diff --git a/cads_api_client/legacy_api_client.py b/cads_api_client/legacy_api_client.py
index cb1c7c7..ed82808 100644
--- a/cads_api_client/legacy_api_client.py
+++ b/cads_api_client/legacy_api_client.py
@@ -133,9 +133,10 @@ def issue_deprecated_kwargs_warning(self, **kwargs: Any) -> None:
             )
 
     @classmethod
-    def raise_not_implemented_error(self) -> None:
+    def raise_toolbox_error(self) -> None:
         raise NotImplementedError(
-            "This is a beta version. This functionality has not been implemented yet."
+            "Legacy CDS Toolbox is now discontinued."
+            " Watch for announcements/updates on new CDS improved capabilities on our Forum (https://forum.ecmwf.int/)."
         )
 
     @overload
@@ -190,11 +191,13 @@ def error(self, *args: Any, **kwargs: Any) -> None:
     def debug(self, *args: Any, **kwargs: Any) -> None:
         self.log(logging.DEBUG, *args, **kwargs)
 
-    def service(self, name, *args, **kwargs):  # type: ignore
-        self.raise_not_implemented_error()
+    @typing.no_type_check
+    def service(self, name, *args, **kwargs):
+        self.raise_toolbox_error()
 
-    def workflow(self, code, *args, **kwargs):  # type: ignore
-        self.raise_not_implemented_error()
+    @typing.no_type_check
+    def workflow(self, code, *args, **kwargs):
+        self.raise_toolbox_error()
 
     def status(self, context: Any = None) -> dict[str, list[str]]:
         status = collections.defaultdict(list)
diff --git a/tests/integration_test_70_legacy_api_client.py b/tests/integration_test_70_legacy_api_client.py
index d8355d8..9ea8e03 100644
--- a/tests/integration_test_70_legacy_api_client.py
+++ b/tests/integration_test_70_legacy_api_client.py
@@ -305,3 +305,10 @@ def test_legacy_api_client_warning(
             metadata="b",  # type: ignore[arg-type]
             forget="c",  # type: ignore[arg-type]
         )
+
+
+def test_legacy_api_client_toolbox(legacy_client: LegacyApiClient) -> None:
+    with pytest.raises(NotImplementedError):
+        legacy_client.service("service")
+    with pytest.raises(NotImplementedError):
+        legacy_client.workflow("workflow")