Codex CLI 0.131.0: Richer TUI Controls and Unified Mentions
TL;DR
Codex CLI 0.131.0 brings richer session controls and responsive Markdown tables to the TUI, unified file and plugin search via @ mentions, and new marketplace CLI commands. It also introduces the codex doctor diagnostic tool and improves Windows sandbox behavior.
What changed
Codex CLI 0.131.0 landed on May 21 2026. It adds richer session controls and responsive Markdown tables inside the TUI. The release also unifies file and plugin search behind @ mentions and ships new marketplace CLI commands.
A new codex doctor diagnostic tool appears for the first time. Windows sandbox behavior receives targeted fixes that reduce permission friction during local runs.
Why it matters
Solo builders who already route tasks through Notion databases and Zapier webhooks now get faster context switching inside the terminal. Unified @ mentions cut down on typing full paths or plugin names, which matters when an agent chain runs ten steps without pause.
The doctor command surfaces sandbox and config issues before a long-running job fails at 3 a.m. This reduces the hidden tax of maintaining custom agent loops on a single machine.
How to use it
Run npm install -g @openai/codex@0.131.0 to pull the update. Open any existing Codex session and type @ followed by a filename or plugin name to test the new search.
Launch codex doctor from the same terminal to generate a report on sandbox state and marketplace reachability. The command works on the free tier and requires no extra tokens.
Watch for
Stable marketplace command output across Windows and macOS will confirm the bet. Repeated doctor false positives on valid configs would break trust. Expect a follow-up release that wires the same @ syntax into the IDE extension within the next four weeks.
Who this matters for
- Vibe Builders: Use the new @ mentions to quickly pull files into agent chains without manual path copying.
- Developers: Run codex doctor to debug Windows sandbox permissions and marketplace connectivity in local loops.
Harsh’s take
The unification of file and plugin search under the @ mention syntax is a massive win for terminal ergonomics. Most CLI tools fail because they require too much cognitive load to remember specific flags or paths. By mirroring the UX of modern chat apps, Codex makes the terminal feel like a collaborative space rather than a rigid syntax engine.
This reduces friction for builders running complex, multi-step agent workflows. The introduction of a diagnostic tool like codex doctor is a pragmatic move for OpenAI. Local sandbox issues, especially on Windows, are the primary point of failure for developers trying to scale local agent execution.
Providing a first party way to validate the environment before a job fails saves hours of troubleshooting. This release prioritizes operational stability over flashy features, which is exactly what a maturing CLI ecosystem needs.
by Harsh Desai
About OpenAI Codex
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