agenticcodingdocumented
OpenAI Codex
OpenAI's coding agent CLI (and related app-server path). Tool-using, session-gated.
- Who it’s for
- Developers using Codex in a terminal, worktree, or MCP-connected session.
- How it runs
- Tool use + multi-step plans, still human-gated per session.
- Runtime
- cli
- Last ship on file
- v0.155.0 (release notes, Sep 18 2026)
- Limits of this dossier
- Desk coverage is GitHub release comparison. Touch ID, Bedrock rotation, and worktree features are documented, not independently re-tested here.
Primary sources
Coverage
- OpenAI Codex v0.155.0: Touch ID for MCP Requests, Bedrock Credential Rotation, Experimental Voice
- OpenAI Codex v0.154.0: Worktrees, Inline Ask-While-Working, Windows Server Sharing, Vim Replace
- OpenAI Codex v0.153.0 Lands Vim Undo/Redo With Full Draft Preservation, a Plugin CLI That Manages Remote Marketplaces, and an Experimental Context Manager for ChatGPT Plus and Pro. The TUI Reconnect Story Is Underneath.
- OpenAI Codex v0.152.0 Quietly Landed Six New Capabilities, One Breaking Default Change, and a Credential-Theft Fix. The MCP Changes Are the Most Consequential.