diff --git a/par-core/src/main/java/com/par/core/adapter/GroovyScriptEngine.java b/par-core/src/main/java/com/par/core/adapter/GroovyScriptEngine.java
index 04a494b..aa8e90b 100644
--- a/par-core/src/main/java/com/par/core/adapter/GroovyScriptEngine.java
+++ b/par-core/src/main/java/com/par/core/adapter/GroovyScriptEngine.java
@@ -300,5 +300,11 @@ public class GroovyScriptEngine {
         public long parseHtmlSize(String s) {
             return parseTraffic(s);
         }
+        /** 字符串转 double，失败返回 0 */
+        public double toDouble(String s) {
+            if (s == null || s.isBlank()) return 0;
+            try { return Double.parseDouble(s.replace(",", "")); }
+            catch (NumberFormatException e) { return 0; }
+        }
     }
 }
diff --git a/par-core/src/main/java/com/par/core/adapter/PluginContext.java b/par-core/src/main/java/com/par/core/adapter/PluginContext.java
index 4ab1ef1..7301728 100644
--- a/par-core/src/main/java/com/par/core/adapter/PluginContext.java
+++ b/par-core/src/main/java/com/par/core/adapter/PluginContext.java
@@ -1,16 +1,23 @@
 package com.par.core.adapter;
 
+import java.util.Map;
+
 /**
  * PluginContext 桩类，仅供 Groovy 脚本编译通过。
  * PAR 只调用脚本中的 parse() 方法，不会使用此类。
  */
 @SuppressWarnings("unused")
 public class PluginContext {
-    public Site site;
+    public Object site;
     public Object httpClient;
+    public String siteUrl;
+    public String url;
+    public String auth;
+    public String authType;
+    public String body;
+    public Map<String, Object> params;
+    public boolean incomplete;
 
-    public static class Site {
-        public String authorization;
-        public String siteUrl;
-    }
+    public String fetch() { return ""; }
+    public String post() { return ""; }
 }