Newsletter · Weekdays & Sundays

The Agentic Brief

Agentic AI in four minutes a morning. Curated by a pipeline I built, reviewed by me before it goes out.

Three pipes enter the frame from different sides, each carrying a short paper strip with a few words on it. The pipes meet at a funnel, and past it the three strips lie end to end on one band whose words run in a continuous line toward a small open door.

Today's daily

Split an MCP injection across two channels and resistant models leak at 100%

Plus: reward hacking at 57.2% of rollouts, and Exa searches the web by date. 5 min.

Sep 18, 2026 · 5 min

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  • Sundays, an argued synthesis rather than a recap.
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Every weekday a pipeline reads 82 feeds, the Hacker News stories that clear 80 points, 15 company engineering blogs, and 12 accounts on X. It picks the one story that changed something, writes it up with the caveat attached rather than buried, and lines six to nine items up behind it. Then it stops.

On Sunday it does the thing a daily structurally can't. One argued observation connecting the week's stories, the items whose significance only showed up in hindsight, and the two or three good things that nobody clicked. It ships at the same time every weekday because software doesn't oversleep, it says so out loud when the day was quiet instead of padding, and every issue carries a corrections section whether or not there is anything in it. What it reads, which model does which job, and what I check before a send are all written down on the how-it-works page.

This week's weekly

The score and the job came apart

Plus: a 1983 paper that explains this week, and a privacy leak nobody has confirmed. 8 min.

Aug 10 to Aug 16, 2026 · 8 min

A tall measuring stick stands alone on a rolling plain while a small figure at its base looks away from it toward a tangle of forking paths that run off into the distance.

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