Architecture of an autonomous startup-idea generator (Python, Pydantic AI, Gemini, Postgres)

Originally published on December 28, 2025. This is a living document and serves as the current architecture breakdown for the GammaVibe pipeline. It was last updated on March 16, 2026. Jump to the changelog at the bottom to see what's new. Every morning, my AI pipeline wakes up, ingests hundreds of news articles, identifies business opportunities hiding in the noise, and publishes a newsletter — without any human intervention. Here's how I built it. What This Project Does Gamma Vibe is a daily newsletter that synthesizes news into actionable startup opportunities. The challenge: take a firehose of raw news and transform it into curated, high-quality business insights that readers actually want to read. The pipeline handles everything: fetching news, filtering out noise, extracting business signals, synthesizing themes, generating visuals, writing the content, running quality checks, and publishing to Ghost CMS. Ten steps ( Update: actually closer to 20 now; the pipeline has been steadi