diff --git a/src/physics/function_cluster_objects.js b/src/physics/function_cluster_objects.js
new file mode 100644
index 0000000..c086347
--- /dev/null
+++ b/src/physics/function_cluster_objects.js
@@ -0,0 +1,16 @@
+export const function_name = "cluster_objects";
+
+export const schema = {
+  "type": "function",
+  "function": {
+    "name": "cluster_objects",
+    "description": "Use the position of all objects in the scene, by object type, to calculate k-means clusters, suggest new positions for each object at the centerpoint of each respective cluster."
+  }
+};
+
+export function cluster_objects (worldState, params) {
+  const stuff = {
+    "objects": worldState.objects.map(obj => obj.json)
+  };
+  return JSON.stringify(stuff);
+}
diff --git a/src/physics/physics.js b/src/physics/physics.js
index 51354f7..bd0cb11 100644
--- a/src/physics/physics.js
+++ b/src/physics/physics.js
@@ -8,6 +8,7 @@
 import * as AddObjectsFunction from './function_add_objects.js';
 import * as RemoveObjectsFunction from './function_remove_objects.js';
 import * as GetSpatialLayoutFunction from './function_get_spatial_layout.js';
+import * as ClusterObjectsFunction from './function_cluster_objects.js';
 
 import { Simulation } from '../simulation.js';
 
@@ -67,6 +68,7 @@ export class PhysicsSimulation extends Simulation {
   get toolSchemas () {
     return [
       GetSpatialLayoutFunction.schema,
+      ClusterObjectsFunction.schema,
       AddObjectsFunction.schema,
       RemoveObjectsFunction.schema,
     ];
@@ -83,6 +85,9 @@ export class PhysicsSimulation extends Simulation {
       "remove_objects": args => {
         return RemoveObjectsFunction.remove_objects(this.worldState, args);
       },
+      "cluster_objects": args => {
+        return ClusterObjectsFunction.cluster_objects(this.worldState, args);
+      }
     };
   }