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..b9a5566b 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
@@ -54,6 +54,7 @@ message DeleteExcludeSpanRuleResponse {
 message ExcludeSpanRule {
   string id = 1;
   ExcludeSpanRuleInfo rule_info = 2;
+  repeated EvaluationTarget evaluation_targets = 3;
 }
 
 message ExcludeSpanRuleDetails {
@@ -68,6 +69,20 @@ message ExcludeSpanRuleInfo {
   RuleType type = 4;
 }
 
+message EvaluationTarget {
+  oneof target {
+    Platform platform = 1;
+    Agent agent = 2;
+    AgentModule agent_module = 3;
+  }
+}
+
+message Platform {}
+
+message Agent {}
+
+message AgentModule {}
+
 message ExcludeSpanRuleMetadata {
   google.protobuf.Timestamp creation_timestamp = 1;
   google.protobuf.Timestamp last_updated_timestamp = 2;