curl -X POST "https://server.smartlead.ai/api/v1/campaigns/123/prompt-template?api_key=YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "prompt_content": "Categorise the reply into one of the following categories...",
    "categories": [1, 2, 3, 6]
  }'

import requests

response = requests.post(
    "https://server.smartlead.ai/api/v1/campaigns/123/prompt-template",
    params={"api_key": "YOUR_API_KEY"},
    json={
        "prompt_content": "Categorise the reply into one of the following categories...",
        "categories": [1, 2, 3, 6]
    }
)
print(response.json())

{
  "success": true,
  "data": {
    "template": {
      "id": 789,
      "categories": [1, 2, 3, 6],
      "prompt_content": "Categorise the reply into one of the following categories...",
      "is_active": true
    }
  }
}

{
  "error": "Campaign not found - Invalid campaign_id."
}