Better Harness
Diagnose and improve coding-agent workflows with verifiable evidence.
Dive into Claude Code: AI Agent System Architecture Analysis
A systematic source-level analysis of Claude Code's architecture, distilled into actionable design guidance for building today's and future AI agent systems.
Nexent
Build and deploy governed production AI agents from natural-language requirements.
Learn Claude Code: Harness Engineering for Real Agents
Go from 0 to 1 building a nano Claude Code–like agent harness that turns any trained model into a working agent product.
Meta-Harness
Automated search for task-specific harnesses around a fixed base model.
Learn Harness Engineering
A project-based course for building the environment, state management, verification, and control mechanisms that make AI coding agents work reliably.
Harness Engineering Series
Two books unpacking the design philosophies behind Claude Code & Codex—constraints, query loops, context governance, and multi-agent verification.