#ai-agent

10 results

Harness Engineering (2): Five Engineering Answers from OpenAI's Million-Line Experiment

Three OpenAI engineers, five months, one million lines of AI-generated code, zero hand-written. The real value of this experiment isn't the numbers — it's the proof that Harness design can be engineered. Five concrete practices: making the app legible to agents, treating the repo as the source of truth, mechanizing architectural constraints, rewriting merge philosophy, and background entropy management.

Harness Engineering (3): Industry Consensus, Four Pillars, and a Three-Phase Rollout

Distilling Harness Engineering from concept and benchmark case into something you can start executing today: the four fixed failure modes of Agents, the 40% context sweet spot, the four-pillar framework the industry has converged on, and a three-phase roadmap from 'this afternoon' to 'fully automated in two weeks' — closing with six industry consensus points and three still-unsolved problems.

Deep Dive

Engineering Lessons from Building Cursor: From VSCode Fork to $500M ARR

Cursor is an AI-powered code editor by Anysphere, built by four MIT graduates, that hit $500M ARR within two years of launch. This article distills the real engineering lessons they've shared publicly: why they forked VSCode instead of building an extension, how Tab prediction's latency engineering works, and the hard production lessons from shipping Agent Mode.