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Did 3 months just feel like 3 years?

Mar 09, 2026

No, this newsletter wasn't broken, I was just heads-down working on a bunch of stuff for you 🥳. Expect a big increase in newsletters as I catch you up with a new series of releases.

(Notice the newsletter is coming from my new webhost, with email bretfisher@y.kajabimail.net)

There's been a shift in the quality of the frontier AI models since November (starting with Claude Opus 4.5) that has all my friends talking. If it were even possible, the rate of change feels like it's shifted into a higher gear over the last three months.  I'll be talking more about this in one of the next few emails, but it's a good and bad situation in many ways.

For this email, let's just get you caught up with my content releases.

Recently on the Podcasts

We've got a podcast backlog that we're catching up on editing.

AI Wins and Misses for 2025

AI Wins and Misses for 2025

Viktor Farcic of ‪@DevOpsToolkit‬ and Nirmal Mehta join me to discuss our most loved (and some discarded) tools from 2025. We look into t...

youtu.be

Your Images are out of date (probably) - The silent rebuilds problem

Your Images Are Out of Date (probably) - The Silent Rebuilds p...

Container base images (like Official Docker Hub images) are often updated without new tag versions. I call this Silent Rebuilds. There's ...

youtu.be

Recently on the Live Stream (Thursdays)

On Stream: AI in my CI
On Stream: Opencode with GitHub Copilot
On Stream: Prevent GitHub Actions Attacks

OK, that was short and sweet, wasn't it! I'm back in the studio recording GitHub Action videos, so you'll see more about that soon.

Bret

 

Agents Are Changing Everything, So Where Do We Focus?
While the agent harnesses iterate, I think it's time to focus on the other core principles of agent harnesses: Skills + Tools + MCP. A few years ago, I felt like every dev or ops tool added AI in its name or description, yet it was mostly hype, and the word AI had lost its meaning. Then MCP came along, and I wasn't convinced that everything needed an MCP endpoint (still debated, but I think MC...
Agentic Workflows Are Here
Recent happenings: I streamed with the Semaphore team on how they are making their CI/CD platform "ai-native" and what that really means. They've got a claude/codex plugin system that comes with a CLI, skills, and MCP for controlling your CI. Podcast coming soon. I streamed with the co-founder of nono.sh, my go-to agent sandboxing tool, that can now, more or less, sandbox anything on Linux and...
My GitHub Security Hardening workshop is free next week
Sign up for my live hands-on workshop that's on Tuesday. I've been working on it for months, then I spoke about it at the Accelerate Chicago conference last month, and I finally get to bring it to you wonderful people. I found this content so useful for my own repos and orgs, that I created an open-source tool to complement the training and help you harden your repositories and find where you ...

Cloud Native DevOps

CNDO is a weekly-ish email from Bret Fisher on content he's creating. Agentic DevOps, automation, containers, Docker, Kubernetes, GitOps, GitHub Actions, and everything cloud native.
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