diff --git a/inventories/clients/gpt/group_vars/all.yml b/inventories/clients/gpt/group_vars/all.yml
new file mode 100644
index 0000000..26690a0
--- /dev/null
+++ b/inventories/clients/gpt/group_vars/all.yml
@@ -0,0 +1,8 @@
+---
+# Client: GP Technologies (GPT-001)
+# Onboarded: 2026-04-28
+# Type: basic
+# VPN: none
+# Billing: hybrid
+
+# Add client-specific overrides below
diff --git a/inventories/clients/gpt/hosts.yml b/inventories/clients/gpt/hosts.yml
new file mode 100644
index 0000000..dee91cb
--- /dev/null
+++ b/inventories/clients/gpt/hosts.yml
@@ -0,0 +1,30 @@
+---
+all:
+  vars:
+    client_id: "GPT-001"
+    client_name: "GP Technologies"
+    billing_model: "hybrid"
+    maintenance_window_start: "02:00"
+    maintenance_window_end: "05:00"
+    maintenance_window_tz: "UTC"
+    change_freeze: false
+    hypervisor_type: "none"
+    vpn_type: "none"
+    auto_reboot: false
+    human_estimate_seconds: 2700
+
+  children:
+    linux_hosts:
+      hosts: {}
+      vars:
+        ansible_user: root
+        os_family: "debian"
+
+    windows_hosts:
+      hosts: {}
+      vars:
+        ansible_user: Administrator
+        ansible_connection: winrm
+        ansible_winrm_transport: ntlm
+        ansible_winrm_server_cert_validation: validate
+        ansible_port: 5986