All Codex CLI Commands Explained – 2026 Edition

Codex CLI commands

codex

– Starts the interactive mode, allowing continuous questioning, code modification and multi‑turn context. Example: codex After the prompt appears, you can type a request such as:

帮我分析整个SpringBoot项目架构

codex "prompt"

– Executes a single‑turn task and exits. Example: codex "生成一个 Spring Boot REST API" Typical use cases: quick code generation, knowledge lookup, one‑off tasks. codex --help – Shows all parameters, sub‑commands and usage instructions. Output includes the list of commands, available flags and CLI usage examples. codex --version – Prints the current CLI version, e.g. Codex CLI v0.x. codex login – Logs in to an OpenAI account, obtains access permissions and stores authentication credentials locally. codex logout – Logs out, useful for switching accounts or clearing saved credentials. codex config – Views or modifies configuration settings such as the default model, API endpoint, output format and sandbox options. Common configuration items:

Default model

API configuration

Output format

Sandbox settings (if supported) codex update – Upgrades the CLI to the latest release, fixing bugs and adding new features. codex doctor – Checks the development environment for:

Node runtime

Network connectivity

Login status

Configuration correctness codex review – Performs AI‑assisted code review of the current project. Helps identify:

Bugs

Security issues

Performance problems

Style violations codex test – Generates or runs tests automatically. Supports multiple frameworks:

JUnit

pytest

Jest

Go Test

Example – generate a unit test for UserService :

codex test "为 UserService 编写单元测试"

codex fix

– Automatically fixes code problems such as compilation errors or static analysis warnings. Example – fix current compilation errors:

codex fix "修复当前编译错误"

codex commit

– Generates a conventional Git commit message. Example output: feat(user): add JWT authentication support Can be used directly with Git:

git commit -m "feat(user): add JWT authentication support"