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How to Write AI Agent Loops in Claude Code and Codex
Lennys Newsletter·June 22, 2026
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Summary
Weekly How I AI roundup includes an episode on writing AI agent loops in Claude Code and Codex — practical guidance on structuring agentic workflows that actually complete tasks reliably.
Why this signal
Agent loop design (how to structure loops so agents don't spin, hallucinate, or go out of scope) is a direct gap for Thomas Engineering. Claude Code is already in daily use — concrete patterns for agent loops are immediately applicable.
Original email
Lennys Newsletter · 6/22/2026
🎙️ How I AI: How to write AI agent loops in Claude Code and Codex + How Claude Mythos found a 15-year-old bug in …