diff --git a/src/omotes_orchestrator/main.py b/src/omotes_orchestrator/main.py
index 4b8040d..60672f2 100644
--- a/src/omotes_orchestrator/main.py
+++ b/src/omotes_orchestrator/main.py
@@ -22,8 +22,16 @@
     JobProgressUpdate,
     JobCancel,
 )
+from omotes_sdk_protocol.work_flow_pb2 import RequestAvailableWorkflows
 from omotes_sdk.job import Job
-from omotes_sdk.workflow_type import WorkflowTypeManager, WorkflowType
+from omotes_sdk.workflow_type import (
+    WorkflowTypeManager,
+    WorkflowType,
+    WorkflowParameter,
+    ParameterType,
+    ParameterSchema,
+    ParameterStringFormat,
+)
 from google.protobuf import json_format
 
 from omotes_orchestrator.celery_interface import CeleryInterface
@@ -187,11 +195,7 @@ def start(self) -> None:
         self._resume_init_barriers(self.postgresql_if.get_all_jobs())
 
         self.celery_if.start()
-        self.omotes_if.start()
-        self.omotes_if.connect_to_job_submissions(
-            callback_on_new_job=self.new_job_submitted_handler
-        )
-        self.omotes_if.connect_to_job_cancellations(self.job_cancellation_handler)
+
         self.jobs_broker_if.start()
         self.jobs_broker_if.add_queue_subscription(
             "omotes_task_result_events", self.task_result_received
@@ -200,6 +204,19 @@ def start(self) -> None:
             "omotes_task_progress_events", self.task_progress_update
         )
 
+        self.omotes_if.start()
+        self.omotes_if.connect_to_request_available_workflows(
+            callback_on_request_workflows=self.request_workflows_handler
+        )
+        self.omotes_if.connect_to_job_submissions(
+            callback_on_new_job=self.new_job_submitted_handler
+        )
+        self.omotes_if.connect_to_job_cancellations(
+            callback_on_job_cancel=self.job_cancellation_handler
+        )
+
+        self.omotes_if.send_available_workflows(self.workflow_manager)
+
     def stop(self) -> None:
         """Stop the orchestrator."""
         self.omotes_if.stop()
@@ -325,6 +342,14 @@ def job_cancellation_handler(self, job_cancellation: JobCancel) -> None:
                 )
                 self._cleanup_job(job_id)
 
+    def request_workflows_handler(self, request_workflows: RequestAvailableWorkflows) -> None:
+        """When a available work flows request is received from the SDK.
+
+        :param request_workflows: Request available work flows.
+        """
+        logger.info("Received an available workflows request")
+        self.omotes_if.send_available_workflows(self.workflow_manager)
+
     def _cleanup_job(self, job_id: uuid.UUID) -> None:
         """Cleanup any references to job with id `job_id`.
 
@@ -526,7 +551,8 @@ def main() -> None:
                 workflow_type_description_name="Grow Optimizer default workflow",
             ),
             WorkflowType(
-                workflow_type_name="grow_simulator", workflow_type_description_name="Grow Simulator"
+                workflow_type_name="grow_simulator",
+                workflow_type_description_name="Grow Simulator",
             ),
             WorkflowType(
                 workflow_type_name="grow_optimizer_no_heat_losses",
@@ -539,6 +565,31 @@ def main() -> None:
             WorkflowType(
                 workflow_type_name="simulator",
                 workflow_type_description_name="High fidelity simulator",
+                workflow_parameters=[
+                    WorkflowParameter(
+                        key_name="start_time",
+                        schema=ParameterSchema(
+                            type=ParameterType.STRING,
+                            format=ParameterStringFormat.DATETIME,
+                        ),
+                    ),
+                    WorkflowParameter(
+                        key_name="step_size_in_seconds",
+                        schema=ParameterSchema(
+                            type=ParameterType.INTEGER,
+                            default="60",
+                            minimum=0,
+                        ),
+                    ),
+                    WorkflowParameter(
+                        key_name="number_of_steps",
+                        schema=ParameterSchema(
+                            type=ParameterType.INTEGER,
+                            minimum=0,
+                            maximum=1,
+                        ),
+                    ),
+                ],
             ),
             WorkflowType(
                 workflow_type_name="test_worker",