OpenAI Codex CLI Trends at 5,800 Stars — Terminal-Native Coding Agent With Sandboxed Execution Ships as Open Source

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OpenAI's codex-cli delivers a terminal-native coding agent with sandboxed code execution, reaching 5,800+ stars on GitHub. The CLI lets developers run OpenAI models as autonomous coding agents directly in the terminal with built-in safety guardrails — commands execute in isolated sandboxes rather than directly on the host system. Positions OpenAI in the Claude Code/Kilo Code competitive space with a lighter-weight, open-source entry point.