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“The distilled model wasn’t just as good as the model+harness, it was noticeably better.” Harnesses are evolving as models absorb general scaffolding. They still handle what’s specific to your tools, data, users, and environment. Read the #Radar article by Laurie Voss: https://bit.ly/481XB0p

bit.lyAre agent harnesses dying? What harness distillation changes.Harness distillation can train general scaffolding into a model. The harness that remains is the part tied to your tools, data, users, and environment.

“You don’t need a Ferrari to manage your calendar.” — Raffi Krikorian Mozilla CTO Raffi Krikorian and @timoreilly.bsky.social explore open source AI, and building technology people can own and trust. Read here to learn more: https://bit.ly/3ULecCs

bit.lyOwners, Not Renters: Raffi Krikorian on Open Source AICreated by Claude with light editing by Tim O’ReillyRaffi Krikorian, Mozilla’s CTO, joined Tim O’Reilly at our recent AI Codecon to talk about open source

Your AI text can carry a watermark without adding a single hidden character. “There are no hidden characters placed inside the AI generated text, and no extra tokens are consumed.” Bruce Hopkins explains how it works in this #Radar article: https://bit.ly/3UHIAxx

oreilly.comThe Latest Anthropic Claude Models Contain AI Text Watermarks: What Does This Mean for You?If you’re an instructor for the O’Reilly live training platform, you’ve got to be prepared for the unexpected. As a developer I think we all can understand the

Curious about generative AI, but not sure where to start, especially if your role isn’t technical? Take the Generative AI at Work assessment to get a skill plan tailored to what you need to learn. Get started here: https://bit.ly/4ywJvyM

Feeling like your AI progress has stalled? Move beyond one-off wins and build repeatable workflows that help you execute better. Join O’Reilly’s Expert Showcase: Building AI Workflows That Stick on November 10. Register: https://bit.ly/47qyTXb

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On Dec 4 I'm joining Vicki Reyzelman on @oreilly.bsky.social's Beyond the Book to talk AI Agents with MCP: the core architecture, building servers and clients in Python, and agent designs that hold up as models change. Live Q&A, 10am ET / 7am PT.

What makes an architectural decision useful to an AI coding agent? “Retrieval finds; applicability governs.” Theo Valmis on why relevant context isn’t necessarily binding, and why guidance and enforcement need different roles. Read the #Radar article: https://bit.ly/4hLiken

bit.lyWhen Architecture Decisions Actually ApplyIn my previous Radar article, “Architectural Guardrails for AI-Generated Code,” I argued that AI coding agents need a layer that can hold architectural

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Heading to San Jose next week for the @aaif.io AGNTCon + MCPCon. I'm signing AI Agents with MCP at the @oreilly.bsky.social booth during Thursday's AM coffee break (10:10-10:35). I'll have 20-25 copies on hand, and I'll sign any you bring too. Come say hi!

“WebMCP gives web developers a standard way to publish structured tools to access the capabilities of their website enabling agents to call those functions with structured inputs.” How can websites work better for people and AI agents? Learn more: https://bit.ly/4zxRgpc

oreilly.comDesigning Websites for People and AI Agents with WebMCPThe following article originally appeared on the Agentic AI Foundation blog and is being reposted here with the author’s permission.Websites are designed

Are your engineering metrics measuring real value or just activity? Join Rachel James, O’Reilly's Engineering Director, for LeadDev’s Oct. 22 panel: “The truth about engineering team performance in 2026.” Register today: https://bit.ly/4rXSGX

“Prompt tuning and stronger models can improve the agent’s responses, but can’t provide guarantees for actions.” Reliable agents need enforceable policies, narrowly scoped authority, and recoverable state. Read Angie Jones’s #Radar article: https://bit.ly/4j1doDe

bit.lyHow to Build Reliable AI Agent Systems for ProductionThe following article was originally published on the Agentic AI Foundation blog site and is being republished here with the author’s permission.A

We'll be at Gartner IT Symposium/Xpo in Orlando, Florida, October 19–22, talking with technology leaders about the skills their teams need to keep pace with AI. Add the O'Reilly booth to your agenda and bring your questions.