diff --git a/src/main/java/com/pandol365/dewey/api/controller/McpController.java b/src/main/java/com/pandol365/dewey/api/controller/McpController.java
index 9ec22ca..0d222a2 100644
--- a/src/main/java/com/pandol365/dewey/api/controller/McpController.java
+++ b/src/main/java/com/pandol365/dewey/api/controller/McpController.java
@@ -8,6 +8,7 @@ import lombok.extern.slf4j.Slf4j;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
 
+import java.util.HashMap;
 import java.util.Map;
 
 /**
@@ -23,6 +24,33 @@ public class McpController {
     
     private final McpService mcpService;
     
+    /**
+     * 헬스 체크 엔드포인트 (GET 요청 처리)
+     * Cursor나 다른 클라이언트가 서버 상태를 확인하기 위해 사용
+     */
+    @GetMapping(produces = {"application/json", "text/plain", "*/*"})
+    public ResponseEntity<Map<String, Object>> healthCheck() {
+        log.info("헬스 체크 요청 수신");
+        Map<String, Object> response = new HashMap<>();
+        response.put("status", "ok");
+        response.put("service", "Dewey MCP Server");
+        response.put("version", "0.0.1-SNAPSHOT");
+        response.put("protocol", "JSON-RPC 2.0");
+        response.put("endpoint", "/mcp");
+        return ResponseEntity.ok()
+                .header("Content-Type", "application/json")
+                .body(response);
+    }
+    
+    /**
+     * OPTIONS 요청 처리 (CORS preflight)
+     */
+    @RequestMapping(method = RequestMethod.OPTIONS)
+    public ResponseEntity<Void> options() {
+        log.info("OPTIONS 요청 수신 (CORS preflight)");
+        return ResponseEntity.ok().build();
+    }
+    
     /**
      * MCP JSON-RPC 2.0 엔드포인트
      * 모든 MCP 요청을 처리하는 통합 엔드포인트
diff --git a/src/main/java/com/pandol365/dewey/exception/GlobalExceptionHandler.java b/src/main/java/com/pandol365/dewey/exception/GlobalExceptionHandler.java
index d032f0d..007616f 100644
--- a/src/main/java/com/pandol365/dewey/exception/GlobalExceptionHandler.java
+++ b/src/main/java/com/pandol365/dewey/exception/GlobalExceptionHandler.java
@@ -4,7 +4,10 @@ import com.pandol365.dewey.api.dto.response.McpJsonRpcResponse;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
+import org.springframework.http.converter.HttpMessageNotReadableException;
 import org.springframework.validation.FieldError;
+import org.springframework.web.HttpMediaTypeNotAcceptableException;
+import org.springframework.web.HttpRequestMethodNotSupportedException;
 import org.springframework.web.bind.MethodArgumentNotValidException;
 import org.springframework.web.bind.annotation.ExceptionHandler;
 import org.springframework.web.bind.annotation.RestControllerAdvice;
@@ -19,6 +22,72 @@ import java.util.Map;
 @RestControllerAdvice
 public class GlobalExceptionHandler {
     
+    /**
+     * HTTP 메서드가 지원되지 않는 경우 처리
+     */
+    @ExceptionHandler(HttpRequestMethodNotSupportedException.class)
+    public ResponseEntity<Map<String, Object>> handleMethodNotSupported(
+            HttpRequestMethodNotSupportedException ex) {
+        log.warn("지원되지 않는 HTTP 메서드: {}", ex.getMethod());
+        
+        Map<String, Object> response = new HashMap<>();
+        response.put("error", "Method not allowed");
+        response.put("message", ex.getMessage());
+        if (ex.getSupportedMethods() != null) {
+            response.put("supportedMethods", ex.getSupportedMethods());
+        }
+        
+        return ResponseEntity.status(HttpStatus.METHOD_NOT_ALLOWED).body(response);
+    }
+    
+    /**
+     * JSON 파싱 오류 처리
+     */
+    @ExceptionHandler(HttpMessageNotReadableException.class)
+    public ResponseEntity<McpJsonRpcResponse> handleJsonParseException(
+            HttpMessageNotReadableException ex) {
+        log.warn("JSON 파싱 오류: {}", ex.getMessage());
+        
+        // 원인 예외 메시지 추출
+        String errorMessage = "Invalid JSON format";
+        if (ex.getCause() != null) {
+            errorMessage = ex.getCause().getMessage();
+        }
+        
+        McpJsonRpcResponse.McpError error = McpJsonRpcResponse.McpError.builder()
+                .code(-32700) // Parse error
+                .message(errorMessage)
+                .data(null)
+                .build();
+        
+        McpJsonRpcResponse response = McpJsonRpcResponse.builder()
+                .jsonrpc("2.0")
+                .error(error)
+                .build();
+        
+        return ResponseEntity.badRequest().body(response);
+    }
+    
+    /**
+     * 미디어 타입이 허용되지 않는 경우 처리
+     */
+    @ExceptionHandler(HttpMediaTypeNotAcceptableException.class)
+    public ResponseEntity<Map<String, Object>> handleMediaTypeNotAcceptable(
+            HttpMediaTypeNotAcceptableException ex) {
+        log.warn("허용되지 않는 미디어 타입: {}", ex.getMessage());
+        
+        Map<String, Object> response = new HashMap<>();
+        response.put("status", "ok");
+        response.put("service", "Dewey MCP Server");
+        response.put("version", "0.0.1-SNAPSHOT");
+        response.put("protocol", "JSON-RPC 2.0");
+        response.put("endpoint", "/mcp");
+        
+        return ResponseEntity.ok()
+                .header("Content-Type", "application/json")
+                .body(response);
+    }
+    
     /**
      * 유효성 검증 예외 처리
      */
diff --git a/test_mcp.json b/test_mcp.json
new file mode 100644
index 0000000..34ca7af
--- /dev/null
+++ b/test_mcp.json
@@ -0,0 +1,14 @@
+{
+  "jsonrpc": "2.0",
+  "id": "1",
+  "method": "initialize",
+  "params": {
+    "protocolVersion": "2024-11-05",
+    "capabilities": {},
+    "clientInfo": {
+      "name": "test-client",
+      "version": "1.0.0"
+    }
+  }
+}
+
diff --git a/test_store_memory.json b/test_store_memory.json
new file mode 100644
index 0000000..9d9a00f
--- /dev/null
+++ b/test_store_memory.json
@@ -0,0 +1,16 @@
+{
+  "jsonrpc": "2.0",
+  "id": "3",
+  "method": "tools/call",
+  "params": {
+    "arguments": {
+      "name": "store_memory",
+      "arguments": {
+        "user_id": "test_user",
+        "memory_text": "테스트 메모리입니다",
+        "importance": 3
+      }
+    }
+  }
+}
+
diff --git a/test_tools_list.json b/test_tools_list.json
new file mode 100644
index 0000000..ac2359b
--- /dev/null
+++ b/test_tools_list.json
@@ -0,0 +1,6 @@
+{
+  "jsonrpc": "2.0",
+  "id": "2",
+  "method": "tools/list"
+}
+