Set a counter on a participant.
reset_after in the same call to enable auto-reset behavior. The key is passed as a path parameter.
This endpoint sets the counter to an absolute value, unlike the COUNTER rule action which increments the existing value. Use this for manual corrections or initializing counters from an external data source. If the counter does not exist, it is created.
API key passed in the X-API-Key header.
Counter value and optional reset_after