David WalshSubscribe
daveisbest.org · since 2025

Architecting technology that survives its own future.

I'm David Walsh — Director of Technology Solutions. I write about the practice of building software: architecture, teams, and the quiet decisions that compound.

Featured

This month

All writing
Field briefing

Opus 4.8, Mythos & Glasswing

A new flagship that ships honesty as its headline, a frontier model too dangerous to release, and a coalition quietly finding ten thousand zero-days — what's confirmed, and what's still rumour.

May 29, 2026·14 min read
Review

Agent view, live

Anthropic shipped a real dashboard for parallel Claude Code sessions. I rebuilt it in the browser — scrubbable, keyboard-driven — so you can feel the async-by-default shift in 90 seconds.

May 13, 2026·9 min read
Review

/goal: Claude Code's per-turn condition check

A small fast model reads every turn and decides whether you're done — closing the gap between 'Claude says it's finished' and 'the tests actually pass.'

May 12, 2026·7 min read
Recent guides

Practical, hands-on

Apr 20, 2026

Claude Design: the first AI design tool that writes to your codebase

Anthropic Labs' new product ingests a brand at the code level, hands off to Claude Code cleanly, and will lock you out for a week if you try to run three clients through it on a Tuesday.

14 min read
Apr 19, 2026

How I wrote The Unseen Alliance with Claude

Fifty chapters drafted in hours instead of the decade it would have taken by hand — and the Claude Code plugin that kept the manuscript from drifting as it scaled.

22 min read
Skills

For Claude Code

All skills
Claude Code · Skill

Agent Creator

Create Claude Code subagent definitions — the YAML + Markdown files in .claude/agents/ that the main thread delegates tasks to. Interviews you enough to make opinionated choices, then writes a definition that actually triggers.

v114 KB·subagents · claude-code
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