diff --git a/agent.py b/agent.py
index 3070cae..61cf0cd 100644
--- a/agent.py
+++ b/agent.py
@@ -668,7 +668,7 @@ class CustomerIntegrationEngineer(A2AAgent[CustomerIntegrationEngineerConfig, No
             network_calls_made=network_calls,
         )
 
-    @a2a.tool(description="Prepare rollout, rollback, monitoring, and operator handoff documentation with approval-gated delivery planning", timeout_seconds=120, idempotent=True, max_retries=0, cost_class="deterministic", grant_outputs_prefix="outputs", grant_write_prefixes=("outputs/integrations",))
+    @a2a.tool(description="Prepare rollout, rollback, monitoring, and operator handoff documentation with approval-gated delivery planning", input_schema=_HANDOFF_INPUT_SCHEMA, timeout_seconds=120, idempotent=True, max_retries=0, cost_class="deterministic", grant_outputs_prefix="outputs", grant_write_prefixes=("outputs/integrations",))
     async def prepare_handoff(self, ctx: RunContext[NoAuth], request: PrepareHandoffRequest) -> PrepareHandoffResult:
         dry_run = _effective_dry_run(self, request.dry_run)
         audit = [_audit("handoff_started", request.integration_id, {"dry_run": dry_run, "delivery_actions": len(request.delivery_actions)})]