Framework · 8 notes · discussed by Lenny Rachitsky, Teresa Torres, Marty Cagan

Model Context Protocol

Every note in the archive that names Model Context Protocol: summaries, key takeaways and links to the original essays, episodes and posts. Ask a question below to get a cited answer from just these notes’ authors.

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Lenny’s Newsletter♥ 578

How to build AI product sense

Feb 3, 2026 · 34 min
Subscriber post — summary only

Tal and Aman argue that the fastest way to build intuition for AI products is to use coding agents like Cursor for non-technical product work rather than consumer chat tools. The post walks readers through setup, model…

Lenny’s Newsletter♥ 528

An AI glossary

Jun 24, 2025 · 14 min
Subscriber post — summary only

A glossary explaining 20+ common AI terms in simple language, from models and LLMs to transformers, training, RLHF, RAG, evals, agents, and hallucinations. It aims to help readers follow AI conversations in meetings and…

SVPG · Marty CaganAug 18, 2025

Build vs Buy in the Age of AI

Aug 18, 2025 · 6 min

Cagan argues that the build-versus-buy question, long familiar in IT and product teams, is being reshaped by generative AI and user-programming tools like Lovable and Bolt. Despite hype that everyone will build and SaaS…

Lenny’s Newsletter♥ 328

How top PMs increase their leverage with AI

Jun 30, 2026 · 13 min
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Lenny Rachitsky, introducing a guest post by Colin on AI leverage for product managers, argues that PM work is shifting from coordination toward hands-on building with AI. The post lays out three ladders of leverage…