diff --git a/wsdef/src/main/java/com/google/gson/webservice/definition/HeaderMap.java b/wsdef/src/main/java/com/google/gson/webservice/definition/HeaderMap.java
index f8294492..f8b983a5 100644
--- a/wsdef/src/main/java/com/google/gson/webservice/definition/HeaderMap.java
+++ b/wsdef/src/main/java/com/google/gson/webservice/definition/HeaderMap.java
@@ -30,6 +30,10 @@ public final class HeaderMap extends ParamMap {
     public Builder(HeaderMapSpec spec) {
       super(spec);
     }
+
+    public <T> Builder put(TypedKey<T> paramKey, T content) {
+      return put(paramKey.getName(), content);
+    }
     
     @Override
     public Builder put(String paramName, Object content) {
diff --git a/wsdef/src/main/java/com/google/gson/webservice/definition/ParamMap.java b/wsdef/src/main/java/com/google/gson/webservice/definition/ParamMap.java
index d4b0c2fe..459d302f 100644
--- a/wsdef/src/main/java/com/google/gson/webservice/definition/ParamMap.java
+++ b/wsdef/src/main/java/com/google/gson/webservice/definition/ParamMap.java
@@ -63,6 +63,10 @@ class ParamMap {
     return contents.get(paramName);
   }
 
+  public <T> T get(TypedKey<T> key) {
+    return get(key.getName(), key.getClassOfT());
+  }
+
   @SuppressWarnings("unchecked")
   public <T> T get(String key, Type typeOfValue) {
     Preconditions.checkArgument(spec.checkIfCompatible(key, typeOfValue));
diff --git a/wsdef/src/main/java/com/google/gson/webservice/definition/TypedKey.java b/wsdef/src/main/java/com/google/gson/webservice/definition/TypedKey.java
new file mode 100644
index 00000000..1f61acc5
--- /dev/null
+++ b/wsdef/src/main/java/com/google/gson/webservice/definition/TypedKey.java
@@ -0,0 +1,19 @@
+package com.google.gson.webservice.definition;
+
+public class TypedKey<T> {
+  private final String name;
+  private final Class<T> classOfT;
+
+  public TypedKey(String name, Class<T> classOfT) {
+    this.name = name;
+    this.classOfT = classOfT;
+  }
+
+  public String getName() {
+    return name;
+  }
+
+  public Class<T> getClassOfT() {
+    return classOfT;
+  }
+}
diff --git a/wsdef/src/main/java/com/google/gson/webservice/definition/WebServiceCallSpec.java b/wsdef/src/main/java/com/google/gson/webservice/definition/WebServiceCallSpec.java
index bbfd5b31..2e886c21 100644
--- a/wsdef/src/main/java/com/google/gson/webservice/definition/WebServiceCallSpec.java
+++ b/wsdef/src/main/java/com/google/gson/webservice/definition/WebServiceCallSpec.java
@@ -55,18 +55,37 @@ public final class WebServiceCallSpec {
       return this;
     }
     
+    public <T> Builder addRequestParam(TypedKey<T> paramKey, Class<T> typeOfParam) {
+      return addRequestParam(paramKey.getName(), typeOfParam);
+    }
+
     public Builder addRequestParam(String paramName, Type type) {
       reqParamsSpecBuilder.put(paramName, type);
       return this;
     }
+
+    public <T> Builder addRequestBodyParam(TypedKey<T> paramKey, Class<T> typeOfParam) {
+      return addRequestBodyParam(paramKey.getName(), typeOfParam);
+    }
+
     public Builder addRequestBodyParam(String paramName, Type type) {
       reqBodySpecBuilder.add(paramName, type);
       return this;
     }
+
+    public <T> Builder addResponseParam(TypedKey<T> paramKey, Class<T> typeOfParam) {
+      return addResponseParam(paramKey.getName(), typeOfParam);
+    }
+
     public Builder addResponseParam(String paramName, Type type) {
       resParamsSpecBuilder.put(paramName, type);
       return this;
     }
+
+    public <T> Builder addResponseBodyParam(TypedKey<T> paramKey, Class<T> typeOfParam) {
+      return addResponseBodyParam(paramKey.getName(), typeOfParam);
+    }
+
     public Builder addResponseBodyParam(String paramName, Type type) {
       resBodySpecBuilder.add(paramName, type);
       return this;