REST endpoint for querying in log traces (kusto based)

you can execute Kusto queries programmatically using the Azure Data Explorer (ADX) REST API.

here are your parameters

endpoint: https://<clusterName>.<region>.kusto.windows.net/v1/rest/query

HTTP Request:

• Method: POST
• Headers
  • Authorization: Bearer <your-access-token>
  • Content-Type: application/json
• Body 

{
  "db": "<your-database-name>",
  "csl": "traces | where timestamp > ago(60m) | parse message with xx 'instance=' instance ',' yy | summarize ['instances'] = dcount(instance) by bin(timestamp, 60sec)"
}