diff --git a/robot-server/simulators/test.json b/robot-server/simulators/test.json
index 695be0803e1..4ff4b420e2c 100644
--- a/robot-server/simulators/test.json
+++ b/robot-server/simulators/test.json
@@ -1,4 +1,94 @@
 {
+  "attached_instruments": {
+    "right": {
+      "model": "p300_single_v1",
+      "id": "321"
+    },
+    "left": {
+      "model": "p10_single_v1",
+      "id": "123"
+    }
+  },
+  "attached_modules": {
+    "thermocycler": [
+      {
+        "model": "thermocyclerModuleV1",
+        "serial_number": "therm-123",
+        "calls": [
+          {
+            "function_name": "set_temperature",
+            "kwargs": {
+              "temperature": 3,
+              "hold_time_seconds": 1,
+              "hold_time_minutes": 2,
+              "ramp_rate": 4,
+              "volume": 5
+            }
+          },
+          {
+            "function_name": "set_lid_temperature",
+            "kwargs": {
+              "temperature": 4
+            }
+          }
+        ]
+      }
+    ],
+    "heatershaker": [
+      {
+        "model": "heaterShakerModuleV1",
+        "serial_number": "hs-123",
+        "calls": []
+      }
+    ],
+    "tempdeck": [
+      {
+        "model": "temperatureModuleV1",
+        "serial_number": "temp-123",
+        "calls": [
+          {
+            "function_name": "start_set_temperature",
+            "kwargs": {
+              "celsius": 3
+            }
+          },
+          {
+            "function_name": "await_temperature",
+            "kwargs": {
+              "awaiting_temperature": null
+            }
+          }
+        ]
+      }
+    ],
+    "magdeck": [
+      {
+        "model": "magneticModuleV2",
+        "serial_number": "mag-123",
+        "calls": [
+          {
+            "function_name": "engage",
+            "kwargs": {
+              "height": 4
+            }
+          }
+        ]
+      },
+      {
+        "model": "magneticModuleV1",
+        "serial_number": "mag-1234",
+        "calls": [
+          {
+            "function_name": "engage",
+            "kwargs": {
+              "height": 4
+            }
+          }
+        ]
+      }
+    ]
+  }
+}{
   "attached_instruments": {
     "right": {
       "model": "p300_single_v2",