curl --request POST \
  --url https://{host}/v2/workspaces/slug:ai-collection-v3/webhooks/v1/collections/{collection_id}/data/aggregate \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "steps": [
    {
      "type": "sum",
      "input_field": "amount",
      "output_field": "total"
    },
    {
      "type": "avg",
      "input_field": "amount",
      "output_field": "avg_amount"
    }
  ]
}
'

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    steps: [
      {type: 'sum', input_field: 'amount', output_field: 'total'},
      {type: 'avg', input_field: 'amount', output_field: 'avg_amount'}
    ]
  })
};

fetch('https://{host}/v2/workspaces/slug:ai-collection-v3/webhooks/v1/collections/{collection_id}/data/aggregate', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://{host}/v2/workspaces/slug:ai-collection-v3/webhooks/v1/collections/{collection_id}/data/aggregate"

payload = { "steps": [
        {
            "type": "sum",
            "input_field": "amount",
            "output_field": "total"
        },
        {
            "type": "avg",
            "input_field": "amount",
            "output_field": "avg_amount"
        }
    ] }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

{
  "results": [
    {}
  ]
}

{
  "error": "InvalidArguments",
  "message": "<string>"
}