diff --git a/src/java/com/threerings/presents/peer/client/PeerService.java b/src/java/com/threerings/presents/peer/client/PeerService.java
index 62ef397a1..a769532df 100644
--- a/src/java/com/threerings/presents/peer/client/PeerService.java
+++ b/src/java/com/threerings/presents/peer/client/PeerService.java
@@ -42,7 +42,12 @@ public interface PeerService extends InvocationService
     void invokeAction (Client client, byte[] serializedAction);
 
     /**
-     * Generates a server status report for this peer and returns it to the supplied listener.
+     * Generates a server status report for this peer and returns it to the supplied listener. The
+     * result must be a string.
+     *
+     * @param type the default implementation always generates a state of the server report, but
+     * derived classes can request different report types from their peers to take advantage of
+     * this convenient mechanism for collecting per-peer data.
      */
-    void generateReport (Client client, ResultListener listener);
+    void generateReport (Client client, String type, ResultListener listener);
 }
diff --git a/src/java/com/threerings/presents/peer/data/PeerMarshaller.java b/src/java/com/threerings/presents/peer/data/PeerMarshaller.java
index 28d81ab18..26400b228 100644
--- a/src/java/com/threerings/presents/peer/data/PeerMarshaller.java
+++ b/src/java/com/threerings/presents/peer/data/PeerMarshaller.java
@@ -40,12 +40,12 @@ public class PeerMarshaller extends InvocationMarshaller
     public static final int GENERATE_REPORT = 1;
 
     // from interface PeerService
-    public void generateReport (Client arg1, InvocationService.ResultListener arg2)
+    public void generateReport (Client arg1, String arg2, InvocationService.ResultListener arg3)
     {
-        InvocationMarshaller.ResultMarshaller listener2 = new InvocationMarshaller.ResultMarshaller();
-        listener2.listener = arg2;
+        InvocationMarshaller.ResultMarshaller listener3 = new InvocationMarshaller.ResultMarshaller();
+        listener3.listener = arg3;
         sendRequest(arg1, GENERATE_REPORT, new Object[] {
-            listener2
+            arg2, listener3
         });
     }
 
diff --git a/src/java/com/threerings/presents/peer/server/PeerDispatcher.java b/src/java/com/threerings/presents/peer/server/PeerDispatcher.java
index 782bdd252..cb89ab246 100644
--- a/src/java/com/threerings/presents/peer/server/PeerDispatcher.java
+++ b/src/java/com/threerings/presents/peer/server/PeerDispatcher.java
@@ -56,7 +56,7 @@ public class PeerDispatcher extends InvocationDispatcher<PeerMarshaller>
         switch (methodId) {
         case PeerMarshaller.GENERATE_REPORT:
             ((PeerProvider)provider).generateReport(
-                source, (InvocationService.ResultListener)args[0]
+                source, (String)args[0], (InvocationService.ResultListener)args[1]
             );
             return;
 
diff --git a/src/java/com/threerings/presents/peer/server/PeerManager.java b/src/java/com/threerings/presents/peer/server/PeerManager.java
index 930331ed9..82e496a9c 100644
--- a/src/java/com/threerings/presents/peer/server/PeerManager.java
+++ b/src/java/com/threerings/presents/peer/server/PeerManager.java
@@ -761,7 +761,8 @@ public abstract class PeerManager
     }
 
     // from interface PeerProvider
-    public void generateReport (ClientObject caller, PeerService.ResultListener listener)
+    public void generateReport (ClientObject caller, String type,
+                                PeerService.ResultListener listener)
         throws InvocationException
     {
         listener.requestProcessed(_repmgr.generateReport());
diff --git a/src/java/com/threerings/presents/peer/server/PeerProvider.java b/src/java/com/threerings/presents/peer/server/PeerProvider.java
index df4cd0035..886310bfd 100644
--- a/src/java/com/threerings/presents/peer/server/PeerProvider.java
+++ b/src/java/com/threerings/presents/peer/server/PeerProvider.java
@@ -36,7 +36,7 @@ public interface PeerProvider extends InvocationProvider
     /**
      * Handles a {@link PeerService#generateReport} request.
      */
-    void generateReport (ClientObject caller, InvocationService.ResultListener arg1)
+    void generateReport (ClientObject caller, String arg1, InvocationService.ResultListener arg2)
         throws InvocationException;
 
     /**