diff --git a/builder/builder_api.py b/builder/builder_api.py
index 1864282..cdf8f01 100644
--- a/builder/builder_api.py
+++ b/builder/builder_api.py
@@ -7,12 +7,36 @@
 """
 import os
 import json
-from pprint import pformat as pf
 import warnings
 
 from process_bigraph import Process, Step, Edge, Composite, ProcessTypes
 from bigraph_schema.protocols import local_lookup_module
-from bigraph_viz import plot_bigraph
+from bigraph_viz.diagram import plot_bigraph
+
+def custom_pf(d, indent=0):
+    """Custom dictionary formatter to achieve specific indentation styles."""
+    items = []
+    for k, v in d.items():
+        key_str = f"{repr(k)}: "
+        if isinstance(v, dict):
+            if v:  # Check if the dictionary is not empty
+                value_str = custom_pf(v, indent + 3)
+            else:
+                value_str = "{}"
+        else:
+            value_str = repr(v)
+        items.append(f"{' ' * indent}{key_str}{value_str}")
+
+    # Use f-string for final formatting, incorporating items_str
+    items_str = ',\n'.join(items)
+    if indent > 0:
+        return f"{{\n{items_str}\n{' ' * (indent - 4)}}}"
+    else:
+        return f"{{\n{items_str}\n}}"
+
+
+
+# Examp
 
 
 EDGE_KEYS = ['process', 'step', 'edge']  # todo -- replace this with core.check() or similar
@@ -93,7 +117,7 @@ def register_process(self, process_name, address=None):
             def decorator(cls):
                 if not issubclass(cls, Edge):
                     raise TypeError(f"The class {cls.__name__} must be a subclass of Edge")
-                self.core.process_registry.register(process_name, cls)
+                self.core.process_registry.register(process_name, cls, force=True)
                 return cls
             return decorator
 
@@ -106,12 +130,12 @@ def decorator(cls):
 
                 if addr.startswith('!'):
                     process_class = local_lookup_module(addr[1:])
-                    self.core.process_registry.register(process_name, process_class)
+                    self.core.process_registry.register(process_name, process_class, force=True)
                 else:
                     raise ValueError('Only local addresses starting with "!" are supported')
             # Check if address is a class object
             elif issubclass(address, Edge):
-                self.core.process_registry.register(process_name, address)
+                self.core.process_registry.register(process_name, address, force=True)
             else:
                 raise TypeError(f"Unsupported address type for {process_name}: {type(address)}. Registration failed.")
 
@@ -123,7 +147,8 @@ def top(self):
             return self
 
     def __repr__(self):
-        return f"Builder({pf(self.tree)})"
+        return custom_pf(dict_from_builder_tree(self.tree))
+        # return f"Builder(\n{pf(self.tree)})"
 
     def __setitem__(self, keys, value):
         # Convert single key to tuple
@@ -237,7 +262,9 @@ def compile(self):
                 self.schema,
                 dict_from_builder_tree(self.tree)
             )
-            self.compiled_composite = Composite({'state': tree, 'composition': self.schema})
+            self.compiled_composite = Composite(
+                {'state': tree, 'composition': self.schema},
+                core=self.core)
 
             # reset the builder tree
             self.update_tree(self.compiled_composite.composition, self.compiled_composite.state)
@@ -262,7 +289,7 @@ def run(self, interval):
             self.compile()
         self.compiled_composite.run(interval)
 
-    def ports(self):
+    def ports(self, print_ports=False):
         # self.compile()
         tree_dict = dict_from_builder_tree(self.tree)
         tree_type = tree_dict.get('_type')
@@ -271,7 +298,11 @@ def ports(self):
         elif tree_type not in EDGE_KEYS:
             warnings.warn(f"Expected '_type' to be in {EDGE_KEYS}, found '{tree_type}' instead.")
         elif tree_type:
-            return get_process_ports(tree_dict, self.schema)
+            process_ports = get_process_ports(tree_dict, self.schema)
+            if not print_ports:
+                return process_ports
+            else:
+                print(custom_pf(process_ports))
 
     def visualize(self, filename=None, out_dir=None, **kwargs):
         if filename and not out_dir:
@@ -286,7 +317,7 @@ def visualize(self, filename=None, out_dir=None, **kwargs):
             tree_dict,
             out_dir=out_dir,
             filename=filename,
-            show_process_schema=False,
+            # show_process_schema=False,
             **kwargs)
 
     def get_results(self, query=None):
@@ -308,7 +339,7 @@ def emitter(self, name='ram-emitter', emit_keys=None):
 
 
 def build_gillespie():
-    from process_bigraph.experiments.minimal_gillespie import GillespieEvent  #, GillespieInterval
+    from process_bigraph.experiments.minimal_gillespie import GillespieEvent #, GillespieInterval
 
     gillespie = Builder()
 
@@ -339,9 +370,12 @@ def build_gillespie():
     )
     gillespie['interval_process'].add_process(
         name='GillespieInterval',
-        inputs={'port_id': ['store']}  # we should be able to set the wires directly like this
+        # inputs={'port_id': ['store']}  # we should be able to set the wires directly like this
     )
 
+    ## visualize part-way through build
+    gillespie.visualize(filename='bigraph1', out_dir='out')
+
     ## choose an emitter
     gillespie.emitter(name='ram-emitter', path=[])  # choose the emitter, path=[] would be all
     gillespie.emitter(name='csv-emitter', path=['cell1', 'internal'], emit_tree={})  # add a second emitter
diff --git a/notebooks/demo.ipynb b/notebooks/demo.ipynb
index d585251..ae0a2ff 100644
--- a/notebooks/demo.ipynb
+++ b/notebooks/demo.ipynb
@@ -49,7 +49,7 @@
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "['console-emitter', 'ram-emitter']\n"
+      "['ram-emitter', 'console-emitter']\n"
      ]
     }
    ],
@@ -79,7 +79,7 @@
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "['console-emitter', 'GillespieEvent', 'GillespieInterval', 'ram-emitter']\n"
+      "['GillespieInterval', 'ram-emitter', 'console-emitter', 'GillespieEvent']\n"
      ]
     }
    ],
@@ -94,16 +94,162 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# ## add processes\n",
-    "# b['event_process'].add_process(\n",
-    "#     name='GillespieEvent',\n",
-    "#     kdeg=1.0,  # kwargs fill parameters in the config\n",
-    "# )"
+    "## add processes\n",
+    "b['event_process'].add_process(\n",
+    "    name='GillespieEvent',\n",
+    "    kdeg=1.0,  # kwargs fill parameters in the config\n",
+    ")"
    ]
   },
   {
    "cell_type": "code",
    "execution_count": 7,
+   "id": "b094f1e5-5202-48d0-8bdd-57bbdded7fd1",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "<process_bigraph.composite.Composite at 0x10985bd90>"
+      ]
+     },
+     "execution_count": 7,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "b.compile()"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 8,
+   "id": "5ea31425-a8bb-45c3-a31d-77714cc8c137",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "{\n",
+      "'_inputs': {\n",
+      "   'mRNA': 'map[float]',\n",
+      "   'DNA': {\n",
+      "      'A gene': 'float',\n",
+      "      'B gene': 'float'\n",
+      "  }\n",
+      "},\n",
+      "'_outputs': {\n",
+      "   'mRNA': 'map[float]'\n",
+      "}\n",
+      "}\n"
+     ]
+    }
+   ],
+   "source": [
+    "b['event_process'].ports(True)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 9,
+   "id": "c9f462bb-5316-4724-aa8e-b3b71eb379b2",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "{\n",
+       "'event_process': {\n",
+       "   '_type': 'process',\n",
+       "   'address': 'local:GillespieEvent',\n",
+       "   'config': {\n",
+       "      'kdeg': 1.0,\n",
+       "      'ktsc': 5.0\n",
+       "  },\n",
+       "   'inputs': {},\n",
+       "   'outputs': {},\n",
+       "   'instance': <process_bigraph.experiments.minimal_gillespie.GillespieEvent object at 0x1079c1490>,\n",
+       "   'interval': 1.0\n",
+       "},\n",
+       "'global_time': 0.0\n",
+       "}"
+      ]
+     },
+     "execution_count": 9,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "b"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 10,
+   "id": "79809baf-1d87-475a-b85f-3729f4716cb4",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "image/svg+xml": [
+       "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?>\n",
+       "<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\"\n",
+       " \"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\">\n",
+       "<!-- Generated by graphviz version 9.0.0 (0)\n",
+       " -->\n",
+       "<!-- Title: bigraph Pages: 1 -->\n",
+       "<svg width=\"173pt\" height=\"82pt\"\n",
+       " viewBox=\"0.00 0.00 177.73 84.28\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
+       "<g id=\"graph0\" class=\"graph\" transform=\"scale(0.972222 0.972222) rotate(0) translate(4 80.28)\">\n",
+       "<title>bigraph</title>\n",
+       "<polygon fill=\"white\" stroke=\"none\" points=\"-4,4 -4,-80.28 173.73,-80.28 173.73,4 -4,4\"/>\n",
+       "<!-- (&#39;global_time&#39;,) -->\n",
+       "<g id=\"node1\" class=\"node\">\n",
+       "<title>(&#39;global_time&#39;,)</title>\n",
+       "<ellipse fill=\"none\" stroke=\"black\" stroke-width=\"2\" cx=\"38.14\" cy=\"-38.14\" rx=\"38.14\" ry=\"38.14\"/>\n",
+       "<text text-anchor=\"start\" x=\"9.48\" y=\"-34.54\" font-family=\"Times,serif\" font-size=\"12.00\">global_time</text>\n",
+       "</g>\n",
+       "<!-- (&#39;event_process&#39;,) -->\n",
+       "<g id=\"node2\" class=\"node\">\n",
+       "<title>(&#39;event_process&#39;,)</title>\n",
+       "<polygon fill=\"none\" stroke=\"black\" stroke-width=\"2\" points=\"169.73,-56.14 94.55,-56.14 94.55,-20.14 169.73,-20.14 169.73,-56.14\"/>\n",
+       "<text text-anchor=\"start\" x=\"98.15\" y=\"-34.54\" font-family=\"Times,serif\" font-size=\"12.00\">event_process</text>\n",
+       "</g>\n",
+       "</g>\n",
+       "</svg>\n"
+      ],
+      "text/plain": [
+       "<graphviz.graphs.Digraph at 0x1079e53a0>"
+      ]
+     },
+     "execution_count": 10,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "b.visualize()"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 11,
+   "id": "72088795-49c9-4e28-b539-1bdacd70ea91",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# from builder.builder_api import Builder, dict_from_builder_tree\n",
+    "# tree_dict = dict_from_builder_tree(b.tree)\n",
+    "\n",
+    "# tree_dict"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 12,
    "id": "1ee84904801a9ab",
    "metadata": {
     "ExecuteTime": {
@@ -123,8 +269,8 @@
     "        'B': 'float',\n",
     "    }\n",
     "\n",
-    "    def __init__(self, config):\n",
-    "        super().__init__(config)\n",
+    "    def __init__(self, config, core):\n",
+    "        super().__init__(config, core)\n",
     "\n",
     "    def schema(self):\n",
     "        return {\n",
@@ -144,7 +290,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 8,
+   "execution_count": 13,
    "id": "dae8ca8db70c4845",
    "metadata": {
     "ExecuteTime": {
@@ -160,7 +306,7 @@
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "['ram-emitter', 'GillespieEvent', 'console-emitter', 'GillespieInterval', 'toy']\n"
+      "['GillespieInterval', 'console-emitter', 'toy', 'GillespieEvent', 'ram-emitter']\n"
      ]
     }
    ],
@@ -168,14 +314,6 @@
     "b.list_processes()"
    ]
   },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "id": "1ab07d86-695d-4113-8bbb-66bebc7b22ce",
-   "metadata": {},
-   "outputs": [],
-   "source": []
-  },
   {
    "cell_type": "code",
    "execution_count": null,
@@ -186,7 +324,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 9,
+   "execution_count": 14,
    "id": "8b1f49a78de17642",
    "metadata": {
     "ExecuteTime": {
@@ -198,32 +336,14 @@
      "outputs_hidden": false
     }
    },
-   "outputs": [
-    {
-     "ename": "TypeError",
-     "evalue": "__init__() takes 2 positional arguments but 3 were given",
-     "output_type": "error",
-     "traceback": [
-      "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
-      "\u001b[0;31mTypeError\u001b[0m                                 Traceback (most recent call last)",
-      "Cell \u001b[0;32mIn[9], line 1\u001b[0m\n\u001b[0;32m----> 1\u001b[0m \u001b[43mb\u001b[49m\u001b[43m[\u001b[49m\u001b[38;5;124;43m'\u001b[39;49m\u001b[38;5;124;43mtoy\u001b[39;49m\u001b[38;5;124;43m'\u001b[39;49m\u001b[43m]\u001b[49m\u001b[38;5;241;43m.\u001b[39;49m\u001b[43madd_process\u001b[49m\u001b[43m(\u001b[49m\u001b[43mname\u001b[49m\u001b[38;5;241;43m=\u001b[39;49m\u001b[38;5;124;43m'\u001b[39;49m\u001b[38;5;124;43mtoy\u001b[39;49m\u001b[38;5;124;43m'\u001b[39;49m\u001b[43m)\u001b[49m\n",
-      "File \u001b[0;32m~/code/bigraph-builder/builder/builder_api.py:202\u001b[0m, in \u001b[0;36mBuilder.add_process\u001b[0;34m(self, name, config, inputs, outputs, **kwargs)\u001b[0m\n\u001b[1;32m    193\u001b[0m initial_state \u001b[38;5;241m=\u001b[39m {\n\u001b[1;32m    194\u001b[0m         \u001b[38;5;124m'\u001b[39m\u001b[38;5;124m_type\u001b[39m\u001b[38;5;124m'\u001b[39m: edge_type,\n\u001b[1;32m    195\u001b[0m         \u001b[38;5;124m'\u001b[39m\u001b[38;5;124maddress\u001b[39m\u001b[38;5;124m'\u001b[39m: \u001b[38;5;124mf\u001b[39m\u001b[38;5;124m'\u001b[39m\u001b[38;5;124mlocal:\u001b[39m\u001b[38;5;132;01m{\u001b[39;00mname\u001b[38;5;132;01m}\u001b[39;00m\u001b[38;5;124m'\u001b[39m,  \u001b[38;5;66;03m# TODO -- only support local right now?\u001b[39;00m\n\u001b[0;32m   (...)\u001b[0m\n\u001b[1;32m    198\u001b[0m         \u001b[38;5;124m'\u001b[39m\u001b[38;5;124moutputs\u001b[39m\u001b[38;5;124m'\u001b[39m: outputs \u001b[38;5;129;01mor\u001b[39;00m {},\n\u001b[1;32m    199\u001b[0m     }\n\u001b[1;32m    201\u001b[0m initial_schema \u001b[38;5;241m=\u001b[39m {\u001b[38;5;124m'\u001b[39m\u001b[38;5;124m_type\u001b[39m\u001b[38;5;124m'\u001b[39m: edge_type}\n\u001b[0;32m--> 202\u001b[0m schema, state \u001b[38;5;241m=\u001b[39m \u001b[38;5;28;43mself\u001b[39;49m\u001b[38;5;241;43m.\u001b[39;49m\u001b[43mcore\u001b[49m\u001b[38;5;241;43m.\u001b[39;49m\u001b[43mcomplete\u001b[49m\u001b[43m(\u001b[49m\u001b[43minitial_schema\u001b[49m\u001b[43m,\u001b[49m\u001b[43m \u001b[49m\u001b[43minitial_state\u001b[49m\u001b[43m)\u001b[49m\n\u001b[1;32m    204\u001b[0m \u001b[38;5;28mself\u001b[39m\u001b[38;5;241m.\u001b[39mtree \u001b[38;5;241m=\u001b[39m builder_tree_from_dict(state)\n\u001b[1;32m    205\u001b[0m \u001b[38;5;28mself\u001b[39m\u001b[38;5;241m.\u001b[39mschema \u001b[38;5;241m=\u001b[39m schema \u001b[38;5;129;01mor\u001b[39;00m {}\n",
-      "File \u001b[0;32m~/code/bigraph-schema/bigraph_schema/type_system.py:1246\u001b[0m, in \u001b[0;36mTypeSystem.complete\u001b[0;34m(self, initial_schema, initial_state)\u001b[0m\n\u001b[1;32m   1242\u001b[0m full_schema \u001b[38;5;241m=\u001b[39m \u001b[38;5;28mself\u001b[39m\u001b[38;5;241m.\u001b[39maccess(\n\u001b[1;32m   1243\u001b[0m     initial_schema)\n\u001b[1;32m   1245\u001b[0m \u001b[38;5;66;03m# hydrate the state given the initial composition\u001b[39;00m\n\u001b[0;32m-> 1246\u001b[0m state \u001b[38;5;241m=\u001b[39m \u001b[38;5;28;43mself\u001b[39;49m\u001b[38;5;241;43m.\u001b[39;49m\u001b[43mhydrate\u001b[49m\u001b[43m(\u001b[49m\n\u001b[1;32m   1247\u001b[0m \u001b[43m    \u001b[49m\u001b[43mfull_schema\u001b[49m\u001b[43m,\u001b[49m\n\u001b[1;32m   1248\u001b[0m \u001b[43m    \u001b[49m\u001b[43minitial_state\u001b[49m\u001b[43m)\u001b[49m\n\u001b[1;32m   1250\u001b[0m \u001b[38;5;66;03m# fill in the parts of the composition schema\u001b[39;00m\n\u001b[1;32m   1251\u001b[0m \u001b[38;5;66;03m# determined by the state\u001b[39;00m\n\u001b[1;32m   1252\u001b[0m schema, state \u001b[38;5;241m=\u001b[39m \u001b[38;5;28mself\u001b[39m\u001b[38;5;241m.\u001b[39minfer_schema(\n\u001b[1;32m   1253\u001b[0m     full_schema,\n\u001b[1;32m   1254\u001b[0m     state)\n",
-      "File \u001b[0;32m~/code/bigraph-schema/bigraph_schema/type_system.py:1237\u001b[0m, in \u001b[0;36mTypeSystem.hydrate\u001b[0;34m(self, schema, state)\u001b[0m\n\u001b[1;32m   1235\u001b[0m \u001b[38;5;28;01mdef\u001b[39;00m \u001b[38;5;21mhydrate\u001b[39m(\u001b[38;5;28mself\u001b[39m, schema, state):\n\u001b[1;32m   1236\u001b[0m     \u001b[38;5;66;03m# TODO: support partial hydration (!)\u001b[39;00m\n\u001b[0;32m-> 1237\u001b[0m     hydrated \u001b[38;5;241m=\u001b[39m \u001b[38;5;28;43mself\u001b[39;49m\u001b[38;5;241;43m.\u001b[39;49m\u001b[43mhydrate_state\u001b[49m\u001b[43m(\u001b[49m\u001b[43mschema\u001b[49m\u001b[43m,\u001b[49m\u001b[43m \u001b[49m\u001b[43mstate\u001b[49m\u001b[43m)\u001b[49m\n\u001b[1;32m   1238\u001b[0m     \u001b[38;5;28;01mreturn\u001b[39;00m \u001b[38;5;28mself\u001b[39m\u001b[38;5;241m.\u001b[39mfill(schema, hydrated)\n",
-      "File \u001b[0;32m~/code/bigraph-schema/bigraph_schema/type_system.py:1209\u001b[0m, in \u001b[0;36mTypeSystem.hydrate_state\u001b[0;34m(self, schema, state)\u001b[0m\n\u001b[1;32m   1207\u001b[0m \u001b[38;5;28;01mdef\u001b[39;00m \u001b[38;5;21mhydrate_state\u001b[39m(\u001b[38;5;28mself\u001b[39m, schema, state):\n\u001b[1;32m   1208\u001b[0m     \u001b[38;5;28;01mif\u001b[39;00m \u001b[38;5;28misinstance\u001b[39m(state, \u001b[38;5;28mstr\u001b[39m) \u001b[38;5;129;01mor\u001b[39;00m \u001b[38;5;124m'\u001b[39m\u001b[38;5;124m_deserialize\u001b[39m\u001b[38;5;124m'\u001b[39m \u001b[38;5;129;01min\u001b[39;00m schema:\n\u001b[0;32m-> 1209\u001b[0m         result \u001b[38;5;241m=\u001b[39m \u001b[38;5;28;43mself\u001b[39;49m\u001b[38;5;241;43m.\u001b[39;49m\u001b[43mdeserialize\u001b[49m\u001b[43m(\u001b[49m\n\u001b[1;32m   1210\u001b[0m \u001b[43m            \u001b[49m\u001b[43mschema\u001b[49m\u001b[43m,\u001b[49m\n\u001b[1;32m   1211\u001b[0m \u001b[43m            \u001b[49m\u001b[43mstate\u001b[49m\u001b[43m)\u001b[49m\n\u001b[1;32m   1213\u001b[0m     \u001b[38;5;28;01melif\u001b[39;00m \u001b[38;5;28misinstance\u001b[39m(state, \u001b[38;5;28mdict\u001b[39m):\n\u001b[1;32m   1214\u001b[0m         \u001b[38;5;28;01mif\u001b[39;00m \u001b[38;5;28misinstance\u001b[39m(schema, \u001b[38;5;28mstr\u001b[39m):\n",
-      "File \u001b[0;32m~/code/bigraph-schema/bigraph_schema/type_system.py:606\u001b[0m, in \u001b[0;36mTypeSystem.deserialize\u001b[0;34m(self, schema, encoded)\u001b[0m\n\u001b[1;32m    603\u001b[0m     \u001b[38;5;28;01mif\u001b[39;00m encoded \u001b[38;5;129;01mis\u001b[39;00m \u001b[38;5;28;01mNone\u001b[39;00m:\n\u001b[1;32m    604\u001b[0m         encoded \u001b[38;5;241m=\u001b[39m \u001b[38;5;28mself\u001b[39m\u001b[38;5;241m.\u001b[39mdefault(schema)\n\u001b[0;32m--> 606\u001b[0m     \u001b[38;5;28;01mreturn\u001b[39;00m \u001b[43mdeserialize_function\u001b[49m\u001b[43m(\u001b[49m\n\u001b[1;32m    607\u001b[0m \u001b[43m        \u001b[49m\u001b[43mencoded\u001b[49m\u001b[43m,\u001b[49m\n\u001b[1;32m    608\u001b[0m \u001b[43m        \u001b[49m\u001b[43mfound\u001b[49m\u001b[43m,\u001b[49m\n\u001b[1;32m    609\u001b[0m \u001b[43m        \u001b[49m\u001b[38;5;28;43mself\u001b[39;49m\u001b[43m)\u001b[49m\n\u001b[1;32m    611\u001b[0m \u001b[38;5;28;01melif\u001b[39;00m \u001b[38;5;28misinstance\u001b[39m(encoded, \u001b[38;5;28mdict\u001b[39m):\n\u001b[1;32m    612\u001b[0m     result \u001b[38;5;241m=\u001b[39m {}\n",
-      "File \u001b[0;32m~/code/process-bigraph/process_bigraph/composite.py:94\u001b[0m, in \u001b[0;36mdeserialize_process\u001b[0;34m(encoded, schema, core)\u001b[0m\n\u001b[1;32m     89\u001b[0m interval \u001b[38;5;241m=\u001b[39m core\u001b[38;5;241m.\u001b[39mdeserialize(\n\u001b[1;32m     90\u001b[0m     \u001b[38;5;124m'\u001b[39m\u001b[38;5;124minterval\u001b[39m\u001b[38;5;124m'\u001b[39m,\n\u001b[1;32m     91\u001b[0m     encoded\u001b[38;5;241m.\u001b[39mget(\u001b[38;5;124m'\u001b[39m\u001b[38;5;124minterval\u001b[39m\u001b[38;5;124m'\u001b[39m))\n\u001b[1;32m     93\u001b[0m \u001b[38;5;28;01mif\u001b[39;00m \u001b[38;5;129;01mnot\u001b[39;00m \u001b[38;5;124m'\u001b[39m\u001b[38;5;124minstance\u001b[39m\u001b[38;5;124m'\u001b[39m \u001b[38;5;129;01min\u001b[39;00m deserialized:\n\u001b[0;32m---> 94\u001b[0m     process \u001b[38;5;241m=\u001b[39m \u001b[43minstantiate\u001b[49m\u001b[43m(\u001b[49m\u001b[43mconfig\u001b[49m\u001b[43m,\u001b[49m\u001b[43m \u001b[49m\u001b[43mcore\u001b[49m\u001b[43m)\u001b[49m\n\u001b[1;32m     95\u001b[0m     deserialized[\u001b[38;5;124m'\u001b[39m\u001b[38;5;124minstance\u001b[39m\u001b[38;5;124m'\u001b[39m] \u001b[38;5;241m=\u001b[39m process\n\u001b[1;32m     97\u001b[0m deserialized[\u001b[38;5;124m'\u001b[39m\u001b[38;5;124mconfig\u001b[39m\u001b[38;5;124m'\u001b[39m] \u001b[38;5;241m=\u001b[39m config\n",
-      "\u001b[0;31mTypeError\u001b[0m: __init__() takes 2 positional arguments but 3 were given"
-     ]
-    }
-   ],
+   "outputs": [],
    "source": [
     "b['toy'].add_process(name='toy')"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 15,
    "id": "329e64816e8ff626",
    "metadata": {
     "ExecuteTime": {
@@ -234,14 +354,25 @@
      "outputs_hidden": false
     }
    },
-   "outputs": [],
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "{'_inputs': {}, '_outputs': {}}"
+      ]
+     },
+     "execution_count": 15,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "b['toy'].ports()"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 16,
    "id": "3b1dd8569f3bb67a",
    "metadata": {
     "ExecuteTime": {
@@ -252,14 +383,58 @@
      "outputs_hidden": false
     }
    },
-   "outputs": [],
+   "outputs": [
+    {
+     "data": {
+      "image/svg+xml": [
+       "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?>\n",
+       "<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\"\n",
+       " \"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\">\n",
+       "<!-- Generated by graphviz version 9.0.0 (0)\n",
+       " -->\n",
+       "<!-- Title: bigraph Pages: 1 -->\n",
+       "<svg width=\"243pt\" height=\"82pt\"\n",
+       " viewBox=\"0.00 0.00 250.14 84.28\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
+       "<g id=\"graph0\" class=\"graph\" transform=\"scale(0.972222 0.972222) rotate(0) translate(4 80.28)\">\n",
+       "<title>bigraph</title>\n",
+       "<polygon fill=\"white\" stroke=\"none\" points=\"-4,4 -4,-80.28 246.14,-80.28 246.14,4 -4,4\"/>\n",
+       "<!-- (&#39;global_time&#39;,) -->\n",
+       "<g id=\"node1\" class=\"node\">\n",
+       "<title>(&#39;global_time&#39;,)</title>\n",
+       "<ellipse fill=\"none\" stroke=\"black\" stroke-width=\"2\" cx=\"38.14\" cy=\"-38.14\" rx=\"38.14\" ry=\"38.14\"/>\n",
+       "<text text-anchor=\"start\" x=\"9.48\" y=\"-34.54\" font-family=\"Times,serif\" font-size=\"12.00\">global_time</text>\n",
+       "</g>\n",
+       "<!-- (&#39;event_process&#39;,) -->\n",
+       "<g id=\"node2\" class=\"node\">\n",
+       "<title>(&#39;event_process&#39;,)</title>\n",
+       "<polygon fill=\"none\" stroke=\"black\" stroke-width=\"2\" points=\"169.73,-56.14 94.55,-56.14 94.55,-20.14 169.73,-20.14 169.73,-56.14\"/>\n",
+       "<text text-anchor=\"start\" x=\"98.15\" y=\"-34.54\" font-family=\"Times,serif\" font-size=\"12.00\">event_process</text>\n",
+       "</g>\n",
+       "<!-- (&#39;toy&#39;,) -->\n",
+       "<g id=\"node3\" class=\"node\">\n",
+       "<title>(&#39;toy&#39;,)</title>\n",
+       "<polygon fill=\"none\" stroke=\"black\" stroke-width=\"2\" points=\"242.14,-56.14 188.14,-56.14 188.14,-20.14 242.14,-20.14 242.14,-56.14\"/>\n",
+       "<text text-anchor=\"start\" x=\"207.47\" y=\"-34.54\" font-family=\"Times,serif\" font-size=\"12.00\">toy</text>\n",
+       "</g>\n",
+       "</g>\n",
+       "</svg>\n"
+      ],
+      "text/plain": [
+       "<graphviz.graphs.Digraph at 0x10985bcd0>"
+      ]
+     },
+     "execution_count": 16,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
-    "b.plot()"
+    "b.visualize()"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 17,
    "id": "f02c15797bdb73b8",
    "metadata": {
     "ExecuteTime": {
@@ -270,7 +445,20 @@
      "outputs_hidden": false
     }
    },
-   "outputs": [],
+   "outputs": [
+    {
+     "ename": "AssertionError",
+     "evalue": "",
+     "output_type": "error",
+     "traceback": [
+      "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
+      "\u001b[0;31mAssertionError\u001b[0m                            Traceback (most recent call last)",
+      "Cell \u001b[0;32mIn[17], line 1\u001b[0m\n\u001b[0;32m----> 1\u001b[0m \u001b[43mb\u001b[49m\u001b[43m[\u001b[49m\u001b[38;5;124;43m'\u001b[39;49m\u001b[38;5;124;43mtoy\u001b[39;49m\u001b[38;5;124;43m'\u001b[39;49m\u001b[43m]\u001b[49m\u001b[38;5;241;43m.\u001b[39;49m\u001b[43mconnect\u001b[49m\u001b[43m(\u001b[49m\u001b[43mport\u001b[49m\u001b[38;5;241;43m=\u001b[39;49m\u001b[38;5;124;43m'\u001b[39;49m\u001b[38;5;124;43mA\u001b[39;49m\u001b[38;5;124;43m'\u001b[39;49m\u001b[43m,\u001b[49m\u001b[43m \u001b[49m\u001b[43mtarget\u001b[49m\u001b[38;5;241;43m=\u001b[39;49m\u001b[38;5;124;43m'\u001b[39;49m\u001b[38;5;124;43mA_store\u001b[39;49m\u001b[38;5;124;43m'\u001b[39;49m\u001b[43m)\u001b[49m\n\u001b[1;32m      2\u001b[0m \u001b[38;5;66;03m# b['toy'].connect(port='B', target='B_store')  # TODO -- compile is trying to connect A at the wrong level??\u001b[39;00m\n\u001b[1;32m      3\u001b[0m \u001b[38;5;66;03m# b['toy'].connect(port='C', target='C_store')\u001b[39;00m\n",
+      "File \u001b[0;32m~/code/bigraph-builder/builder/builder_api.py:228\u001b[0m, in \u001b[0;36mBuilder.connect\u001b[0;34m(self, port, target)\u001b[0m\n\u001b[1;32m    227\u001b[0m \u001b[38;5;28;01mdef\u001b[39;00m \u001b[38;5;21mconnect\u001b[39m(\u001b[38;5;28mself\u001b[39m, port\u001b[38;5;241m=\u001b[39m\u001b[38;5;28;01mNone\u001b[39;00m, target\u001b[38;5;241m=\u001b[39m\u001b[38;5;28;01mNone\u001b[39;00m):\n\u001b[0;32m--> 228\u001b[0m     \u001b[38;5;28;01massert\u001b[39;00m \u001b[38;5;28mself\u001b[39m\u001b[38;5;241m.\u001b[39mcore\u001b[38;5;241m.\u001b[39mcheck(\u001b[38;5;124m'\u001b[39m\u001b[38;5;124medge\u001b[39m\u001b[38;5;124m'\u001b[39m, \u001b[38;5;28mself\u001b[39m\u001b[38;5;241m.\u001b[39mschema)\n\u001b[1;32m    229\u001b[0m     \u001b[38;5;28;01mif\u001b[39;00m port \u001b[38;5;129;01min\u001b[39;00m \u001b[38;5;28mself\u001b[39m\u001b[38;5;241m.\u001b[39mschema[\u001b[38;5;124m'\u001b[39m\u001b[38;5;124m_inputs\u001b[39m\u001b[38;5;124m'\u001b[39m]:\n\u001b[1;32m    230\u001b[0m         \u001b[38;5;28mself\u001b[39m\u001b[38;5;241m.\u001b[39mtree[\u001b[38;5;124m'\u001b[39m\u001b[38;5;124minputs\u001b[39m\u001b[38;5;124m'\u001b[39m][port] \u001b[38;5;241m=\u001b[39m target\n",
+      "\u001b[0;31mAssertionError\u001b[0m: "
+     ]
+    }
+   ],
    "source": [
     "b['toy'].connect(port='A', target='A_store')\n",
     "# b['toy'].connect(port='B', target='B_store')  # TODO -- compile is trying to connect A at the wrong level??\n",