 'Content-Type: application/json' \
  --header 'X-Api-Key: <x-api-key>' \
  --data '
{
  "article_ids": [
    "getting-started",
    "a-84af178b"
  ],
  "category_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
}
'

const options = {
  method: 'PATCH',
  headers: {'X-Api-Key': '<x-api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    article_ids: ['getting-started', 'a-84af178b'],
    category_id: '3c90c3cc-0d44-4b50-8888-8dd25736052a'
  })
};

fetch('https://{your-subdomain}.neetokb.com/api/external/v2/articles/bulk_update', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://{your-subdomain}.neetokb.com/api/external/v2/articles/bulk_update"

payload = {
    "article_ids": ["getting-started", "a-84af178b"],
    "category_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
}
headers = {
    "X-Api-Key": "<x-api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

{
  "updated_articles": [
    {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "slug": "getting-started"
    }
  ]
}

{
  "error": "Not found."
}

{
  "error": "Pass only one of category_id, state or status."
}