diff --git a/proto/viam/robot/v1/robot.proto b/proto/viam/robot/v1/robot.proto
index 8104544a..7a268a3b 100644
--- a/proto/viam/robot/v1/robot.proto
+++ b/proto/viam/robot/v1/robot.proto
@@ -389,11 +389,13 @@ message ResourceStatus {
     STATE_UNCONFIGURED = 1;
     // a resource that is being configured.
     STATE_CONFIGURING = 2;
-    // a resource that has been successfully configured once and is not being
+    // a resource that has been successfully configured once, is healthy, and is not being
     // re-configured or removed.
     STATE_READY = 3;
     // a resource that is being removed from the robot.
     STATE_REMOVING = 4;
+    // a resource that is in an unheathy state.
+    STATE_UNHEALTHY = 5;
   }
 
   // resource name.
@@ -407,6 +409,9 @@ message ResourceStatus {
 
   // revision of the last config that successfully updated this resource.
   string revision = 4;
+
+  // error details for resources that are in an unhealthy state.
+  string error = 5;
 }
 
 message ConfigStatus {