diff --git a/axhub-tool-core/src/main/java/io/shinhanlife/axhub/biz/mcp/sample/converter/SampleMciConverter.java b/axhub-tool-core/src/main/java/io/shinhanlife/axhub/biz/mcp/sample/converter/SampleLegacyConverter.java
similarity index 74%
rename from axhub-tool-core/src/main/java/io/shinhanlife/axhub/biz/mcp/sample/converter/SampleMciConverter.java
rename to axhub-tool-core/src/main/java/io/shinhanlife/axhub/biz/mcp/sample/converter/SampleLegacyConverter.java
index 1eef078..3ac7c38 100644
--- a/axhub-tool-core/src/main/java/io/shinhanlife/axhub/biz/mcp/sample/converter/SampleMciConverter.java
+++ b/axhub-tool-core/src/main/java/io/shinhanlife/axhub/biz/mcp/sample/converter/SampleLegacyConverter.java
@@ -1,16 +1,16 @@
 package io.shinhanlife.axhub.biz.mcp.sample.converter;
 
 import io.shinhanlife.axhub.biz.mcp.sample.dto.SampleAiReqDto;
-import io.shinhanlife.axhub.biz.mcp.sample.dto.SampleMciReqDto;
+import io.shinhanlife.axhub.biz.mcp.sample.dto.SampleLegacyReqDto;
 import org.mapstruct.Mapper;
 import org.mapstruct.Mapping;
 import org.mapstruct.factory.Mappers;
 
 @Mapper(componentModel = "spring")
-public interface SampleMciConverter {
+public interface SampleLegacyConverter {
 
     // 테스트 환경 등에서 Spring Bean 주입 없이 직접 접근하기 위한 INSTANCE 제공 (IDE 에러 방지용)
-    SampleMciConverter INSTANCE = Mappers.getMapper(SampleMciConverter.class);
+    SampleLegacyConverter INSTANCE = Mappers.getMapper(SampleLegacyConverter.class);
 
     /**
      * AI Agent의 DTO를 MCI 통신용 DTO로 변환합니다.
@@ -19,5 +19,5 @@ public interface SampleMciConverter {
     @Mapping(source = "userId", target = "customerId")
     @Mapping(source = "actionType", target = "interfaceId")
     @Mapping(source = "extraInfo", target = "requestDetails")
-    SampleMciReqDto toMciReq(SampleAiReqDto aiReq);
+    SampleLegacyReqDto toLegacyReq(SampleAiReqDto aiReq);
 }
diff --git a/axhub-tool-core/src/main/java/io/shinhanlife/axhub/biz/mcp/sample/dto/SampleMciReqDto.java b/axhub-tool-core/src/main/java/io/shinhanlife/axhub/biz/mcp/sample/dto/SampleLegacyReqDto.java
similarity index 96%
rename from axhub-tool-core/src/main/java/io/shinhanlife/axhub/biz/mcp/sample/dto/SampleMciReqDto.java
rename to axhub-tool-core/src/main/java/io/shinhanlife/axhub/biz/mcp/sample/dto/SampleLegacyReqDto.java
index bb828cf..d281e25 100644
--- a/axhub-tool-core/src/main/java/io/shinhanlife/axhub/biz/mcp/sample/dto/SampleMciReqDto.java
+++ b/axhub-tool-core/src/main/java/io/shinhanlife/axhub/biz/mcp/sample/dto/SampleLegacyReqDto.java
@@ -26,7 +26,7 @@ import lombok.ToString;
 @ToString
 @NoArgsConstructor(access = AccessLevel.PROTECTED)
 @AllArgsConstructor
-public class SampleMciReqDto {
+public class SampleLegacyReqDto {
     
     /**
      * MCI 인터페이스 ID (예: MCI0001)
diff --git a/axhub-tool-core/src/test/java/io/shinhanlife/axhub/biz/mcp/sample/converter/SampleMciConverterTest.java b/axhub-tool-core/src/test/java/io/shinhanlife/axhub/biz/mcp/sample/converter/SampleLegacyConverterTest.java
similarity index 82%
rename from axhub-tool-core/src/test/java/io/shinhanlife/axhub/biz/mcp/sample/converter/SampleMciConverterTest.java
rename to axhub-tool-core/src/test/java/io/shinhanlife/axhub/biz/mcp/sample/converter/SampleLegacyConverterTest.java
index fe5c7d4..84496dc 100644
--- a/axhub-tool-core/src/test/java/io/shinhanlife/axhub/biz/mcp/sample/converter/SampleMciConverterTest.java
+++ b/axhub-tool-core/src/test/java/io/shinhanlife/axhub/biz/mcp/sample/converter/SampleLegacyConverterTest.java
@@ -1,17 +1,17 @@
 package io.shinhanlife.axhub.biz.mcp.sample.converter;
 
 import io.shinhanlife.axhub.biz.mcp.sample.dto.SampleAiReqDto;
-import io.shinhanlife.axhub.biz.mcp.sample.dto.SampleMciReqDto;
+import io.shinhanlife.axhub.biz.mcp.sample.dto.SampleLegacyReqDto;
 import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertNotNull;
 
-public class SampleMciConverterTest {
+public class SampleLegacyConverterTest {
 
     // MapStruct가 자동 생성한 구현체를 가져와서 테스트합니다. (IDE 에러 방지를 위해 INSTANCE 참조)
-    private final SampleMciConverter sampleMciConverter = SampleMciConverter.INSTANCE;
+    private final SampleLegacyConverter sampleLegacyConverter = SampleLegacyConverter.INSTANCE;
 
     @Test
     @DisplayName("AI 파라미터 DTO가 MCI DTO로 정확히 매핑되는지 테스트")
@@ -24,12 +24,12 @@ public class SampleMciConverterTest {
                 .build();
 
         // when: MapStruct 자동 생성 매퍼를 통해 1줄로 변환
-        SampleMciReqDto mciDto = sampleMciConverter.toMciReq(aiDto);
+        SampleLegacyReqDto mciDto = sampleLegacyConverter.toLegacyReq(aiDto);
 
         // then: 콘솔에 결과 출력 및 값 검증
         System.out.println("======  MapStruct 변환 테스트 결과  ======");
         System.out.println(" [변환 전] AI DTO : " + aiDto);
-        System.out.println(" [변환 후] MCI DTO: " + mciDto);
+        System.out.println(" [변환 후] Legacy DTO: " + mciDto);
         System.out.println("===============================================");
 
         assertNotNull(mciDto, "변환된 객체는 null이 아니어야 합니다.");
diff --git a/axhub-tool-sms/src/main/java/io/shinhanlife/axhub/biz/mcp/tool/sms/converter/SmsMciConverter.java b/axhub-tool-sms/src/main/java/io/shinhanlife/axhub/biz/mcp/tool/sms/converter/SmsLegacyConverter.java
similarity index 71%
rename from axhub-tool-sms/src/main/java/io/shinhanlife/axhub/biz/mcp/tool/sms/converter/SmsMciConverter.java
rename to axhub-tool-sms/src/main/java/io/shinhanlife/axhub/biz/mcp/tool/sms/converter/SmsLegacyConverter.java
index 14a9fed..88bea1e 100644
--- a/axhub-tool-sms/src/main/java/io/shinhanlife/axhub/biz/mcp/tool/sms/converter/SmsMciConverter.java
+++ b/axhub-tool-sms/src/main/java/io/shinhanlife/axhub/biz/mcp/tool/sms/converter/SmsLegacyConverter.java
@@ -7,11 +7,11 @@ import org.mapstruct.Mapping;
 import org.mapstruct.factory.Mappers;
 
 @Mapper(componentModel = "spring")
-public interface SmsMciConverter {
+public interface SmsLegacyConverter {
 
-    SmsMciConverter INSTANCE = Mappers.getMapper(SmsMciConverter.class);
+    SmsLegacyConverter INSTANCE = Mappers.getMapper(SmsLegacyConverter.class);
 
     @Mapping(source = "phoneNumber", target = "phone")
     @Mapping(source = "message", target = "content")
-    SmsLegacyReqDto toMciReq(SmsSendReq req);
+    SmsLegacyReqDto toLegacyReq(SmsSendReq req);
 }
diff --git a/axhub-tool-sms/src/main/java/io/shinhanlife/axhub/biz/mcp/tool/sms/service/SmsToolService.java b/axhub-tool-sms/src/main/java/io/shinhanlife/axhub/biz/mcp/tool/sms/service/SmsToolService.java
index d88ae68..4608676 100644
--- a/axhub-tool-sms/src/main/java/io/shinhanlife/axhub/biz/mcp/tool/sms/service/SmsToolService.java
+++ b/axhub-tool-sms/src/main/java/io/shinhanlife/axhub/biz/mcp/tool/sms/service/SmsToolService.java
@@ -4,7 +4,7 @@ import io.shinhanlife.axhub.biz.mcp.tool.annotation.McpFunction;
 import io.shinhanlife.axhub.biz.mcp.tool.annotation.McpTool;
 import io.shinhanlife.axhub.biz.mcp.tool.dto.SmsSendReq;
 import io.shinhanlife.axhub.biz.mcp.tool.service.AbstractMcpToolService;
-import io.shinhanlife.axhub.biz.mcp.tool.sms.converter.SmsMciConverter;
+import io.shinhanlife.axhub.biz.mcp.tool.sms.converter.SmsLegacyConverter;
 import io.shinhanlife.axhub.biz.mcp.tool.sms.dto.SmsLegacyReqDto;
 import lombok.extern.slf4j.Slf4j;
 
@@ -33,10 +33,10 @@ public class SmsToolService extends AbstractMcpToolService {
         log.info("[SMS] SMS 발송 요청 수신. 수신자: {}", req.getPhoneNumber());
 
         // MapStruct를 이용한 자동 매핑 (AI DTO -> MCI DTO)
-        SmsLegacyReqDto mciReq = SmsMciConverter.INSTANCE.toMciReq(req);
+        SmsLegacyReqDto legacyReq = SmsLegacyConverter.INSTANCE.toLegacyReq(req);
 
         // 레거시 시스템 연동 (EAI) - DTO 객체를 그대로 넘김
-        Map<String, Object> result = executeLegacy("EAI", "SMS_SEND_001", mciReq);
+        Map<String, Object> result = executeLegacy("EAI", "SMS_SEND_001", legacyReq);
 
         // 결과 가공
         if ("SUCCESS".equals(result.get("status"))) {