diff --git a/apps/extension/src/listeners/tabs-updated-prax-init.ts b/apps/extension/src/listeners/tabs-updated-prax-init.ts
index 1307381c..fb20d842 100644
--- a/apps/extension/src/listeners/tabs-updated-prax-init.ts
+++ b/apps/extension/src/listeners/tabs-updated-prax-init.ts
@@ -3,15 +3,23 @@ import { PraxConnection } from '../message/prax';
 
 // trigger injected-connection-port to init when a known page is loaded.
 chrome.tabs.onUpdated.addListener(
-  (tabId, { status, discarded }, { url }) =>
+  (tabId, { status, discarded, url: changeInfoUrl }, { url: tabUrl }) => {
+    console.log({ tabUrl, changeInfoUrl });
+    const url = changeInfoUrl ?? tabUrl;
+    const documentUrls = [tabUrl, changeInfoUrl].filter(id => id) as string[];
+    const getContext = chrome.runtime
+      .getContexts({ tabIds: [tabId], documentUrls })
+      .then(contexts => contexts.filter(({ frameId }) => !frameId)[0]);
     void (async () => {
+      const documentId = (await getContext)?.documentId;
       if (
+        documentId &&
         status === 'complete' &&
         !discarded &&
         url?.startsWith('https://') &&
         (await originAlreadyApproved(url))
       )
-        // How can we scope this to documentId?
-        void chrome.tabs.sendMessage(tabId, PraxConnection.Init);
-    })(),
+        void chrome.runtime.sendMessage(PraxConnection.Init, { tabId, documentId });
+    })();
+  },
 );