diff --git a/mateclaw-server/src/main/java/vip/mate/i18n/I18nService.java b/mateclaw-server/src/main/java/vip/mate/i18n/I18nService.java
index b9231d06..6aa2185a 100644
--- a/mateclaw-server/src/main/java/vip/mate/i18n/I18nService.java
+++ b/mateclaw-server/src/main/java/vip/mate/i18n/I18nService.java
@@ -45,6 +45,28 @@ public class I18nService {
         }
     }
 
+    /**
+     * Resolve a message key that is expected to be optionally absent — e.g. an
+     * override that legitimately does not exist for every subject (a tool may
+     * ship its description in code rather than in the message bundle).
+     * <p>
+     * Unlike {@link #msg(String, Object...)}, a missing key returns {@code null}
+     * and is NOT logged: the caller treats absence as "use the built-in default",
+     * which is normal operation rather than a misconfiguration worth a log line.
+     *
+     * @param key  消息键
+     * @param args 占位符参数
+     * @return 解析后的消息文本，找不到 key 时返回 {@code null}
+     */
+    public String msgOptional(String key, Object... args) {
+        Locale locale = resolveLocale();
+        try {
+            return messageSource.getMessage(key, args, locale);
+        } catch (Exception e) {
+            return null;
+        }
+    }
+
     /**
      * Clear the cached Locale. Call after a language switch so that the next
      * {@link #msg(String, Object...)} call re-reads {@code SystemSettingService.getLanguage()}.
diff --git a/mateclaw-server/src/main/java/vip/mate/tool/ToolRegistry.java b/mateclaw-server/src/main/java/vip/mate/tool/ToolRegistry.java
index 8a736fe1..79c89fc8 100644
--- a/mateclaw-server/src/main/java/vip/mate/tool/ToolRegistry.java
+++ b/mateclaw-server/src/main/java/vip/mate/tool/ToolRegistry.java
@@ -152,9 +152,12 @@ public class ToolRegistry {
             for (ToolCallback cb : cbs) {
                 String toolName = cb.getToolDefinition().name();
                 String descKey = "tool." + toolName + ".desc";
-                String localizedDesc = i18nService.msg(descKey);
-                // 如果 key 被解析（不等于 key 本身），使用本地化描述
-                if (!localizedDesc.equals(descKey)) {
+                // The i18n description is an optional override: tools without a
+                // bundle entry (e.g. wiki tools) keep the description declared on
+                // their @Tool annotation. Use msgOptional so an absent key is not
+                // logged as a "missing key" — that is expected, not a fault.
+                String localizedDesc = i18nService.msgOptional(descKey);
+                if (localizedDesc != null) {
                     localizedCallbacks.add(new LocaleAwareToolCallback(cb, localizedDesc));
                 } else {
                     localizedCallbacks.add(cb);