1  {
 2    "streams": [
 3      {
 4        "stream": {
 5          "name": "historical_rates",
 6          "json_schema": {},
 7          "supported_sync_modes": ["full_refresh", "incremental"]
 8        },
 9        "sync_mode": "incremental",
10        "destination_sync_mode": "append"
11      }
12    ]
13  }