diff --git a/README.md b/README.md
index 8b91069..5295a09 100644
--- a/README.md
+++ b/README.md
@@ -13,6 +13,7 @@ A custom Nix overlay and flake providing additional packages not found in upstre
 | Package | Description | Category |
 |---------|-------------|----------|
 | `container-use` | Containerized environments for coding agents | AI Coding Agents |
+| `desloppify` | Multi-language codebase health scanner and technical debt tracker for AI agents | AI Coding Agents |
 | `goose-cli` | CLI for Goose - a local, extensible, open source AI agent that automates engineering tasks | AI Coding Agents |
 | `graphify` | Turn any folder of code, docs, papers, images, or videos into a queryable knowledge graph | AI Coding Agents |
 | `mcp-gateway` | Universal Model Context Protocol gateway that sits between AI client and MCP tools/servers | MCP Servers |
@@ -104,6 +105,7 @@ nix-overlay/
 │   └── shared-nixpkgs.nix      # Dependency-sharing overlay
 ├── packages/                    # Package definitions
 │   ├── default/                # Meta-package listing all packages
+│   ├── desloppify/             # Codebase health scanner for AI agents
 │   ├── flake-inputs/           # Utility for caching flake inputs
 │   ├── goose-cli/              # Goose AI agent CLI
 │   ├── graphify/               # Knowledge graph generator for code folders
diff --git a/packages/desloppify/default.nix b/packages/desloppify/default.nix
new file mode 100644
index 0000000..0ee9128
--- /dev/null
+++ b/packages/desloppify/default.nix
@@ -0,0 +1 @@
+{ pkgs, ... }: pkgs.callPackage ./package.nix { }
diff --git a/packages/desloppify/package.nix b/packages/desloppify/package.nix
new file mode 100644
index 0000000..505646a
--- /dev/null
+++ b/packages/desloppify/package.nix
@@ -0,0 +1,54 @@
+{
+  lib,
+  python3Packages,
+  fetchFromGitHub,
+}:
+
+python3Packages.buildPythonApplication rec {
+  pname = "desloppify";
+  version = "0.9.15";
+  pyproject = true;
+
+  src = fetchFromGitHub {
+    owner = "peteromallet";
+    repo = "desloppify";
+    rev = "v${version}";
+    hash = "sha256-KVCt9loGSzsOaYSLNzpyUCi/TpCDQ4b6BxEydQTRNcA=";
+  };
+
+  build-system = with python3Packages; [
+    setuptools
+  ];
+
+  # Include all [full] optional dependencies for complete functionality.
+  # Upstream has no base dependencies - all features are behind optional extras.
+  dependencies = with python3Packages; [
+    tree-sitter
+    tree-sitter-language-pack
+    defusedxml
+    bandit
+    pillow
+    pyyaml
+  ];
+
+  doCheck = false;
+  pythonImportsCheck = [ "desloppify" ];
+
+  passthru = {
+    category = "AI Coding Agents";
+    updateScript = [
+      "nix-update"
+      "--flake"
+      ".#desloppify"
+    ];
+  };
+
+  meta = {
+    description = "Multi-language codebase health scanner and technical debt tracker for AI agents";
+    homepage = "https://github.com/peteromallet/desloppify";
+    changelog = "https://github.com/peteromallet/desloppify/releases/tag/v${version}";
+    license = lib.licenses.unfreeRedistributable;
+    mainProgram = "desloppify";
+    platforms = lib.platforms.all;
+  };
+}