ontology-validator agent skill by HeshamFS

At a glance

Before you install

Read from the skill's files at the directory's October 19, 2026 snapshot: what ships with it, what its code reads, and the terms it is published under.

• Bundled scripts: 3 script files (3 Python). Your agent may run them, so read them first.
• Tool permissions requested: Read, Bash (the allowed-tools field of SKILL.md).
• License: Apache-2.0, an open-source or open-content license.

Install ontology-validator

The skills CLI works with Claude Code, Codex, Cursor and other agents; the other routes copy the folder by hand.

npx skills add https://github.com/HeshamFS/materials-simulation-skills/tree/main/skills/ontology/ontology-validator

tmp="$(mktemp -d)"
git clone --depth 1 https://github.com/HeshamFS/materials-simulation-skills.git "$tmp/repo"
mkdir -p .claude/skills
cp -R "$tmp/repo/"skills/ontology/ontology-validator .claude/skills/
rm -rf "$tmp"

python3 ~/.codex/skills/.system/skill-installer/scripts/install-skill-from-github.py \
    --repo HeshamFS/materials-simulation-skills \
    --path skills/ontology/ontology-validator

HeshamFS/materials-simulation-skills is third-party code. Read SKILL.md and any bundled scripts before you install it.

How the author describes it

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."

From the description field of SKILL.md. Agents read this line to decide when to load the skill.

Sections in SKILL.md

• Goal
• Requirements
• Inputs to Gather
• Decision Guidance
• Script Outputs (JSON Fields)
• Workflow
• Conversational Workflow Example
• CLI Examples
• Error Handling
• Interpretation Guidance
• Verification checklist
• Common pitfalls & rationalizations
• Security
• Input Validation
• File Access
• Tool Restrictions

Files in the skill folder

• CHANGELOG.md
• SKILL.md
• evals/evals.json
• references/asmo_constraints.json
• references/cmso_constraints.json
• references/validation_rules.md
• scripts/completeness_checker.py
• scripts/relationship_checker.py
• scripts/schema_checker.py

Suede Skill Check: 82/100 · B

ontology-validator passes the required frontmatter check and all seven graded checks, which cover the SKILL.md format, a declared license and a commit in the last year. Those checks earn 56 of the score’s points; the rest come from description quality, instruction depth, bundled files, maintenance and curated-list citations. How the score works.

Where this skill is cited

HeshamFS/materials-simulation-skills appears in 2 curated lists: BehiSecc/awesome-claude-skills, VoltAgent/awesome-agent-skills.

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