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The Data Letter helps senior managers, technical builders, and operators use AI and data systems to reduce friction and run complex work more effectively. Subscribe for your free AI Readiness Checklist.

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Substack
PricingFreemiumPublishesTwice weekly
Issues97Foundeda year agoLast Issue7 days ago
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Latest Issues

Use Langfuse for AI Agent Observability and Catch Mistakes Early

Set up logging, tracing, and approval gates with Langfuse, so you can see every step your agent takes and stop it before it runs an action you didn’t approve.

Last Sunday, I told you I’d show you how to see what your agents are doing while...

7 days ago
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AI Agent Observability, or How to Catch a Bad Agent on Run 1

An AI agent can finish every task you give it and still be doing the wrong thing to get there. When normal software encounters an issue, it breaks, and that break tells you to go fix it. When an agent hits an error, it keeps running and fin...

8 days ago
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How to Make Yourself the Person Your Company Can’t Replace

Score any internal tool your teams build and own the decision your company keeps skipping

Remember the product manager from this week’s live? Another department stopped going through him and his engineering team. They brought in a contract...

14 days ago
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How to Tell Which Parts of Your Analyst Job AI Will Take First

Thanks to , , and everyone else who showed up today!

Earlier this week, I was reading about a product manager whose company brought someone in to sit with one of their departments and build tools for them directly, fast, with AI. Without t...

16 days ago
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How Uber Kept AI Spend Flat Through a 9.4x Increase in Requests

Follow-up to Why Cheaper AI Is Making Your Company’s Bill Bigger: Tokens, Compute and Hidden Bills

Happy Labor Day long weekend to our American and Canadian friends! I hope you are on a boat on a lake.

21 days ago
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  • Hodman | How To Build With AI

    Builds With AI | I write about execution friction, for ND workers (Between Thinking and Doing) and teams rolling out AI (The Data Letter)

  • Pipeline to Insights

    Helping you understand data engineering and AI in simple words, with hands-on tutorials, interview prep, and tips to break in and become a better engineer.

  • Wyndo

    AI Operator & Maker \ud83d\udee0️ || Sharing optimistic view how to build smarter, work faster, and live better—with AI || Building AI Maker & Agentic Academy most of the time.

  • Dheeraj Sharma

    I help non-technical founders and creators build AI automation systems that grow revenue without growing workload. 20 years of enterprise engineering, now in plain English. I share just what works. Claude Code, Cowork, n8n, Codex and ChatGPT

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