Codex 0.155 adds experimental voice chats and Touch ID for MCP

OpenAI’s official Codex repository released 0.155.0 on September 17, 2026. The release adds experimental voice conversations to supported builds, Touch ID verification for local MCP requests on supported Macs, and a set of task, daemon, and credential-handling improvements.

Experimental voice conversations

Codex 0.155.0 adds an experimental /voice conversation mode with live transcripts and microphone controls. The release notes describe the feature as available on supported builds and enabled through /experimental, so teams should not treat it as a stable default or assume every platform has the required voice resources.

The TUI also shows live reasoning summaries in its status row and completion timestamps after successful turns. These are presentation changes, but they make long-running terminal sessions easier to monitor without opening a separate dashboard.

Verify local MCP requests with Touch ID

On supported Macs, local TUI sessions can use Touch ID verification for MCP requests. This adds a device-level confirmation step to a class of tool calls that may otherwise reach local services with the session’s existing permissions.

Teams should still apply MCP allowlists and review server configuration. Touch ID is an additional user-verification mechanism, not a substitute for least-privilege tool design or checking what an MCP server can do.

Better task and daemon management

The agents overview can now hide, archive, and delete tasks. Codex also shows worktree ownership details and confirms deletion of clean managed worktrees, which makes it easier to distinguish disposable task state from work that still has local changes.

The app-server daemon gains configurable update schedules and an explicit codex app-server daemon update command. Saved threads and active goals can recover after daemon restarts. The release also improves MCP OAuth expiry reporting and reconnect guidance, and Amazon Bedrock can obtain AWS credentials from configured commands with caching, expiration-based refresh, and authentication recovery.

Upgrade notes

The 0.155.0 release includes Windows sandbox hardening, more reliable approval-review evidence, and account-switching cleanup for remote-control sessions and model catalogs. Because voice and user verification are platform- and build-dependent, test the upgrade in a non-production environment before making it the default CLI for a team.

Sources

• OpenAI Codex — official 0.155.0 release (September 17, 2026): https://github.com/openai/codex/releases/tag/rust-v0.155.0
• OpenAI Codex — official releases: https://github.com/openai/codex/releases
• OpenAI Developers — ChatGPT & Codex changelog: https://developers.openai.com/codex/changelog
• OpenAI Developers on X — official developer updates: https://x.com/OpenAIDevs