Ontology Validator

Quality score: 70/100 · Category: General · Sub-category: general-misc

Validate material sample annotations against ontology constraints — check that class names and property names exist in the ontology, verify domain and range consistency for object property relationships, assess annotation completeness (required, recommended, and optional properties), and flag unknown or misspelled terms. Use when verifying that CMSO or other ontology annotations are correct before publishing, checking whether all required properties are present for a class like Crystal Structure or Unit Cell, auditing relationship triples between instances, or catching annotation errors early in a FAIR data workflow, even if the user only says "is my annotation correct" or "what am I missing."

What this skill does

Ontology Validator is a production-ready Claude Code skill (quality score 70/100) in the general-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/ontology-validator/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when verifying that CMSO or other ontology annotations are correct before publishing, checking whether all required properties are present for a class like Crystal Structure or Unit Cell, auditing relationship triples between instances, or catching annotation errors early in a FAIR data workflow, even if the user only says "is my annotation correct" or "what am I missing.

Who uses this skill

The Ontology Validator skill is built for Claude Code users and developers across all disciplines looking for general-purpose AI assistance. It is part of the open ClaudSkills registry, a community-curated catalog of 15,000+ capabilities you can install for Claude Code — the Claude CLI agent.

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/ontology-validator
curl -L https://claudskills.com/skills/ontology-validator/SKILL.md \
  -o ~/.claude/skills/ontology-validator/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/ontology-validator/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/ontology-validator/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\ontology-validator\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

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Part of ClaudSkills — the open registry for Claude Code skills. · What's New · Install guide · About · llms.txt

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