errors-mistakes
100 / 100 · Low risk
Fine to try.
Use this skill when designing to prevent errors of intention — wrong actions taken because the user's model of the situation was wrong. Trigger when designing for ambiguous information, novel situations, complex decisions, or contexts where users may proceed with confidence based on a wrong understanding. Sub-aspect of `errors`; read that first.
What this skill can do
We found nothing in the files we read that matches our rules. That does not prove the skill is safe: see the limits of static scanning.
Install
Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.
if [ -e ~/.agents/skills/'errors-mistakes' ] || [ -L ~/.agents/skills/'errors-mistakes' ]; then echo 'A skill folder named errors-mistakes already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/hashgraph-online/awesome-codex-plugins' "$d" && git -C "$d" checkout --quiet '6d2e63f73f845eb5dd94c1debba627d4b6e32fba' -- 'plugins/HDeibler/universal-design-principles/plugins/interaction-and-control-principles/skills/errors-mistakes' && mkdir -p ~/.agents/skills && cp -R "$d"/'plugins/HDeibler/universal-design-principles/plugins/interaction-and-control-principles/skills/errors-mistakes' ~/.agents/skills/'errors-mistakes' && rm -rf "$d"; fi
Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'errors-mistakes' ~/.claude/skills/'errors-mistakes' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.
Badge for your README
[](https://zalavijaysinh.github.io/skilltrust/repos/hashgraph-online/awesome-codex-plugins/)
Score history
| Date | Version | Score |
|---|---|---|
| 2026-11-12 | 6d2e63f | 100 |
| 2026-11-11 | 4070676 | 100 |
| 2026-11-10 | f620aba | 100 |
| 2026-11-09 | 3062ea3 | 100 |
| 2026-11-08 | 057d789 | 100 |
| 2026-11-06 | e012fe1 | 100 |