diff --git a/plugins/android/plugin.json b/plugins/android/plugin.json
index 37d7753..1a3ff9c 100644
--- a/plugins/android/plugin.json
+++ b/plugins/android/plugin.json
@@ -29,6 +29,7 @@
     "REPORTS_DIR": "reports"
   },
   "packages": {
+    "github:segment-integrations/mobile-devtools?dir=segkit&ref=main": "",
     "bash": "latest",
     "coreutils": "latest",
     "gnused": "latest",
diff --git a/plugins/ios/plugin.json b/plugins/ios/plugin.json
index 90d2f66..837ce0c 100644
--- a/plugins/ios/plugin.json
+++ b/plugins/ios/plugin.json
@@ -23,6 +23,7 @@
     "LANG": "en_US.UTF-8"
   },
   "packages": {
+    "github:segment-integrations/mobile-devtools?dir=segkit&ref=main": "",
     "bash": "latest",
     "coreutils": "latest",
     "gnused": "latest",
diff --git a/scripts/dev/rewrite-plugin-urls.sh b/scripts/dev/rewrite-plugin-urls.sh
index 869aa76..de067f6 100755
--- a/scripts/dev/rewrite-plugin-urls.sh
+++ b/scripts/dev/rewrite-plugin-urls.sh
@@ -65,6 +65,19 @@ case "$mode" in
       fi
     fi
 
+    # Rewrite segkit package references in plugin.json files
+    segkit_github="github:segment-integrations/mobile-devtools?dir=segkit&ref=main"
+    for plugin_file in plugins/android/plugin.json plugins/ios/plugin.json; do
+      if [ -f "$plugin_file" ] && grep -q "$segkit_github" "$plugin_file"; then
+        echo "    Rewriting segkit ref in: $plugin_file"
+        # Replace the github flake ref with a local path ref
+        jq --arg gh "$segkit_github" '.packages = (.packages | to_entries | map(
+          if .key == $gh then .key = "path:./segkit" else . end
+        ) | from_entries)' "$plugin_file" > "$plugin_file.tmp" \
+          && mv "$plugin_file.tmp" "$plugin_file"
+      fi
+    done
+
     echo "✓ Rewrote plugin URLs to local paths"
     ;;
 
@@ -117,6 +130,18 @@ case "$mode" in
         && mv "plugins/react-native/plugin.json.tmp" "plugins/react-native/plugin.json"
     fi
 
+    # Restore segkit package references in plugin.json files
+    segkit_github="github:segment-integrations/mobile-devtools?dir=segkit&ref=main"
+    for plugin_file in plugins/android/plugin.json plugins/ios/plugin.json; do
+      if [ -f "$plugin_file" ] && grep -q "path:./segkit" "$plugin_file"; then
+        echo "    Restoring segkit ref in: $plugin_file"
+        jq --arg gh "$segkit_github" '.packages = (.packages | to_entries | map(
+          if .key == "path:./segkit" then .key = $gh else . end
+        ) | from_entries)' "$plugin_file" > "$plugin_file.tmp" \
+          && mv "$plugin_file.tmp" "$plugin_file"
+      fi
+    done
+
     echo "✓ Restored plugin URLs to GitHub format"
     ;;
 
diff --git a/segkit/Cargo.toml b/segkit/Cargo.toml
index e67b726..0bf6725 100644
--- a/segkit/Cargo.toml
+++ b/segkit/Cargo.toml
@@ -3,7 +3,7 @@ name = "segkit"
 version = "0.1.0"
 edition = "2024"
 description = "Segment SDK developer toolkit"
-license = "MIT"
+license = "Apache-2.0"
 repository = "https://github.com/segment-integrations/mobile-devtools"
 
 [[bin]]
diff --git a/segkit/flake.lock b/segkit/flake.lock
new file mode 100644
index 0000000..4af3961
--- /dev/null
+++ b/segkit/flake.lock
@@ -0,0 +1,27 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1778124196,
+        "narHash": "sha256-pYEytCNic/czazbV9r3tbQ6BZzqRBg/41x2dIC5ymOo=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "68a8af93ff4297686cb68880845e61e5e2e41d92",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/segkit/flake.nix b/segkit/flake.nix
new file mode 100644
index 0000000..7e9acb4
--- /dev/null
+++ b/segkit/flake.nix
@@ -0,0 +1,50 @@
+{
+  description = "Segment SDK developer toolkit (segkit CLI)";
+
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+
+  outputs =
+    { self, nixpkgs }:
+    let
+      systems = [
+        "x86_64-linux"
+        "aarch64-linux"
+        "x86_64-darwin"
+        "aarch64-darwin"
+      ];
+
+      forAllSystems =
+        f:
+        builtins.listToAttrs (
+          map (system: {
+            name = system;
+            value = f system;
+          }) systems
+        );
+    in
+    {
+      packages = forAllSystems (
+        system:
+        let
+          pkgs = import nixpkgs { inherit system; };
+        in
+        {
+          default = pkgs.rustPlatform.buildRustPackage {
+            pname = "segkit";
+            version = "0.1.0";
+            src = ./.;
+            cargoLock.lockFile = ./Cargo.lock;
+            doCheck = false;
+
+            meta = {
+              description = "Segment SDK developer toolkit";
+              license = pkgs.lib.licenses.asl20;
+              mainProgram = "segkit";
+            };
+          };
+
+          segkit = self.packages.${system}.default;
+        }
+      );
+    };
+}