Attribution · Agent Engineering Handbook

The Agent Engineering Handbook is an independent public edition maintained by Desmond Landry (@desland01). It is based on public work by three engineers, with thanks — none of whom endorses this handbook or has reviewed it:

Theo (@t3dotgg) — the source video Claude Code's creator has some really good advice (July 21, 2026), his T3 Code repository, and his Melee fork.
Matt Pocock (@mattpocock) — his public Course Video Manager repository.
Boris Cherny (@bcherny) — his public engineering repositories, including json-schema-to-typescript and the sandbox-runtime fork.

Screenshots

The 12 frames under screenshots/ are short excerpts captured from the video above and are reproduced here for identification and commentary. They remain © Theo / their original owners; this repository claims no license over them. The full video is not redistributed.

Third-party code

Code this handbook links to — ESLint's no-restricted-imports documentation, the inspected repositories, and every pinned commit referenced in validation.md — remains the property of its authors under their own licenses. This repository claims no license over that work. Nothing from those repositories is bundled here except short quoted excerpts and descriptions with links back to their sources.

This repository's own content

The guides, skills, examples and build tooling written for this edition are the handbook's own text, adapted from the cited public sources and from the authors' direct inspection of them, with source-derived facts kept separate from author recommendation. See the provenance notes in each skill's frontmatter and validation.md. The site design is this edition's own and is recorded in DESIGN.md; the earlier landing-page template, build/workflows-source.html, is retained in this repository for reference and is no longer used by the renderer.

The renderer depends on Python Markdown 3.10.3 (BSD license), used as an unmodified installed dependency; the lint example depends on ESLint 10.10.0 (MIT license) as pinned in its package.json. Neither is redistributed in modified form.