diff --git a/src/components/ExternalToolEditor.tsx b/src/components/ExternalToolEditor.tsx
index 73d771b..851ddd6 100644
--- a/src/components/ExternalToolEditor.tsx
+++ b/src/components/ExternalToolEditor.tsx
@@ -37,11 +37,11 @@ function parseJsonObject(value: string | undefined, fieldName: string, optional
   }
 
   try {
-    // 优先尝试标准 JSON 解析
+    // 1. 优先尝试标准 JSON 解析
     return JSON.parse(trimmedValue);
   } catch (e) {
     try {
-      // 失败后尝试作为 JS 对象解析 (支持无引号、单引号等)
+      // 2. 失败后尝试作为 JS 对象解析 (支持无引号键、单引号等)
       // eslint-disable-next-line no-new-func
       const parsed = new Function(`return (${trimmedValue})`)();
       if (parsed && typeof parsed === 'object' && !Array.isArray(parsed)) {
@@ -49,6 +49,35 @@ function parseJsonObject(value: string | undefined, fieldName: string, optional
       }
       throw new Error();
     } catch (e2) {
+      // 3. 尝试宽松解析 (处理类似 { Content-Type: application/json } 这种完全无引号的情况)
+      try {
+        const content = trimmedValue.replace(/^\{/, '').replace(/\}$/, '').trim();
+        const result: Record<string, any> = {};
+        const pairs = content.split(/[\n,]/);
+        let hasValidPair = false;
+
+        for (let pair of pairs) {
+          pair = pair.trim();
+          if (!pair) continue;
+          const colonIndex = pair.indexOf(':');
+          if (colonIndex > 0) {
+            const k = pair.substring(0, colonIndex).trim().replace(/^['"]|['"]$/g, '');
+            const v = pair.substring(colonIndex + 1).trim().replace(/^['"]|['"]$/g, '');
+            if (k) {
+              let finalVal: any = v;
+              if (v === 'true') finalVal = true;
+              else if (v === 'false') finalVal = false;
+              else if (v === 'null') finalVal = null;
+              else if (!isNaN(Number(v)) && v !== '') finalVal = Number(v);
+              result[k] = finalVal;
+              hasValidPair = true;
+            }
+          }
+        }
+        if (hasValidPair) return result;
+      } catch (e3) {
+        // ignore and fall through to error
+      }
       throw new Error(`${fieldName}格式不正确，请确保是有效的 JSON 或对象格式`);
     }
   }