tkwong

After Change Monitor — Development skill for Claude Code

Development community

After making any non-trivial change, define a verification window and check back.

How to install After Change Monitor

Installs to ~/.claude/skills/tkwong-claude-ops-after-change-monitor/SKILL.md

Terminal

mkdir -p ~/.claude/skills/tkwong-claude-ops-after-change-monitor && curl -fsSL https://raw.githubusercontent.com/tkwong/claude-ops/HEAD/skills/after-change-monitor.md -o ~/.claude/skills/tkwong-claude-ops-after-change-monitor/SKILL.md

Restart Claude Code, or start a new session, for it to be picked up.

What After Change Monitor does

name: after-change-monitor description: After making any non-trivial change, define a verification window and check back. Don't fire-and-forget.

after-change-monitor

You just changed something — config, code, restart, parameter. **Now you need to verify it actually had the effect you intended.** Don't move on to the next task until you've checked back at least once.

The mindset

A change is a *hypothesis*: "I think doing X will cause Y." You verify by measuring Y before and after

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