Codex CLI

Codex CLI is OpenAI’s open source coding agent that runs locally in your terminal. It can read, change, and run code in the working directory through natural language prompts, and it’s the terminal surface of OpenAI’s broader Codex agent, which also runs in IDE extensions, in a desktop app, and in the cloud as Codex Web. Built in Rust, it supports code generation, debugging assistance, code review, and automation tasks, and it can call out to external tools over MCP or run non-interactively with codex exec for scripted and CI workflows.

For Python programmers, Codex CLI can help write scripts, fix errors, and provide real-time suggestions without having to leave the command line.

Official website: github.com/openai/codex

A person standing next to a machine labeled Codex CLI that processes code through a conveyor belt, with a terminal screen, colorful blocks, and buttons labeled Add, Delete, and Clear All.

Tutorial

How to Add Features to a Python Project With Codex CLI

Learn how to use Codex CLI to add features to Python projects via the terminal. Master AI-powered coding without needing a browser or IDE plugins.

intermediate ai tools

For additional information on related topics, take a look at the following resources:

By Leodanis Pozo Ramos • Updated July 31, 2026 • Reviewed by Martin Breuss
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