The name is the button.

An agent writes the code now, and a human thumb hovers over Accept all a hundred times a day. The honest question of this decade is what, exactly, you just accepted. So I read the diff.

Eight years as a backend engineer in Stockholm, back in Tokyo since 2023, and I still ship something small most nights, usually badly. My one rule: the only real review of a model is the thing you built with it. That is why there is no leaderboard on this site.

Around a hundred and forty sources come through — the labs' own posts, the papers, the tools, the runtimes and languages nobody is watching yet, the chip under the demo, and the newsletters people actually forward. What is moving gets counted so the week reads at a glance, and every few days I explain one mechanism in plain words.

A story here is a headline, a short excerpt, one image and the link to whoever wrote it. We never reproduce the post; the images belong to their authors. A post written in Japanese appears in Japanese, exactly as it was published, and the link goes to the original.

— Yuki Halvorsen, Tokyo

← Accept All Archive

LobstersGitHub

HarnessTax: How Much Does the Harness Matter for Coding Agents?

September 17

Comments

Agents & vibe coding vibecoding

Read at Lobsters ↗

ValleyYour startup’s next teammate might be an AI agent: Gusto, Insight Partners, and Leland explain what that changes at TechCrunch Disrupt 2026 TechCrunch AI

One letter a week, in your inbox.

Latest

HarnessTax: How Much Does the Harness Matter for Coding Agents?

Related

ValleyRival AI agents, Instinct and Meta’s Muse, both add the ability to make calls TechCrunch AI

EuropeMagentic raises $18M to automate industrial operations with AI agents Tech.eu

ValleyStates prep for ICE agents to be at polls, just in case Axios Technology

ValleyYour startup’s next teammate might be an AI agent: Gusto, Insight Partners, and Leland explain what that changes at TechCrunch Disrupt 2026 TechCrunch AI

AsiaHuawei Maps Intelligent World 2035 Around Agent Token Traffic and Ten Tech Directions Pandaily

GitHubMigrating the GitHub Copilot runtime to Rust, using Copilot GitHub Blog