diff --git a/axhub-gateway/src/main/java/io/shinhanlife/axhub/biz/mcp/gateway/presentation/McpRouterController.java b/axhub-gateway/src/main/java/io/shinhanlife/axhub/biz/mcp/gateway/presentation/McpRouterController.java
index 7a2b52a..35e62a3 100644
--- a/axhub-gateway/src/main/java/io/shinhanlife/axhub/biz/mcp/gateway/presentation/McpRouterController.java
+++ b/axhub-gateway/src/main/java/io/shinhanlife/axhub/biz/mcp/gateway/presentation/McpRouterController.java
@@ -50,7 +50,13 @@ public class McpRouterController {
         this.securityProperties = securityProperties;
         this.objectMapper = objectMapper;
         this.gatewayFallbackProperties = gatewayFallbackProperties;
-        this.restClient = RestClient.create();
+        
+        // [수정됨] 1초 타임아웃을 강제하여 죽은 서버 대기로 인한 지연 방지
+        org.springframework.http.client.SimpleClientHttpRequestFactory factory = new org.springframework.http.client.SimpleClientHttpRequestFactory();
+        factory.setConnectTimeout(1000); // 연결 시도 타임아웃 1초
+        factory.setReadTimeout(1000);    // 응답 대기 타임아웃 1초
+        
+        this.restClient = RestClient.builder().requestFactory(factory).build();
     }
 
     @Operation(summary = "MCP 파이프라인 호출", description = "MCP 표준 파이프라인(ExecuteService)을 통해 레거시 툴을 호출합니다.")
diff --git a/axhub-tool-core/src/main/java/io/shinhanlife/axhub/biz/mcp/tool/service/AbstractMcpToolService.java b/axhub-tool-core/src/main/java/io/shinhanlife/axhub/biz/mcp/tool/service/AbstractMcpToolService.java
index 7f49e84..64d4a56 100644
--- a/axhub-tool-core/src/main/java/io/shinhanlife/axhub/biz/mcp/tool/service/AbstractMcpToolService.java
+++ b/axhub-tool-core/src/main/java/io/shinhanlife/axhub/biz/mcp/tool/service/AbstractMcpToolService.java
@@ -34,10 +34,14 @@ public abstract class AbstractMcpToolService {
     @Autowired
     protected ObjectMapper objectMapper;
 
-    /**
-     * 레거시 시스템을 호출하고 공통 처리(PII 마스킹 등)를 수행합니다.
-     */
     protected Map<String, Object> executeLegacy(String routingType, String interfaceId, Object inputData) {
+        return executeLegacy(routingType, interfaceId, inputData, null);
+    }
+
+    /**
+     * 레거시 시스템을 호출하고 공통 처리(PII 마스킹 등)를 수행합니다. (스펙 지정 가능)
+     */
+    protected Map<String, Object> executeLegacy(String routingType, String interfaceId, Object inputData, java.util.List<Map<String, Object>> spec) {
         Map<String, Object> inputMap;
         if (inputData == null) {
             inputMap = new HashMap<>();
@@ -58,7 +62,7 @@ public abstract class AbstractMcpToolService {
             log.info("=======================================================\n");
 
             // 1. Adapter 공통 모듈 직접 호출
-            String executionResult = legacyEimsConnector.executeByTool(routingType, interfaceId, inputMap, null);
+            String executionResult = legacyEimsConnector.executeByTool(routingType, interfaceId, inputMap, spec);
 
             log.info("\n=======================================================");
             log.info(" [Legacy -> Tool] 레거시 시스템 통신 완료");
diff --git a/axhub-tool-other/src/main/java/io/shinhanlife/axhub/biz/mcp/tool/service/SampleStringToolService.java b/axhub-tool-other/src/main/java/io/shinhanlife/axhub/biz/mcp/tool/service/SampleStringToolService.java
index b577af6..d3c3fba 100644
--- a/axhub-tool-other/src/main/java/io/shinhanlife/axhub/biz/mcp/tool/service/SampleStringToolService.java
+++ b/axhub-tool-other/src/main/java/io/shinhanlife/axhub/biz/mcp/tool/service/SampleStringToolService.java
@@ -24,7 +24,7 @@ import java.util.Map;
  */
 @Service
 @McpTool(
-    routingType = "MCI_STRING",
+    routingType = "MCI",
     categoryKey = "common"
 )
 public class SampleStringToolService extends AbstractMcpToolService {
@@ -36,7 +36,11 @@ public class SampleStringToolService extends AbstractMcpToolService {
     )
     public Object execute(SampleStringReq req) {
         // 1. EIMS(Legacy)를 통해 원본 고정 길이 문자열을 받아옵니다.
-        Map<String, Object> result = executeLegacy("MCI_STRING", "TRGM_001", req);
+        // 스펙에 mciFormat = STRING 힌트를 주어 전문 통신으로 자동 분기되게 합니다.
+        java.util.List<Map<String, Object>> spec = java.util.List.of(
+            Map.of("mciFormat", "STRING")
+        );
+        Map<String, Object> result = executeLegacy("MCI", "TRGM_001", req, spec);
         
         if (!"SUCCESS".equals(result.get("status"))) {
             return result;