diff --git a/pkgs/development/python-modules/clx-sdk-xms/default.nix b/pkgs/development/python-modules/clx-sdk-xms/default.nix
new file mode 100644
index 000000000000..dd5a56dfbca0
--- /dev/null
+++ b/pkgs/development/python-modules/clx-sdk-xms/default.nix
@@ -0,0 +1,40 @@
+{
+  lib,
+  buildPythonPackage,
+  fetchFromGitHub,
+  iso8601,
+  requests,
+  setuptools,
+  unstableGitUpdater,
+}:
+
+buildPythonPackage {
+  pname = "clx-sdk-xms";
+  version = "0-unstable-2017-01-23";
+  pyproject = true;
+
+  src = fetchFromGitHub {
+    owner = "clxcommunications";
+    repo = "sdk-xms-python";
+    rev = "8d629cd7bcaf91eaafee265a825e3c52191f1425";
+    hash = "sha256-qMR9OT+QAKZGwDuoZVAtfKD3PQB7rEU/iTRjgACVGBs=";
+  };
+
+  build-system = [ setuptools ];
+
+  dependencies = [
+    iso8601
+    requests
+  ];
+
+  pythonImportsCheck = [ "clx.xms" ];
+
+  passthru.updateScript = unstableGitUpdater { };
+
+  meta = {
+    description = "Python SDK for the CLX Communications REST API (XMS) for sending and receiving SMS";
+    homepage = "https://github.com/clxcommunications/sdk-xms-python";
+    license = lib.licenses.asl20;
+    maintainers = [ lib.maintainers.jamiemagee ];
+  };
+}
diff --git a/pkgs/servers/home-assistant/component-packages.nix b/pkgs/servers/home-assistant/component-packages.nix
index 0993c012d17d..68209f8be6ef 100644
--- a/pkgs/servers/home-assistant/component-packages.nix
+++ b/pkgs/servers/home-assistant/component-packages.nix
@@ -5403,7 +5403,8 @@
       ];
     "sinch" =
       ps: with ps; [
-      ]; # missing inputs: clx-sdk-xms
+        clx-sdk-xms
+      ];
     "siren" =
       ps: with ps; [
       ];
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 8136568aebdd..c3d4ebdd407f 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -2698,6 +2698,8 @@ self: super: with self; {
 
   clustershell = callPackage ../development/python-modules/clustershell { };
 
+  clx-sdk-xms = callPackage ../development/python-modules/clx-sdk-xms { };
+
   cma = callPackage ../development/python-modules/cma { };
 
   cmaes = callPackage ../development/python-modules/cmaes { };