diff --git a/span-processing-config-service-api/src/main/proto/org/hypertrace/span/processing/config/service/v1/span_processing_config_service.proto b/span-processing-config-service-api/src/main/proto/org/hypertrace/span/processing/config/service/v1/span_processing_config_service.proto
index d40da4ab..84cc270e 100644
--- a/span-processing-config-service-api/src/main/proto/org/hypertrace/span/processing/config/service/v1/span_processing_config_service.proto
+++ b/span-processing-config-service-api/src/main/proto/org/hypertrace/span/processing/config/service/v1/span_processing_config_service.proto
@@ -66,8 +66,23 @@ message ExcludeSpanRuleInfo {
   SpanFilter filter = 2;
   bool disabled = 3;
   RuleType type = 4;
+  repeated EvaluationTarget evaluation_targets = 5;
 }
 
+message EvaluationTarget {
+  oneof target {
+    Platform platform = 1;
+    PlatformAgent platform_agent = 2;
+    TracingAgent tracing_agent = 3;
+  }
+}
+
+message Platform {}
+
+message PlatformAgent {}
+
+message TracingAgent {}
+
 message ExcludeSpanRuleMetadata {
   google.protobuf.Timestamp creation_timestamp = 1;
   google.protobuf.Timestamp last_updated_timestamp = 2;