diff --git a/CHANGELOG.md b/CHANGELOG.md
index 71733ada0ce..1511fc911e5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -19,6 +19,7 @@ Docs: https://docs.openclaw.ai
 
 ### Fixes
 
+- Plugins/externalization: pin beta-only official launch packages for ACPX, Google Chat, and LINE to explicit npm beta specs so catalog-driven installs do not trip the prerelease safety guard while npm `latest` still points at beta. Thanks @vincentkoc.
 - Control UI/Talk: fix Talk (OpenAI Realtime WebRTC) CORS failure by stripping server-side-only attribution headers (`originator`, `version`, `User-Agent`) from browser offer headers; `api.openai.com/v1/realtime/calls` only allows `authorization` and `content-type` in its CORS preflight, so forwarding these headers caused the browser SDP exchange to fail. Fixes #76435. Thanks @hclsys.
 - CLI/logs: auto-reconnect `openclaw logs --follow` on transient gateway disconnects (WebSocket close, timeout, connection drop) with bounded exponential backoff (up to 8 retries, capped at 30 s) and stderr retry warnings, while still exiting immediately on non-recoverable auth or configuration errors. Fixes #74782. (#75059) Thanks @shashank-poola.
 - Plugins/onboarding: trust optional official plugin and web-search installs selected from the official catalog so npm security scanning treats them like other source-linked official install paths. Thanks @vincentkoc.
diff --git a/scripts/lib/official-external-channel-catalog.json b/scripts/lib/official-external-channel-catalog.json
index fbd530304fc..92119d96627 100644
--- a/scripts/lib/official-external-channel-catalog.json
+++ b/scripts/lib/official-external-channel-catalog.json
@@ -176,7 +176,7 @@
           ]
         },
         "install": {
-          "npmSpec": "@openclaw/googlechat",
+          "npmSpec": "@openclaw/googlechat@beta",
           "defaultChoice": "npm",
           "minHostVersion": ">=2026.4.10"
         }
@@ -201,7 +201,7 @@
           "quickstartAllowFrom": true
         },
         "install": {
-          "npmSpec": "@openclaw/line",
+          "npmSpec": "@openclaw/line@beta",
           "defaultChoice": "npm",
           "minHostVersion": ">=2026.4.10"
         }
diff --git a/scripts/lib/official-external-plugin-catalog.json b/scripts/lib/official-external-plugin-catalog.json
index dd2c50a46d7..67fc6721cff 100644
--- a/scripts/lib/official-external-plugin-catalog.json
+++ b/scripts/lib/official-external-plugin-catalog.json
@@ -11,7 +11,7 @@
           "label": "ACPX Runtime"
         },
         "install": {
-          "npmSpec": "@openclaw/acpx",
+          "npmSpec": "@openclaw/acpx@beta",
           "defaultChoice": "npm",
           "minHostVersion": ">=2026.4.25"
         }
diff --git a/src/plugins/official-external-plugin-catalog.test.ts b/src/plugins/official-external-plugin-catalog.test.ts
index b4ad7a301d5..29d3f622c2f 100644
--- a/src/plugins/official-external-plugin-catalog.test.ts
+++ b/src/plugins/official-external-plugin-catalog.test.ts
@@ -1,6 +1,7 @@
 import { describe, expect, it } from "vitest";
 import {
   getOfficialExternalPluginCatalogEntry,
+  listOfficialExternalPluginCatalogEntries,
   resolveOfficialExternalPluginId,
   resolveOfficialExternalPluginInstall,
 } from "./official-external-plugin-catalog.js";
@@ -21,4 +22,28 @@ describe("official external plugin catalog", () => {
       "openclaw-plugin-yuanbao@2.11.0",
     );
   });
+
+  it("opts current beta-only official launch packages into prerelease npm tags", () => {
+    expect(
+      resolveOfficialExternalPluginInstall(getOfficialExternalPluginCatalogEntry("acpx")!)?.npmSpec,
+    ).toBe("@openclaw/acpx@beta");
+    expect(
+      resolveOfficialExternalPluginInstall(getOfficialExternalPluginCatalogEntry("googlechat")!)
+        ?.npmSpec,
+    ).toBe("@openclaw/googlechat@beta");
+    expect(
+      resolveOfficialExternalPluginInstall(getOfficialExternalPluginCatalogEntry("line")!)?.npmSpec,
+    ).toBe("@openclaw/line@beta");
+  });
+
+  it("keeps Matrix and Mattermost out of the external catalog until cutover", () => {
+    const ids = new Set(
+      listOfficialExternalPluginCatalogEntries()
+        .map((entry) => resolveOfficialExternalPluginId(entry))
+        .filter(Boolean),
+    );
+
+    expect(ids.has("matrix")).toBe(false);
+    expect(ids.has("mattermost")).toBe(false);
+  });
 });