Seventeen-year Ruby veteran Justin Bowen joins hosts Valentino Stoll and Joe Leo to unveil Active Agent—a Rails-native framework that treats every agent like a controller and every prompt like a view, letting you weave LLMs, vector search, and business logic straight into MVC.The crew also digs into the real-world mechanics of shipping AI: defining ground-truth datasets, replay-ready evaluation harnesses, and tight retry logic that keeps hallucinations out of production. You’ll hear a candid take on the current hype cycle (and its parallels to crypto), the challenges of long-term gem maintenance, and fresh ways to keep open-source sustainable—think GitHub Sponsors, corporate grants, and pro-tier gems.What you’ll hearActive Agent 101 – agents as abstract controllers, templated prompts as viewsTesting in the wild – fingerprints, VCR cassettes & CI pipelines for non-deterministic codeContext is king – why ground truth matters when counting cows or parsing legal docsOSS meets ROI – balancing passion projects with sustainable monetisationRails vs. Python/Next.js – reclaiming the one-person startup stackCommunity fuel – Discords, hackathons, and the push for academic & corporate sponsorshipMentioned In The Show:Active Agent (GitHub)  – Justin’s Rails-native, agent-oriented framework for building AI features. Vercel AI SDK  – TypeScript toolkit whose generative-UI ideas helped inspire Active Agent. Maestra.ai  – YC W24 startup offering AI transcription, dubbing, and hosted agent runtimes.Matz's 2025 Ruby Kaigi AI Keynote ONNX Runtime Ruby  – Gem that runs ONNX models (CPU/GPU) from Ruby. PGVector gem  – Ruby bindings for PostgreSQL’s pgvector extension (embeddings storage). Neighbor gem  – k-NN / ANN vector search for Rails & Postgres—pairs nicely with PGVector.Hugging Face JS – Run models in the browser with WebGPU and ONNX  Hugging Face Spaces  – No-config platform for hosting ML demos; handy for sharing agent prototypes. LangSmith (LangChain)  – Evaluation & observability service discussed as a monetization model. CrewAI (GitHub)  – Python framework for orchestrating multi-agent “crews”; Joe’s current go-to. Honeybadger  – Rails-first error-monitoring SaaS—an inspiration for future Active Agent services.Rising Impact – A Netflix anime special about a third-grader's journey to be the world's best golfer. Osmo AI  – Google-born startup using AI to digitise smell—cited in the show’s “AI hype” chat. Ruby AI Builders Discord  – Public Discord community for Rubyists building AI apps.

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