Codex app thread-management tools are no longer exposed to agents after update

What version of the Codex App are you using (From “About Codex” dialog)?

26.707.91948

What subscription do you have?

Pro

What platform is your computer?

Microsoft Windows NT 10.0.26100.0 x64

What issue are you seeing?

After updating the Codex desktop app, the agent-facing thread-management tools are missing from the tool registry.

My workflows make heavy use of these thread tools for orchestration, and this is blocking development of half of my projects.

Previously, agents could use tools such as:

• create_thread
• read_thread
• list_threads
• send_message_to_thread
• fork_thread
• handoff_thread
• set_thread_title
• set_thread_pinned
• set_thread_archived

In a new session after the update, none of these tools are available. Only limited Codex app tools such as terminal reading, workspace dependency loading, and page navigation are exposed.

What steps can reproduce the bug?

1. Update the Codex desktop app to the latest version.
2. Start a new Codex task.
3. Ask the agent to list its available tools or perform a task that requires creating and managing another Codex task.
4. Observe that the thread-management tools are absent.

What is the expected behavior?

The Codex app should expose its supported thread-management tools to the agent, including tools for creating, listing, reading, messaging, and managing tasks.

Additional information

The current official Codex documentation still describes tasks, agent threads, and parallel-agent management. I could not find a release note announcing removal of these capabilities.

Restarting the app and creating a new task did not restore the missing tools.