coding
Codex CLI
by OpenAI
Codex CLI is OpenAI's open-source command-line coding agent that runs directly in the terminal, capable of reading and writing files, executing shell commands, and performing multi-step coding tasks autonomously. It supports multiple approval modes (suggest, auto-edit, full-auto) and acts as an MCP client, integrating with a growing ecosystem of tools and servers. Originally launched in April 2025, it received a major model upgrade to GPT-5.2-Codex in December 2025 and expanded to a desktop app in February 2026.
8 Overall Score
Scores
Capability 8
Ease of Use 7
Documentation 8
Reliability 7
Value 8
Momentum 9
Details
- Status
- active
- Pricing
- open-source
- Launch Date
- Website
- https://github.com/openai/codex
- Last Updated
Key Features
- Multi-file reading and editing directly in the terminal
- Shell command execution with configurable sandboxing
- Three approval modes: suggest, auto-edit, and full-auto
- MCP client support for tool and server integrations
- Desktop app companion (released February 2026)