Codex Subagents Guide Keeps Threads Clean

The sharpest insight here is that subagents are really a hygiene feature for agentic coding, not just a parallelism trick. They help Codex stay useful by preventing logs, stack traces, and half-baked exploration from burying the actual decision trail.

• –Codex’s built-in `worker` and `explorer` roles make the pattern practical, not theoretical
• –Returning summaries instead of raw output preserves context for the main thread
• –The model works best when work can be split into independent chunks, like reviews, exploration, or multi-step implementation
• –There’s a real tradeoff: more subagents means more token spend and more coordination overhead
• –This is a strong tutorial for teams adopting agent workflows, because it explains the “why” behind delegation, not just the “how”