diff --git a/apps/v4/registry/directory.json b/apps/v4/registry/directory.json
index b556a8e8e8..7226594aa9 100644
--- a/apps/v4/registry/directory.json
+++ b/apps/v4/registry/directory.json
@@ -41,6 +41,13 @@
     "description": "A fully animated, open-source React component distribution. Browse a list of animated primitives, components and icons you can install and use in your projects.",
     "logo": "<svg xmlns='http://www.w3.org/2000/svg' role='img' viewBox='0 0 24 24'><path fill='currentColor' d='M17.453 23.09H6.547a6.43 6.43 0 0 1-3.32-.914 6.5 6.5 0 0 1-2.262-2.32 6.406 6.406 0 0 1 .031-6.45L6.45 4.094a6.4 6.4 0 0 1 2.442-2.387 6.47 6.47 0 0 1 6.218 0 6.4 6.4 0 0 1 2.442 2.387l5.453 9.312a6.4 6.4 0 0 1 .031 6.45 6.5 6.5 0 0 1-2.262 2.32 6.43 6.43 0 0 1-3.32.914M11.336 6.953 5.879 16.27a.75.75 0 0 0-.004.773.74.74 0 0 0 .672.387h10.906a.74.74 0 0 0 .672-.387.75.75 0 0 0-.004-.773l-5.457-9.317A.73.73 0 0 0 12 6.57a.73.73 0 0 0-.664.383m0 0'/></svg>"
   },
+  {
+    "name": "@assistant-ui",
+    "homepage": "https://www.assistant-ui.com",
+    "url": "https://r.assistant-ui.com/{name}.json",
+    "description": "Radix-style React primitives for AI chat with adapters for AI SDK, LangGraph, Mastra, and custom backends.",
+    "logo": "<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"32\" height=\"32\" viewBox=\"0 0 32 32\"><rect width=\"32\" height=\"32\" fill=\"var(--foreground)\" /><g transform=\"translate(4,4)\" fill=\"var(--foreground)\" stroke=\"var(--background)\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M14 9a2 2 0 0 1-2 2H6l-4 4V4c0-1.1.9-2 2-2h8a2 2 0 0 1 2 2z\" /><path d=\"M18 9h2a2 2 0 0 1 2 2v11l-4-4h-6a2 2 0 0 1-2-2v-1\" /></g></svg>"
+  },
   {
     "name": "@better-upload",
     "homepage": "https://better-upload.com",