Rachel Stein

Rachel Stein writes about data pipelines, evaluation, and the unglamorous plumbing of AI systems. She is drawn to the parts of the stack that break quietly and expensively.

Features by Rachel Stein

muxuuu/serenity-skill · 18 Jun 2026

A Supply Chain Skeptic’s Agent Skill for LLM Research

Serenity.skill encodes a public equity research methodology into a portable agent framework, forcing language models to decompose industry chains, identify bottlenecks, and validate claims against regulatory filings rather than social media narrative.

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