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Engineering notes on Rails, Ruby, AI and testing, and guides for founders who work with engineers.

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aifounderincident

An AI Agent Deleted a TV Show's Whole Season

Five weeks before its premiere, The Challenge Sverige lost its edited season to an AI agent on the production server. Here's what founders can take from it.

· JetThoughts
aisecurityfounder

Anthropic: AI Worms Are Months Away

Anthropic's red team showed small AI models hopping between $55 Android TV boxes. No rogue worm exists yet. Here's what the experiment does and doesn't prove.

· JetThoughts
aisecurityfounder

MCP's Command Execution Flaw Is 'By Design'

OX Security found 200,000 MCP servers exposed to command execution, and Anthropic says the behavior is intended. Here's what to check if your team runs MCP.

· JetThoughts
aidevelopmentfounder

Stack Overflow 2026: Devs Verify AI Code

Claude Code passed GitHub Copilot in Stack Overflow's 2026 survey, and 76.5% of developers run AI output locally before using it. Only 9.6% use it as-is.

· JetThoughts
railsstartupengineering

Should You Let Them Build It in Rails?

You cannot judge a framework you cannot read, and comparing frameworks across ecosystems mostly produces noise. Here is what a non-technical founder can actually check when someone proposes Ruby on Rails.

· Paul Keen
aiagentsengineering

Autonomous Agent Teams Are Real. Measured Success Runs 13% to 59%.

Six multi-agent frameworks, measured across coding and reasoning benchmarks. Then the pattern both the loudest sceptic and the loudest proponent ended up agreeing on: many agents may think, one agent writes.

· Paul Keen
foundersnon-technical-founderprototyping

Have an App Idea? Here's Where to Start

Turn your app idea into a clear concept and a small prototype. A practical guide for non-technical founders, with rough sketches and AI prompts you can copy.

· Paul Keen
aiengineeringcode-review

"Generate Then Verify" Moved Your Work. It Didn't Remove It.

81% of engineering teams report spending more time in code review since adopting AI tools. The advice assumes checking is the cheap half. Measurement says that is where the hours went.

· Paul Keen
aicode-reviewstartup

Your AI Reviewer Approved It. Did It Read Its Own Report?

Our AI code reviewer found a SQL injection, described it accurately, and set the verdict to approve in the same response. Here is what we changed.

aistartupcode-review

Your Dev Shop Says the Code Was Reviewed. By What?

Copilot now takes part in more than one in five code reviews on GitHub. The research says AI reviewers earn their keep - and that the tuning which makes them usable suppressed about a fifth of real vulnerabilities on a standard benchmark.

· Paul Keen

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Paul KeenChief Technology Officer & Open Source Contributor

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