Login with ChatGPT

description: Use your ChatGPT login with Codex CLI (requires a paid ChatGPT subscription)

Use CODEX_API_KEY

description: Requires setting the `CODEX_API_KEY` environment variable.

Use OPENAI_API_KEY

description: Requires setting the `OPENAI_API_KEY` environment variable.

codex-acp

title: Codex


Resource not found


currentModeId: auto

Read Only

description: Codex can read files in the current workspace. Approval is required to edit files or access the internet.

Default

description: Codex can read and edit files in the current workspace, and run commands. Approval is required to access the internet or edit other files. (Identical to Agent mode)

Full Access

description: Codex can edit files outside this workspace and access the internet without asking for approval. Exercise caution when using.

gpt-5.3-codex (low)

description: Latest frontier agentic coding model. Fast responses with lighter reasoning

gpt-5.3-codex (medium)

description: Latest frontier agentic coding model. Balances speed and reasoning depth for everyday tasks

gpt-5.3-codex (high)

description: Latest frontier agentic coding model. Greater reasoning depth for complex problems

gpt-5.3-codex (xhigh)

description: Latest frontier agentic coding model. Extra high reasoning depth for complex problems

gpt-5.2-codex (low)

description: Frontier agentic coding model. Fast responses with lighter reasoning

gpt-5.2-codex (medium)

description: Frontier agentic coding model. Balances speed and reasoning depth for everyday tasks

gpt-5.2-codex (high)

description: Frontier agentic coding model. Greater reasoning depth for complex problems

gpt-5.2-codex (xhigh)

description: Frontier agentic coding model. Extra high reasoning depth for complex problems

gpt-5.1-codex-max (low)

description: Codex-optimized flagship for deep and fast reasoning. Fast responses with lighter reasoning

gpt-5.1-codex-max (medium)

description: Codex-optimized flagship for deep and fast reasoning. Balances speed and reasoning depth for everyday tasks

gpt-5.1-codex-max (high)

description: Codex-optimized flagship for deep and fast reasoning. Greater reasoning depth for complex problems

gpt-5.1-codex-max (xhigh)

description: Codex-optimized flagship for deep and fast reasoning. Extra high reasoning depth for complex problems

gpt-5.2 (low)

description: Latest frontier model with improvements across knowledge, reasoning and coding Balances speed with some reasoning; useful for straightforward queries and short explanations

gpt-5.2 (medium)

description: Latest frontier model with improvements across knowledge, reasoning and coding Provides a solid balance of reasoning depth and latency for general-purpose tasks

gpt-5.2 (high)

description: Latest frontier model with improvements across knowledge, reasoning and coding Maximizes reasoning depth for complex or ambiguous problems

gpt-5.2 (xhigh)

description: Latest frontier model with improvements across knowledge, reasoning and coding Extra high reasoning for complex problems

gpt-5.1-codex-mini (medium)

description: Optimized for codex. Cheaper, faster, but less capable. Dynamically adjusts reasoning based on the task

gpt-5.1-codex-mini (high)

description: Optimized for codex. Cheaper, faster, but less capable. Maximizes reasoning depth for complex or ambiguous problems

Approval Preset

description: Choose an approval and sandboxing preset for your session

category: mode

type: select

currentValue: auto

Read Only

value: read-only

Default

value: auto

Full Access

value: full-access

Model

description: Choose which model Codex should use

category: model

description: Latest frontier agentic coding model.

description: Frontier agentic coding model.

Reasoning Effort

description: Choose how much reasoning effort the model should use

currentValue: medium

Low

value: low

description: Fast responses with lighter reasoning

Medium

value: medium

High

value: high

Xhigh

value: xhigh


method: session/update

review

description: Review my current changes and find issues

review-branch

description: Review the code changes against a specific branch

review-commit

description: Review the code changes introduced by a commit

init

description: create an AGENTS.md file with instructions for Codex

compact

description: summarize conversation to prevent hitting the context limit

undo

description: undo Codex’s most recent turn

logout

description: logout of Codex


method: session/prompt

text: [Tue 2026-03-03 18:49 UTC] Smoke test: respond exactly codex-ok


type: text

text: cod


text: ex


text: -ok