diff --git a/REVERSEENGINEERING.md b/REVERSEENGINEERING.md
new file mode 100644
index 00000000..48322e97
--- /dev/null
+++ b/REVERSEENGINEERING.md
@@ -0,0 +1,19 @@
+# Reverse Engineering InteractiveAI Platform
+
+## Apidocs
+
+* [Event-Api](http://localhost:5001/docs)
+* [Context-Api](http://localhost:5100/docs)
+* [Historic-Api](http://localhost:5200/docs)
+
+## Notes
+
+* Use cases are statically defined at build:
+  e.g. `class MetadataSchemaRTE(MetadataSchema):` is located in `backend/resources`.
+* Users have
+* Schemas for use-case specific event types are there, but seem not published in swagger, e.g. `class MetadataSchemaRTE(MetadataSchema):` found but not
+  in [Event-Api](http://localhost:5001/docs)
+
+## Wiring
+
+![Wiring.drawio.png](Wiring.drawio.png)
\ No newline at end of file
diff --git a/Wiring.drawio.png b/Wiring.drawio.png
new file mode 100644
index 00000000..fa164c34
Binary files /dev/null and b/Wiring.drawio.png differ
diff --git a/backend/context-service/api/schemas.py b/backend/context-service/api/schemas.py
index 3752e236..178c28ec 100644
--- a/backend/context-service/api/schemas.py
+++ b/backend/context-service/api/schemas.py
@@ -1,7 +1,7 @@
 import importlib
 
 from apiflask import Schema
-from apiflask.fields import DateTime, Dict, Integer, String
+from apiflask.fields import DateTime, Dict, Integer, String, List, Nested
 from apiflask.validators import Length, OneOf
 from marshmallow import ValidationError, validates_schema
 
@@ -11,13 +11,19 @@
 class MetadataSchema(Schema):
     pass
 
+# workaround to expose schema in openapi.json: copy-paste from resources/Railway
+class MetadataSchemaRailway(MetadataSchema):
+    trains = List(Dict(), required=False)
+    list_of_target = Dict(required=False)
+    direction_agents = List(Integer(), required=False)
+    position_agents = Dict(required=False)
 
 class ContextIn(Schema):
     use_case = String(
         required=True, validate=OneOf(["PowerGrid", "Railway", "ATM"])
     )
     date = DateTime(format="iso")
-    data = Dict()
+    data = Nested(MetadataSchemaRailway)
 
     @validates_schema
     def validate_metadata(self, data, **kwargs):
@@ -45,7 +51,7 @@ class ContextOut(Schema):
     id_context = String()
     use_case = String()
     date = DateTime(format="iso")
-    data = Dict()
+    data = Nested(MetadataSchemaRailway)
 
 
 class UseCaseIn(Schema):
diff --git a/backend/event-service/api/schemas.py b/backend/event-service/api/schemas.py
index 8b1302ba..9c3d9765 100644
--- a/backend/event-service/api/schemas.py
+++ b/backend/event-service/api/schemas.py
@@ -2,14 +2,29 @@
 
 from api.models import UseCaseModel
 from apiflask import Schema
-from apiflask.fields import Boolean, DateTime, Dict, Integer, String
+from apiflask.fields import Boolean, DateTime, Dict, Integer, String, List, Float, Nested
 from apiflask.validators import Length, OneOf
 from marshmallow import ValidationError, validates_schema
 
-
 class MetadataSchema(Schema):
     pass
 
+# workaround to expose schema in openapi.json: copy-paste from resources/Railway
+class MetadataSchemaRailway(MetadataSchema):
+    agent_id = String(allow_none=True, required=True)
+    event_type = String(required=True)
+    agent_position = List(
+        Integer(allow_none=True), allow_none=True, default=None
+    )
+    delay = Integer(required=True)
+    id_train = String(allow_none=True, required=True)
+    malfunction_stop_position = List(Integer(allow_none=True), allow_none=True)
+    num_rame = String(allow_none=True, default=None)
+    tmp_rame = String(allow_none=True, default=None)
+    travel_plan = List(Dict(), allow_none=True)
+    longitude = Float(allow_none=True, default=None)
+    latitude = Float(allow_none=True, default=None)
+    simulation_name = String(allow_none=True, default=None)
 
 class EventIn(Schema):
     use_case = String(required=True, validate=Length(1, 255))
@@ -21,7 +36,7 @@ class EventIn(Schema):
         required=True,
         validate=OneOf(["ND", "HIGH", "MEDIUM", "LOW", "ROUTINE"]),
     )
-    data = Dict()
+    data = Nested(MetadataSchemaRailway)
     is_active = Boolean()
     parent_event_id = String(allow_none=True)
 
@@ -57,7 +72,7 @@ class EventOut(Schema):
     start_date = DateTime(format="iso", allow_none=True)
     end_date = DateTime(format="iso", allow_none=True)
     criticality = String()
-    data = Dict()
+    data = Nested(MetadataSchemaRailway)
     is_active = Boolean()
     parent_event_id = String(allow_none=True)
 
diff --git a/config/dev/cab-standalone/docker-compose.sh b/config/dev/cab-standalone/docker-compose.sh
index 281eeeec..bac36288 100755
--- a/config/dev/cab-standalone/docker-compose.sh
+++ b/config/dev/cab-standalone/docker-compose.sh
@@ -44,4 +44,4 @@ fi
 echo "HOST_IP=${HOST_IP}" >> .env
 
 cat .env
-docker-compose up -d
+docker compose up -d
diff --git a/config/dev/cab-standalone/docker-compose.yml b/config/dev/cab-standalone/docker-compose.yml
index 0f247617..8595e112 100644
--- a/config/dev/cab-standalone/docker-compose.yml
+++ b/config/dev/cab-standalone/docker-compose.yml
@@ -11,8 +11,8 @@ services:
       - FLASK_APP=app:create_app('dev')
       - PYTHONPATH=/code
       - FLASK_ENV=development
-      - URL_INTROSPECT=http://frontend:80/auth/check_token
-      - KEYCLOAK_SERVER_URL=http://frontend:80/auth/
+      - URL_INTROSPECT=http://${GATEWAY_HOSTNAME:-frontend}:80/auth/check_token
+      - KEYCLOAK_SERVER_URL=http://${GATEWAY_HOSTNAME:-frontend}:80/auth/
       - OPFAB_CLIENT_SECRET=opfab-keycloak-secret
       - TZ=UTC   # Set timezone to UTC
 
@@ -34,19 +34,19 @@ services:
     restart: unless-stopped
     environment:
       - CARDS_PUBLICATION_SERVICE=http://cards-publication:8080
-      - GATEWAY_SERVICE=http://frontend:80
+      - GATEWAY_SERVICE=http://${GATEWAY_HOSTNAME:-frontend}:80
       - HISTORIC_SERVICE=http://cabhistoric:5000
       - DATABASE_URL=postgresql://postgres:postgres@db_postgres_event:5432/cab-event
       - FLASK_APP=app:create_app('dev')
       - PYTHONPATH=/code
       - FLASK_ENV=development
-      - URL_INTROSPECT=http://frontend:80/auth/check_token
-      - KEYCLOAK_SERVER_URL=http://frontend:80/auth/
+      - URL_INTROSPECT=http://${GATEWAY_HOSTNAME:-frontend}:80/auth/check_token
+      - KEYCLOAK_SERVER_URL=http://${GATEWAY_HOSTNAME:-frontend}:80/auth/
       - OPFAB_CLIENT_SECRET=opfab-keycloak-secret
       - TZ=UTC   # Set timezone to UTC
     command: sh -c "./entrypoint.sh"
     ports:
-      - 5000:5000
+      - 5001:5000
     volumes:
       - ../../../backend/event-service:/code
     depends_on:
@@ -63,8 +63,8 @@ services:
       - FLASK_APP=app:create_app('dev')
       - FLASK_ENV=development
       - PYTHONPATH=/my_app
-      - URL_INTROSPECT=http://frontend:80/auth/check_token
-      - KEYCLOAK_SERVER_URL=http://frontend:80/auth/
+      - URL_INTROSPECT=http://${GATEWAY_HOSTNAME:-frontend}:80/auth/check_token
+      - KEYCLOAK_SERVER_URL=http://${GATEWAY_HOSTNAME:-frontend}:80/auth/
       - OPFAB_CLIENT_SECRET=opfab-keycloak-secret
       - TZ=UTC   # Set timezone to UTC
     restart: unless-stopped
@@ -130,7 +130,7 @@ services:
     restart: unless-stopped
 
   frontend:
-    container_name: frontend
+    container_name: ${GATEWAY_HOSTNAME:-frontend}
     build:
       context: ../../../frontend
       dockerfile: Dockerfile
@@ -148,6 +148,8 @@ services:
       - './nginx-cors-permissive.conf:/etc/nginx/conf.d/default.conf'
     ports:
       - '3200:80'
+      # tokens are issued for ${GATEWAY_HOSTNAME:-frontend}:80 (see KEYCLOAK_SERVER_URL below), need to match the URL
+      - '80:80'
     depends_on:
       - cabrecommendation
       - cabevent
@@ -163,15 +165,17 @@ services:
     build:
       context: ../../../backend
       dockerfile: Recommendation-Service-Dockerfile
+    # fix platform as otherwise, we get compile errors on macOS....
+    platform: "linux/amd64"
     restart: unless-stopped
     environment:
-      - GATEWAY_SERVICE=http://frontend:80
+      - GATEWAY_SERVICE=http://${GATEWAY_HOSTNAME:-frontend}:80
       - DATABASE_URL=postgresql://postgres:postgres@db_postgres_recommendation:5432/cab-recommendation
       - FLASK_APP=app:create_app('dev')
       - PYTHONPATH=/my_app
       - FLASK_ENV=development
-      - URL_INTROSPECT=http://frontend:80/auth/check_token
-      - KEYCLOAK_SERVER_URL=http://frontend:80/auth/
+      - URL_INTROSPECT=http://${GATEWAY_HOSTNAME:-frontend}:80/auth/check_token
+      - KEYCLOAK_SERVER_URL=http://${GATEWAY_HOSTNAME:-frontend}:80/auth/
       - OPFAB_CLIENT_SECRET=opfab-keycloak-secret
       - TZ=UTC   # Set timezone to UTC
     command: sh -c "./entrypoint.sh"
@@ -206,8 +210,8 @@ services:
       - FLASK_APP=app:create_app('dev')
       - FLASK_ENV=development
       - PYTHONPATH=/my_app
-      - URL_INTROSPECT=http://frontend:80/auth/check_token
-      - KEYCLOAK_SERVER_URL=http://frontend:80/auth/
+      - URL_INTROSPECT=http://${GATEWAY_HOSTNAME:-frontend}:80/auth/check_token
+      - KEYCLOAK_SERVER_URL=http://${GATEWAY_HOSTNAME:-frontend}:80/auth/
       - OPFAB_CLIENT_SECRET=opfab-keycloak-secret
       - TZ=UTC   # Set timezone to UTC
     restart: unless-stopped
diff --git a/resources/bundles/deleteAllBundles.sh b/resources/bundles/deleteAllBundles.sh
index 41551266..0f22604c 100755
--- a/resources/bundles/deleteAllBundles.sh
+++ b/resources/bundles/deleteAllBundles.sh
@@ -12,7 +12,7 @@
 # is called from another folder
 cd "$(dirname "${BASH_SOURCE[0]}")"
 
-url=$2 
+url=$1
 if [ -z $url ] 
 then
 	url="http://localhost"
diff --git a/resources/getToken.sh b/resources/getToken.sh
index ccc48ba0..654dbed3 100755
--- a/resources/getToken.sh
+++ b/resources/getToken.sh
@@ -23,7 +23,7 @@ fi
 echo "Get token for user $username on $url"
 
 access_token_pattern='"access_token":"([^"]+)"'
-response=$(curl -s -X POST -d "username="$username"&password=test&grant_type=password&client_id=opfab-client" $url:3200/auth/token)
+response=$(curl -s -X POST -d "username="$username"&password=test&grant_type=password&client_id=opfab-client" $url:80/auth/token)
 if [[ $response =~ $access_token_pattern ]] ; then
 	export token=${BASH_REMATCH[1]}
 fi
diff --git a/resources/loadTestConf.sh b/resources/loadTestConf.sh
index e8bdd466..04739d0b 100755
--- a/resources/loadTestConf.sh
+++ b/resources/loadTestConf.sh
@@ -15,7 +15,8 @@ cd "$(dirname "${BASH_SOURCE[0]}")"
 url=$1 
 if [[ -z $url ]]
 then
-	url="http://localhost"
+  # tweak /etc/hosts to run from docker host!
+	url="http://frontend"
 fi
 (
 	cd bundles
diff --git a/usecases_examples/PowerGrid/README.md b/usecases_examples/PowerGrid/README.md
index 9c6fb0e0..28269b91 100644
--- a/usecases_examples/PowerGrid/README.md
+++ b/usecases_examples/PowerGrid/README.md
@@ -73,7 +73,7 @@ docker-compose up -d --build api
 ```
 
 The launched API might be accessible at this address: 
-http://SERVER_ADDRESS:5100
+http://SERVER_ADDRESS:5101
 
 The SERVER_ADDRESS will be the one of the computer used to launch the Docker command.
 
@@ -92,8 +92,8 @@ pip install -r requirements-app.txt
 docker-compose up -d --build app
 ```
 
-The launched app might be accessible at this address: 
-http://SERVER_ADDRESS:5100/
+The launched app will be accessible at this address: 
+http://SERVER_ADDRESS:5101/
 
 The SERVER_ADDRESS will be the one of the computer used to launch the Docker command.
 
@@ -115,11 +115,11 @@ python PowerGrid_poc_simulator_consol.py
 
 ### To launch the simulator app (BEST APPROACH)
 Open a web browser and navigate to the URL returned by Docker after running the containers. 
-This URL will typically be `http://localhost:5100/` unless you've configured a different port.
+This URL will typically be `http://localhost:5101/` unless you've configured a different port.
 
 Note: If you're running Docker on a remote machine or using Docker Toolbox on Windows, 
 you may need to replace 'localhost' with the appropriate IP address.
-For example : http://SERVER_ADDRESS:5100/  with **SERVER_ADDRESS** the one of your remote machine.
+For example : http://SERVER_ADDRESS:5101/  with **SERVER_ADDRESS** the one of your remote machine.
 
 ### Run the simulator in your terminal (optional)
 ```commandline
diff --git a/usecases_examples/PowerGrid/docker-compose.yml b/usecases_examples/PowerGrid/docker-compose.yml
index 2608c16a..e0a3e853 100644
--- a/usecases_examples/PowerGrid/docker-compose.yml
+++ b/usecases_examples/PowerGrid/docker-compose.yml
@@ -8,10 +8,11 @@ services:
     container_name: PowerGrid-simulator-app
     restart: always
     ports:
-      - "5100:5000"
+      - "5101:5000"
     volumes:
       - .:/code
-
+    networks:
+      - cab-standalone_default
   api:
     build:
       context: .
@@ -20,6 +21,14 @@ services:
     container_name: PowerGrid-simulator-api
     restart: always
     ports:
-      - "5100:5000"
+      - "5101:5000"
     volumes:
       - .:/code
+    networks:
+      - cab-standalone_default
+
+# allow for communication between simulator and cab
+networks:
+  cab-standalone_default:
+    name: cab-standalone_default
+    external: true
\ No newline at end of file