Codex CLI

Codex CLI is OpenAI's official coding agent that runs locally in your terminal. It provides a TUI, supports ChatGPT OAuth or API key auth, includes MCP client/server capabilities, and uses OS-level sandboxing (Seatbelt on macOS, Landlock on Linux) for safe command execution. Best for developers in the OpenAI ecosystem who want a Claude Code alternative.

AI ToolFree Tier: Free with ChatGPT subscription; pay-per-use with API keyCompany: OpenAICategory: CLI ToolsOpen Source: YesQuick Start: npm install -g @openai/codex → codex → Sign in with ChatGPT or set OPENAI_API_KEY → Describe a task to start coding

Codex CLI

OpenAI's terminal coding agent — sandboxed execution, MCP support, ChatGPT OAuth

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Codex CLI is OpenAI's official coding agent that runs locally in your terminal. It provides a TUI, supports ChatGPT OAuth or API key auth, includes MCP client/server capabilities, and uses OS-level sandboxing (Seatbelt on macOS, Landlock on Linux) for safe command execution. Best for developers in the OpenAI ecosystem who want a Claude Code alternative.

FREE TIER
Free with ChatGPT subscription; pay-per-use with API key
COMPANY
OpenAI
CATEGORY
CLI Tools › Coding Agents
OPEN SOURCE
Yes
PRIVACY
OS-level sandboxing; local execution
TAGS
codingopenaimcpsandboxcli

QUICK START

npm install -g @openai/codex → codex → Sign in with ChatGPT or set OPENAI_API_KEY → Describe a task to start coding

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