diff --git a/packages/webui/src/chat.mjs b/packages/webui/src/chat.mjs
index 1b0a41dce..311048755 100644
--- a/packages/webui/src/chat.mjs
+++ b/packages/webui/src/chat.mjs
@@ -13,9 +13,10 @@ import { BusReadError } from './bus.mjs';
 export function createChat({ call, owner = null }) {
   if (typeof call !== 'function') throw new TypeError('chat needs a bus transport function');
   if (owner !== null && typeof owner !== 'function') throw new TypeError('chat owner must be a bus transport function');
-  const dispatch = createChannelCaller({ name: 'webui', call: owner === null ? call : (verb, args) => verb === 'plugins' ? owner('plugins', {}) : call(verb, args) });
+  let last = {};
+  const dispatch = createChannelCaller({ name: 'webui', call: owner === null ? call : (verb, args) => verb === 'plugins' ? owner('plugins', last) : call(verb, args) });
   const channel = async (verb, args) => {
-    try { return await dispatch(verb, args); }
+    try { last = args; return await dispatch(verb, args); }
     catch (err) {
       if (err instanceof PluginError) throw new BusReadError(err.code, err.message);
       throw err;