diff --git a/control_plane/resources/management/commands/sol_plan_smoke.py b/control_plane/resources/management/commands/sol_plan_smoke.py
index e227efc..d432e00 100644
--- a/control_plane/resources/management/commands/sol_plan_smoke.py
+++ b/control_plane/resources/management/commands/sol_plan_smoke.py
@@ -19,8 +19,12 @@ class Command(BaseCommand):
         if resource is None:
             raise CommandError("No Sol/opencode resource configured. Run seed_spark_resources first.")
         prompt = (
-            "Return only JSON with a project_plan object. Include goal, scope, acceptance_criteria, "
-            "milestones, features, tasks with id, goal, acceptance_criteria, dependencies. Goal: "
+            "Return only valid JSON. No markdown. No commentary. The JSON must match this exact shape: "
+            "{\"project_plan\":{\"goal\":str,\"scope\":str,\"acceptance_criteria\":[str],"
+            "\"milestones\":[{\"key\":str,\"title\":str,\"goal\":str,\"features\":[{"
+            "\"key\":str,\"title\":str,\"description\":str,\"acceptance_criteria\":[str],"
+            "\"tasks\":[{\"id\":str,\"goal\":str,\"acceptance_criteria\":[str],"
+            "\"dependencies\":[str]}]}]}]}}. Include at least one milestone, one feature, and one task. Goal: "
             + options["goal"]
         )
         response = SolProvider(resource).complete(ModelRequestContract(purpose="PLANNING", prompt=prompt, token_budget=4000))