diff --git a/ansible/inventory/group_vars/all.yml b/ansible/inventory/group_vars/all.yml
index e9f504a..47759b1 100644
--- a/ansible/inventory/group_vars/all.yml
+++ b/ansible/inventory/group_vars/all.yml
@@ -68,10 +68,16 @@ ai_agents_dotfiles:
     dest: .config/ai
     mode: preserve
   - name: Gemini CLI config
-    src: .gemini
-    dest: .gemini
-    mode: preserve
+    src: .gemini/settings.json
+    dest: .gemini/settings.json
+    mode: "0644"
   - name: OpenCode config
     src: .config/opencode
     dest: .config/opencode
     mode: preserve
+
+ai_agents_templates:
+  - name: Codex config
+    src: .codex/config.toml.j2
+    dest: .codex/config.toml
+    mode: "0644"
diff --git a/ansible/roles/dotfiles_common/tasks/main.yml b/ansible/roles/dotfiles_common/tasks/main.yml
index 9e18a72..5759209 100644
--- a/ansible/roles/dotfiles_common/tasks/main.yml
+++ b/ansible/roles/dotfiles_common/tasks/main.yml
@@ -37,6 +37,30 @@
   loop_control:
     label: "{{ item.dest }}"
 
+- name: Ensure AI config directories exist
+  tags: [dotfiles, dotfiles:common]
+  ansible.builtin.file:
+    path: "{{ effective_user_home }}/{{ item }}"
+    state: directory
+    owner: "{{ effective_username }}"
+    group: "{{ effective_user_group }}"
+    mode: "0755"
+  loop:
+    - .codex
+  when: (ai_agents_templates | default([])) | length > 0
+
+- name: Render AI agent templates
+  tags: [dotfiles, dotfiles:common]
+  ansible.builtin.template:
+    src: "{{ playbook_dir }}/../dotfiles/common/{{ item.src }}"
+    dest: "{{ effective_user_home }}/{{ item.dest }}"
+    owner: "{{ effective_username }}"
+    group: "{{ effective_user_group }}"
+    mode: "{{ item.mode }}"
+  loop: "{{ ai_agents_templates | default([]) }}"
+  loop_control:
+    label: "{{ item.dest }}"
+
 - name: Refresh bat cache
   tags: [dotfiles, dotfiles:common]
   ansible.builtin.command:
diff --git a/dotfiles/common/.codex/config.toml.j2 b/dotfiles/common/.codex/config.toml.j2
new file mode 100644
index 0000000..ced7015
--- /dev/null
+++ b/dotfiles/common/.codex/config.toml.j2
@@ -0,0 +1,16 @@
+model = "gpt-5.5"
+model_reasoning_effort = "medium"
+
+model_instructions_file = "{{ effective_user_home }}/.config/ai/bootstrap.md"
+
+[projects."/home/fscotto/AnsiblePlaybook"]
+trust_level = "trusted"
+
+[tui]
+theme = "coldark-dark"
+
+[tui.model_availability_nux]
+"gpt-5.5" = 3
+
+[features]
+memories = true