import requests

url = "https://app.langwatch.ai/api/prompts/{id}/tags/{tag}"

payload = { "versionId": "<string>" }
headers = {
    "X-Auth-Token": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

{
  "configId": "<string>",
  "versionId": "<string>",
  "tag": "<string>",
  "updatedAt": "<string>"
}