Courses

Courses

Each course is an ordered build. Every episode assumes the previous ones, so read them in order, the code in part nine is the code from part four with the mode gate added, not a fresh example. Written for engineers who intend to run what they build.

• Course · 12 parts

  Build a Cursor-style AI coding agent in your terminal

  A twelve-part build of a terminal coding agent with the Claude Agent SDK. Commander, Chalk, a doctor pre-flight, streamed agent turns, permission modes and a global pnpm install.

  12 of 12 parts published · start with part 1

These are written against Sentinel, the open source agent in this repository, so every command and file path in them is one you can run and check. The docs are the reference; the courses are the argument for why each piece is shaped the way it is.