diff --git a/dap-tool-core/src/main/java/io/shinhanlife/dap/lib/util/ToolScaffolder.java b/dap-tool-core/src/main/java/io/shinhanlife/dap/lib/util/ToolScaffolder.java
index eb434300..7ac0ebd4 100644
--- a/dap-tool-core/src/main/java/io/shinhanlife/dap/lib/util/ToolScaffolder.java
+++ b/dap-tool-core/src/main/java/io/shinhanlife/dap/lib/util/ToolScaffolder.java
@@ -130,6 +130,7 @@ public class ToolScaffolder {
 
             import com.fasterxml.jackson.annotation.JsonInclude;
             import io.shinhanlife.dap.lib.annotation.McpParameter;
+            import io.shinhanlife.dap.lib.annotation.McpValidation;
             import lombok.Data;
 
             /**
@@ -150,9 +151,11 @@ public class ToolScaffolder {
             @JsonInclude(JsonInclude.Include.NON_NULL)
             public class %sRequest {
                 @McpParameter(description = "수신자 전화번호", required = true)
+                @McpValidation(pattern = "^01(?:0|1|[6-9])-(?:\\\\d{3}|\\\\d{4})-\\\\d{4}$", examples = {"010-1234-5678"})
                 private String phoneNumber;
 
                 @McpParameter(description = "전송할 메시지 내용", required = true)
+                @McpValidation(defaultValue = "안녕하세요.")
                 private String message;
             }
             """.formatted(bizPackage, bizPackage, baseName, author, createDate, createDate, author, baseName);