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The Calum Johnson Show
AI Insider: The Simplest Way To Use Codex In Your Business, Content & Life (For Beginners)
⏱ 93 min video · 3 min read1 Jun 2026Worth watching
TL;DR
Mike, a backend engineer and YouTuber with deep AI tooling experience, walks through how beginners can use OpenAI Codex to build genuinely productive AI agent workflows. The core argument is that simplicity beats complexity, and that treating the AI like a low-agency junior employee who needs step-by-step instructions is the key to getting useful outputs.
Key points
1
Simplicity wins over complex multi-agent setups: most people fail with AI agents because they copy elaborate workflows that look impressive but do not match their actual needs
2
Models are not human and do not think like humans — they predict tokens mathematically, so vague or casual prompts produce poor outputs; explicit, step-by-step instructions are essential
3
OpenAI Codex is recommended over Claude Code right now because OpenAI has increased rate limits and compute subsidies while Anthropic has recently cut them, giving more value per dollar
4
Composio (composio.dev) is the key integration tool that acts as a middleware layer, connecting Codex to thousands of third-party apps like YouTube, Gmail, Notion, and cal.com without sharing passwords
5
The best workflow candidates are tasks that are either frequently repeated (checking emails for sponsors, generating reports) or involve scattered data that can be aggregated into actionable insights
Actionable insights
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Go to openai.com/codex, install the desktop app, and connect Composio by pasting your Composio API key into the chat and telling it to use Composio to connect to external tools
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Write prompts as if instructing a highly capable but zero-agency junior employee: break every task into numbered steps (e.g. get YouTube views, get link clicks, calculate CTR, generate HTML report) rather than giving one-liner instructions
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Identify your first workflow by asking: what task do I repeat often, or where do I have data scattered across multiple tools that I never synthesise? Start there rather than copying someone else's agent architecture
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Use Codex plugins for mainstream integrations (Gmail, Notion, spreadsheets) and Composio for anything niche or not in the official plugin directory
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If you lack motivation to start, open Codex and build any random small app first — the dopamine hit from seeing something functional will drive continued use
Notable quotes
“There's what looks cool and there's what works. And what works oftentimes is boring.”
“When people say they had bad workflows or bad outputs, it's because we're relying on the model to be like us. It's not.”
“For $20 a month, I have PhD level intelligence in front of me — and it would be such a bummer to not take advantage of this.”
Worth watching?
✅
Worth watching the full video?
Watch if you want a live screen-share walkthrough of setting up Codex and Composio from scratch — the core concepts and tool recommendations are all captured here, but seeing the actual interface navigation adds useful context.
Saved you some time? The creator still deserves a like.
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