Application
Coding
Codex CLI
1OpenAI's 2coding 3agent 4for 5your 6terminal
the six Ws · specification
W1
Who
Maintained by OpenAI.
W2
What
A lightweight coding agent that runs in your terminal.
W3
Where
A CLI on your machine, operating on local files.
W4
When
When you want an OpenAI-driven agent in the terminal.
W5
Why
Local, scriptable coding assistance from OpenAI models.
W6
With
An OpenAI API key or sign-in, and your terminal.
W7
Watch
Vendor-maintained (OpenAI); open-source (Apache-2.0) client. Runs locally but sends prompts and file context to OpenAI; can edit files and run commands with approval.
alternatives