Bret Fisher

Bret Fisher

@bretfisher.com

Docker Captain 🐳 & Cloud Native Ambassador ⎈ Maker of best selling courses 👨‍🏫 Beach life 🏖 | Navy vet ⚓️ AI in CI https://agenticdevops.pro Stream https://bret.live Discord https://devops.fan Newsletter https://bret.news Links https://bretfisher.com/start

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Bret Fisher
@bretfisher.com

Big announcement: The Agentic DevOps Guild is open! It's an AI+DevOps all-in-one learning accelerator of courses, meetups, and community. Helping people adopt agents in #DevOps, #platformengineering, and #SRE is all I think about now 😂. I missed #kubecon to launch this 😭 www.bretfisher.com/theguild

bretfisher.comJoin the Agentic DevOps Guild, from Bret FisherWhere LLMs, AI Agents, and MCP tools meet DevOps. Stay at the top of your DevOps game during the AI transition by gaining access to all Bret's agentic DevOps and CI/CD content, along with an exclusive...
Bret Fisher
@bretfisher.com

Learning live stream: how to fix your #Kubernetes resource over-provisioning and maybe win some AirPods: Cast AI joins me to discuss and demo ways to automate node and pod resource optimization. Sign up, watch live or the recording, and enter the raffle for AirPods Pro 3 here cast.ai/webinars/wor...

Bret Fisher
@bretfisher.com

Cool paper from @markrussinovich.bsky.social on preventing prompt injection of tool results by tweaking "model activations" via inference server middleware (beyond my understanding; math is hard.) It somehow causes model to think the text is data not instructions arxiv.org/abs/2609.365...

arxiv.orgCounterSteer: Suppressing Indirect Prompt Injection with Activation SteeringIndirect prompt injection makes an LLM agent treat untrusted retrieved text as instructions. We present CounterSteer, an inference-time defense that suppresses this behavior inside the model. Per mode...
Bret Fisher
@bretfisher.com

Doing the work of evaling my badass GitHub Actions skill then tweaking, then eval, then tweak, ♾ to prove that my skill works even on Haiku, which is the shittiest of all the models now

Bret Fisher
@bretfisher.com

WE LIVE! www.youtube.com/watch?v=Vka1...

youtube.comOn Stream: CI/CD via agent tools: Skills, CLIs, MCP, and more with SemaphoreYouTube video by Bret Fisher
Bret Fisher@bretfisher.com

What does an AI-native CI look like, and how can you get there? The Semaphore team joins me to talk about their focus on making your agent harness the gateway to testing, fixing, and deploying your code. www.youtube.com/watch?v=Vka1...

youtube.comOn Stream: CI/CD via agent tools: Skills, CLIs, MCP, and more with SemaphoreYouTube video by Bret Fisher
Bret Fisher
@bretfisher.com

My #GitHub Actions Security Hardening workshop is free next week. Months of research and tool-making resulted in a 2-hour event that shows you where your repos are lacking in security for your workflows, and how to fix them www.bretfisher.com/gasa-workshop

bretfisher.comGitHub Actions Security Workshop, Sponsored by ChainguardHarden your GitHub workflows and repos from the most common supply chain attacks. A hands-on workshop taught by Cloud Native Ambassador and Docker Captain Bret Fisher.
Bret Fisher
@bretfisher.com

We knew the tokens were subsidized. We used Opus with glee. Now we get to add cost as the next dimension to this already complex equation, which carries a non-zero risk of costing more than it’s worth to implement

Ed Zitron@edzitron.com

Today Microsoft moved all its GitHub copilot subscribers to token-based billing. If you want to see what happens when people have to pay the actual costs of AI, the day is finally here. It's obvious that every customer sees the deep, meaningful value and isn't angry at all.

Bret Fisher
@bretfisher.com

One of my favorite quirks of Opus (all LLM models?) is how they voluntarily estimate labor time, saying "Cost of this feature: Small. Half-day of...." and I'm thinking, bro... you and I both know you'll be done in 5 minutes, stop the humble brag

Bret Fisher
@bretfisher.com

/me Reminds myself again that we're living through an incredible moment in our software careers, and to take a minute, lean back, and be present in the chaos that we will tell tales of in a decade or two. Every day could have moments of eureka, dread... or both, and that's a rare experience in life

Bret Fisher
@bretfisher.com

I shipped 4 more videos on how different agent harnesses deal with AGENTS and CLAUDE md files. The Agentic DevOps guild has now had 8 weeks of meetups with ~40 engineers representing their teams in adopting AI in CI and platform engineering roles www.bretfisher.com/theguild

bretfisher.comJoin the Agentic DevOps Guild, from Bret FisherWhere LLMs, AI Agents, and MCP tools meet DevOps. Stay at the top of your DevOps game during the AI transition by gaining access to all Bret's agentic DevOps and CI/CD content, along with an exclusive...
Bret Fisher
@bretfisher.com

Which is more active and more authentic at #kubecon, X or Bluesky? I asked Claude for analysis of last two days. Across both, 2/3rd of posts are corporate accounts or humans promoting, with 1/3rd being genuine experiences and shared learnings. X has more posts, but Bluesky has more "real humans"