diff --git a/packages/cosmic-swingset/lib/ag-solo/html/wallet-bridge.html b/packages/cosmic-swingset/lib/ag-solo/html/wallet-bridge.html
index 76754de35a2..27adb5e9133 100644
--- a/packages/cosmic-swingset/lib/ag-solo/html/wallet-bridge.html
+++ b/packages/cosmic-swingset/lib/ag-solo/html/wallet-bridge.html
@@ -41,6 +41,9 @@
         }
       });
 
+      // Get the dapp's suggested petname, if there is one.
+      const sp = new URLSearchParams(location.search);
+      let suggestedDappPetname = sp.get('suggestedDappPetname');
 
       window.addEventListener('message', ev => {
         // console.log('inbound', ev.data);
@@ -50,6 +53,8 @@
         if (origin === undefined) {
           // First-come, first-serve.
           origin = ev.origin;
+          // Default the petname, if there isn't a better one.
+          suggestedDappPetname = suggestedDappPetname || origin;
           while (dappQueue.length) {
             const dappObj = dappQueue.shift();
             if (window.parent !== window) {
@@ -58,7 +63,11 @@
           }
         }
         // console.debug('from dapp', origin, ev.data);
-        const obj = { ...ev.data, dappOrigin: origin };
+        const obj = {
+          ...ev.data,
+          dappOrigin: origin,
+          suggestedDappPetname,
+        };
         if (ws.readyState !== ws.OPEN) {
           // console.log('queuing', obj);
           wsQueue.push(obj);
diff --git a/packages/cosmic-swingset/lib/ag-solo/vats/repl.js b/packages/cosmic-swingset/lib/ag-solo/vats/repl.js
index 234eceacd54..52e42615b83 100644
--- a/packages/cosmic-swingset/lib/ag-solo/vats/repl.js
+++ b/packages/cosmic-swingset/lib/ag-solo/vats/repl.js
@@ -14,7 +14,7 @@ export function stringify(
   depth = 0,
 ) {
   if (Object(value) !== value) {
-    return JSON.stringify(value, spaces);
+    return JSON.stringify(value, null, spaces);
   }
 
   // Identify functions.