diff --git a/.changeset/deprecate-elements-agent-toolkit-core-2.md b/.changeset/deprecate-elements-agent-toolkit-core-2.md
new file mode 100644
index 00000000000..b06895126aa
--- /dev/null
+++ b/.changeset/deprecate-elements-agent-toolkit-core-2.md
@@ -0,0 +1,6 @@
+---
+'@clerk/elements': patch
+'@clerk/agent-toolkit': patch
+---
+
+Publish `@clerk/elements` and `@clerk/agent-toolkit` as deprecated on npm. Both are no longer supported; `@clerk/elements` was dropped in [Core 3](https://clerk.com/changelog/2026-03-03-core-3).
diff --git a/packages/agent-toolkit/package.json b/packages/agent-toolkit/package.json
index b122f261af3..3d91cef2c16 100644
--- a/packages/agent-toolkit/package.json
+++ b/packages/agent-toolkit/package.json
@@ -74,5 +74,6 @@
   },
   "publishConfig": {
     "access": "public"
-  }
+  },
+  "deprecated": "This package is no longer supported."
 }
diff --git a/packages/elements/package.json b/packages/elements/package.json
index 9d0fe87c387..ae48999638f 100644
--- a/packages/elements/package.json
+++ b/packages/elements/package.json
@@ -104,5 +104,6 @@
   },
   "publishConfig": {
     "access": "public"
-  }
+  },
+  "deprecated": "This package is no longer supported. Please see the Core 3 release for more information: https://clerk.com/changelog/2026-03-03-core-3"
 }