tillmeier

Crosscheck — Development skill for Claude Code

Development community

Cross-check recent, not-yet-verified work — in ANY project.

How to install Crosscheck

Installs to ~/.claude/skills/tillmeier-claude-code-guardrails-crosscheck/SKILL.md

Terminal

mkdir -p ~/.claude/skills/tillmeier-claude-code-guardrails-crosscheck && curl -fsSL https://raw.githubusercontent.com/tillmeier/claude-code-guardrails/HEAD/commands/crosscheck.md -o ~/.claude/skills/tillmeier-claude-code-guardrails-crosscheck/SKILL.md

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

What Crosscheck does

name: crosscheck description: Cross-check recent, not-yet-verified work — in ANY project. Reconstruct what you shipped or optimized lately and haven't confirmed, find where each change's evidence lives (logs / DB / generated output / endpoint / UI / CI — discover, don't assume), and report honestly: does it run clean, did new problems appear, did the intended fixes actually work. Two rules — verify before asserting, and "ran" ≠ "worked". Read-only. Optional focus hint as argument. argument-h

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