Codex MCP Go

Wraps the OpenAI Codex CLI behind an MCP stdio interface so agents like Claude, Gemini, or other model-driven coding tools can delegate specific tasks to Codex. Exposes a single `codex` tool that takes a prompt, working directory, and optional session ID for multi-turn context. Supports read-only, workspace-write, and full-access sandbox modes, plus image attachments and custom model selection. The repo includes Go source and an NPM wrapper for easy npx deployment. Built for workflows where a planning model handles architecture but calls out to Codex for tricky implementation, bug fixes, or code review steps that benefit from its specialized instruction-following.