I break down every loop type from scratch—what a heartbeat, cron, hook, and goal loop actually are, when each one fits, and the five things any effective loop needs before it touches production. Then I build two live loops: a daily aging-PR reviewer in Claude Code that schedules itself at 10:15 a.m. and spins off its own subagents, and a weekly skills-identification loop in Codex that spawns goal-based subagents to validate its own output in real time.

What you’ll learn:

• The plain-English definition of a loop—and why it’s just an automated prompt, not a scary new paradigm

• The four loop types (heartbeat, cron, hook, and goal) and when each one actually fits your workflow

• How to think about loop design using the “onboarding an employee” mental model

• The five things every effective loop needs: work trees, skills, plugins/connectors, subagents, and state tracking

• How to build a scheduled PR-review routine in Claude Code that babysits aging PRs and alerts your team

• ow to set up a weekly skills-identification automation in Codex that spawns its own validating subagents

• Why goal-based loops are the hardest to write well—and where most people burn tokens for nothing

• The two warning signs that your loop is going to get expensive before it gets useful

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In this episode, we cover:

(00:00) Prompts are out and loops are in

(02:30) Defining a loop

(03:03) The four ways to automate a prompt: heartbeat, cron, hooks, and goals

(06:03) Five things every effective loop needs

(09:26) The “onboarding an employee” framework for designing loops

(11:58) Live build #1: Daily aging PR loop in Claude Code

(17:08) Subagents inside loops

(19:00) Live build #2: Weekly skills identification loop in Codex

(22:57) Watching subagents spin up in real time

(25:28) Warning signals around loops

(27:31) What listeners are doing with loops

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Tools referenced:

• Claude Code: https://claude.ai/code

• Codex: https://chatgpt.com/codex

• OpenClaw: https://openclaw.ai/

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Other references:

• Claire’s article “Why OpenClaw Feels Alive Even Though It’s Not”: https://x.com/clairevo/article/2017741569521271175

• Addy Osmani’s article on loop engineering: https://addyosmani.com/blog/loop-engineering/

• Using Goals in Codex: https://developers.openai.com/cookbook/examples/codex/using_goals_in_codex

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Where to find Claire Vo:

ChatPRD: https://www.chatprd.ai/

Website: https://clairevo.com/

LinkedIn: https://www.linkedin.com/in/clairevo/

X: https://x.com/clairevo

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Production and marketing by https://penname.co/. For inquiries about sponsoring the podcast, email jordan@penname.co.

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How to design AI agent loops: schedules, goals, and subagents in Claude Code and Codex

How I AI (private feed for [email protected])

How to design AI agent loops: schedules, goals, and subagents in Claude Code and Codex