diff --git a/ubuntu-server/.config/nix/flake.lock b/ubuntu-server/.config/nix/flake.lock
index d5681f40..5d412794 100644
--- a/ubuntu-server/.config/nix/flake.lock
+++ b/ubuntu-server/.config/nix/flake.lock
@@ -1,12 +1,25 @@
 {
   "nodes": {
+    "multica-bin": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1776856195,
+        "narHash": "sha256-AoLAujg5sifTo76woETf9a39gdjJzM9LrYRQO4A5Li4=",
+        "type": "tarball",
+        "url": "https://github.com/multica-ai/multica/releases/latest/download/multica_linux_amd64.tar.gz"
+      },
+      "original": {
+        "type": "tarball",
+        "url": "https://github.com/multica-ai/multica/releases/latest/download/multica_linux_amd64.tar.gz"
+      }
+    },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1770843696,
-        "narHash": "sha256-LovWTGDwXhkfCOmbgLVA10bvsi/P8eDDpRudgk68HA8=",
+        "lastModified": 1771177547,
+        "narHash": "sha256-trTtk3WTOHz7hSw89xIIvahkgoFJYQ0G43IlqprFoMA=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "2343bbb58f99267223bc2aac4fc9ea301a155a16",
+        "rev": "ac055f38c798b0d87695240c7b761b82fc7e5bc2",
         "type": "github"
       },
       "original": {
@@ -18,6 +31,7 @@
     },
     "root": {
       "inputs": {
+        "multica-bin": "multica-bin",
         "nixpkgs": "nixpkgs"
       }
     }
diff --git a/ubuntu-server/.config/nix/flake.nix b/ubuntu-server/.config/nix/flake.nix
index 9bfba7d5..4d31a611 100644
--- a/ubuntu-server/.config/nix/flake.nix
+++ b/ubuntu-server/.config/nix/flake.nix
@@ -2,13 +2,36 @@
   description = "Package set for my Ubuntu server";
 
   inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+  inputs.multica-bin = {
+    url = "https://github.com/multica-ai/multica/releases/latest/download/multica_linux_amd64.tar.gz";
+    flake = false;
+  };
 
-  outputs = { self, nixpkgs }:
+  outputs = { self, nixpkgs, multica-bin }:
     let
       # Your server's architecture.  Change if you're not x86_64.
       system = "x86_64-linux";
       pkgs = import nixpkgs { inherit system; };
 
+      multica = pkgs.stdenv.mkDerivation {
+        pname = "multica";
+        version = "latest";
+        src = multica-bin;
+        nativeBuildInputs = [ pkgs.autoPatchelfHook ];
+        buildInputs = [ pkgs.stdenv.cc.cc.lib ];
+        dontConfigure = true;
+        dontBuild = true;
+        installPhase = ''
+          runHook preInstall
+          install -Dm755 multica $out/bin/multica
+          runHook postInstall
+        '';
+        meta = {
+          description = "Multica CLI — managed agents platform";
+          homepage = "https://github.com/multica-ai/multica";
+        };
+      };
+
       tsshd = pkgs.buildGoModule rec {
         pname = "tsshd";
         version = "0.1.6";
@@ -70,6 +93,7 @@
             zoxide
             zsh
             tsshd
+            multica
           ];
         };
       };