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Fail-Closed

3 articles · Page 1 of 1
James' Growth Diary
James' Growth Diary
May 24, 2026 · Artificial Intelligence

Wrapping Up Harness Engineering: The Six Pillars Methodology Explained

This article reviews the six foundational pillars of Harness Engineering—context architecture, architectural constraints, self‑verification loop, context isolation, entropy governance, and detachability—showing how Claude Code implements them, why infrastructure, not model size, is the real bottleneck, and offering ten concrete actions for practitioners.

AI AgentsEntropy ManagementFail-Closed
0 likes · 17 min read
Wrapping Up Harness Engineering: The Six Pillars Methodology Explained
James' Growth Diary
James' Growth Diary
May 17, 2026 · Backend Development

Deep Dive into the buildTool Factory and Its Fail‑Closed Default Values

The article explains how the buildTool factory injects conservative default safety flags (Fail‑Closed), dramatically reduces boilerplate for the 30‑plus methods required by Claude Code's Tool interface, and combines TypeScript compile‑time checks with Zod runtime validation, illustrated with GlobTool, BashTool and FileEditTool examples, while discussing trade‑offs and design recommendations.

Factory PatternFail-ClosedTool Design
0 likes · 16 min read
Deep Dive into the buildTool Factory and Its Fail‑Closed Default Values