curl --request POST \
  --url https://{host}/v2/workspaces/slug:ai-collection-v3/webhooks/v1/collections/{collection_id}/data/upsert \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "data": {
    "product_name": "Laptop Pro 16",
    "price": 2199.9,
    "stock": 42,
    "active": true
  },
  "match_fields": [
    "email"
  ]
}
'

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    data: {product_name: 'Laptop Pro 16', price: 2199.9, stock: 42, active: true},
    match_fields: ['email']
  })
};

fetch('https://{host}/v2/workspaces/slug:ai-collection-v3/webhooks/v1/collections/{collection_id}/data/upsert', 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/upsert"

payload = {
    "data": {
        "product_name": "Laptop Pro 16",
        "price": 2199.9,
        "stock": 42,
        "active": True
    },
    "match_fields": ["email"]
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

{
  "operation": "upserted",
  "result": {}
}

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