EM
Error Message Writer
🔵 Stable🕐 updated 2026-06-30
🔷 SkillSpec L3
pm-uxwriting
Write clear, helpful error messages that tell users what happened and how to fix it. Use when asked to write an error message, validation text, a failure/empty-error state, or to rewrite a cryptic system error. Produces human, blame-free error copy — what went wrong, why (if useful), and the next step — with options per surface (inline, toast, full page) and the related success/empty states.
What to give it
▸What failed — the action or system, and the likely cause(s).
▸The surface — inline field, toast/snackbar, modal, or full-page error.
▸Recovery — what the user can actually do (retry, fix input, wait, contact support).
▸Voice & constraints — tone, length limits, and whether a support/error code is needed.
✅ The bar it holds itself to
Every skill in this library self-verifies — these are this skill's own quality checks, straight from its definition.
✓States what happened in plain language — no codes, no jargon, no stack traces shown to the user
✓Gives a concrete next step the user can take
✓Blame-free — never "you entered it wrong"; focus on the fix
✓Tone matches severity (minor validation vs. serious failure)
✓Variants fit the surface (inline vs. toast vs. full page) and any length limits
✓Separates what to log (technical) from what to show (human)
⚠️ What it refuses to do
Do not show raw/technical errors ("Error 500", "null pointer") to end users
Do not blame the user ("Invalid input") — say what to do instead
Do not write a dead-end ("Something went wrong") with no next step
Do not be jokey about serious failures (payment, data loss) — match the tone to the stakes
Do not bury the action — the recovery step should be obvious
Install
npx pm-claude-skills add --agent claude # or codex · cursor · gemini · hermes
# or one-line MCP (every skill, any client):
claude mcp add pm-skills -- npx -y pm-claude-skills-mcpRelated skills
🔌 Embed this skill
Drop this on your blog, docs, or site — it renders a "Run this skill" card:
<div data-pm-skill="error-message-writer"></div>
<script src="https://mohitagw15856.github.io/pm-claude-skills/embed.js" async></script>💬 Discussion
Error Message Writer is one of 599 open-source professional AI agent skills — all SkillSpec L3.
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