diff --git a/pkgs/applications/misc/seashells/default.nix b/pkgs/applications/misc/seashells/default.nix
new file mode 100644
index 000000000000..bc4d3cfdbfc3
--- /dev/null
+++ b/pkgs/applications/misc/seashells/default.nix
@@ -0,0 +1,26 @@
+{ lib, python3Packages }:
+
+python3Packages.buildPythonApplication rec {
+  pname = "seashells";
+  version = "0.1.2";
+  format = "setuptools";
+
+  src = python3Packages.fetchPypi {
+    inherit pname version;
+    sha256 = "sha256-RBs28FC7f82DrxRcmvTP9nljVpm7tjrGuvr05l32hDM=";
+  };
+
+  doCheck = false; # there are no tests
+  pythonImportsCheck = [ "seashells" ];
+
+  meta = with lib; {
+    homepage = "https://seashells.io/";
+    description = "Pipe command-line programs to seashells.io";
+    longDescription = ''
+      Official cient for seashells.io, which allows you to view
+      command-line output on the web, in real-time.
+    '';
+    license = licenses.mit;
+    maintainers = with maintainers; [ deejayem ];
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index d51c3eb0723e..51277870bfb9 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -11464,6 +11464,8 @@ with pkgs;
 
   skim = callPackage ../tools/misc/skim { };
 
+  seashells = callPackage ../applications/misc/seashells { };
+
   seaweedfs = callPackage ../applications/networking/seaweedfs { };
 
   sec = callPackage ../tools/admin/sec { };