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OpenAI's Codex CLI

OpenAI's Codex CLI is the best way to run a GPT-5-powered agent.

Code Demo Cerebral Valley

Core trick

Wraps a forked terminal coding agent in a TypeScript SDK so agents can be spawned and driven from code.

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dev toolsagents

Description

OpenAI's Codex CLI is the best way to run a GPT-5-powered agent. But there is no SDK to run it programmatically, like there is for Claude Code. We forked OpenAI Codex and built a TypeScript SDK, so that GPT-5-powered agents can be spun up using code. We then used the SDK to power our AI agent, Locadex, which does internationalization in complex codebases using GPT-5.

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