Harness Engineering
A living book on the scaffolding that surrounds AI agents
An empirical study of the discipline of building the scaffolding around AI agents — theory, a benchmark of real harnesses, and a hands-on build from scratch.
📖 This edition (v0.90.0 · 2026-08-22): o portão que eu escrevi para pegar publicação silenciosa nunca rodou — History
Gilsiley Henrique Darú — editing, direction and orchestration · LinkedIn
Claude (Anthropic) — research and text generation (co-authorship) · GPT (OpenAI) — cover image
v0.90.0 · updated on October 8, 2026