import requests

url = "https://app.langwatch.ai/api/traces/search"

payload = {
    "startDate": 123,
    "endDate": 123
}
headers = {
    "X-Auth-Token": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

{
  "traces": [
    "<unknown>"
  ],
  "pagination": {
    "totalHits": 123,
    "scrollId": "<string>"
  }
}