Same Framework, Different Engine: Porting AI Coding Workflows from Claude Code to Codex CLI

TL;DR I built a sub-agent workflow framework for Claude Code that solved context exhaustion through specialized agents and structured workflows For 8 months, Codex CLI had no sub-agents — the framework was Claude Code-only Codex finally shipped sub-agent support — I expected days of migration, it took an afternoon What surprised me most: if you design workflows around agent roles and context separation rather than tool-specific features, your investment survives platform shifts The 8-Month Wait Back in July 2025, I released the first version of this workflow as a Claude Code boilerplate. By October 2025, it had evolved into a full sub-agent framework — specialized agents for every phase of development, from requirements analysis through TDD implementation through quality gates. The idea was pretty simple: break complex coding tasks into specialized roles (requirement analyzer, technical designer, task executor, quality fixer...), give each agent a fresh context, and orchestrate them th