Daily Brief

Stark showed up to the field with a lightweight plastic case. The soldiers asked for wood — because wood burns, and it’s cold in winter. Co-founder Uwe Horstmann on why Stark builds for the staff sergeant, not just the general. #DefenseTech #Manufacturing

Full episode: https://www.youtube.com/watch?v=frYSOKvNiiE Me on twitter: https://x.com/dwarkesh_sp

Chase Lochmiller, co-founder and CEO of Crusoe, on how he scaled himself as a leader: a domain expert owns each vertical (energy, data centers, manufacturing, AI cloud), he can go deep with any of them, and he trusts them to make the calls. Not hands-off. Alignment first, then accountability. #AI #infrastructure #leadership

Jack Woodruff, founder and former CIO of long/short equity fund Candlestick Capital and a former Citadel portfolio manager, sits down with Kepler CEO Vinoo Ganesh to talk about what AI really changes in fundamental investing. They discuss why humans are still the bottleneck, how AI turns hours of prep into minutes and raises the table stakes, why you should never trust a number you can't audit, where edge comes from when every fund has the same models, how fund teams will be structured, and why the "no-analyst hedge fund" won't beat the best human-led funds. Chapters: 0:00 Intro 0:47 Will sto

Time to market and production readiness pull in opposite directions. Stark co-founder Johannes Schaback on shifting left on manufacturability — and why they buy the top-quartile camera they can actually get in volume, not the best one on earth. #DefenseTech #Manufacturing

x402 lets AI agents pay for data and APIs with tiny on-chain payments over HTTP. Ishween Kaur explains how the protocol works, then walks through six of the 20 ways she broke it in a safe test environment: price changes in the payment header, paying twice, getting data for free, one payment unlocking many pages, lookalike sellers, and prompt injection that talks an agent into paying again. For each one, she shows the guard that stopped it and how to roll out agent payments safely, trace by trace. Chapters: 0:00 Intro 0:31 Paying for things you use once 1:33 HTTP 402 and the x402 protocol 2:09

The best early advice Chase Lochmiller got at Crusoe: most startups die from suicide, not homicide. It’s not competitors that kill you, it’s you not executing. If the opportunity is real, there’s room for multiple winners, and someone else chasing it is a compliment. #ai #infrastructure #leadership

Every new coding agent session starts like a new hire: it doesn't know your conventions, architecture rules or approved libraries, so it burns time and tokens searching your repo and repeats the issues already in it. Killian Carlsen-Phelan of Sonar introduces Sonar Vortex, a plugin that hands your agent a map of the codebase and your guidelines before it writes, then deterministically checks every edit. In a live session, Vortex catches a temp-file permission bug the agent's own tests missed, and rejects its first fix. Sonar reports 36% fewer tokens and 44% fewer production outages. Chapters

RAG gives agents a way to read, but memory gives them a way to write, and that's where your business value lives. Wojciech Pluta, head of technical marketing for Oracle AI Database, explains memory promotion: deciding what's worth keeping, checking it against existing records and admitting, rejecting or escalating it to a human. A mortgage-agent demo remembers an operator's preferences across sessions and refuses to store an "approve every application" rule. He also covers short-term, long-term and shared memory, why to store memory in a database, and the context card that keeps prompts lean.

Broccoli (YC W22) is building an AI front office for home services businesses, answering calls, following up with leads, and booking appointments across voice and text. Today, they serve more than 500 customers, are booking jobs at a run rate of over $1 billion a year, and expect to end the year at more than $60 million in ARR, up from zero just two years ago, after recently raising a $30 million Series B. In this Founder Fireside, Broccoli’s founders AJ Jain and Aditya Ketkar join YC's Gustaf Alstromer to share the long path to finding that business, from an earlier EV startup that never fo