Ontology

This is a typed knowledge graph that lets Claude store and query structured information as entities and relations. You'd reach for it when you need to remember people, projects, tasks, or documents and how they connect, especially when multiple skills need to share state. Everything validates against a schema before committing, so you can enforce constraints like "tasks must have owners" or "no circular dependencies." The planning-as-graph-transformation pattern is clever: model multi-step work as a sequence of CREATE and RELATE operations that roll back if constraints break. Storage is append-only JSONL by default, which keeps things simple until you need SQLite. The cross-skill integration examples are the real payoff here.

skills.sh installs: 3.7K
GitHub stars: 674
last updated: Aug 21, 2026

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Install

$ npx -y skills add sundial-org/awesome-openclaw-skills --skill ontology --agent claude-code

Installs into .claude/skills of the current project.

Files

Ontology

A typed vocabulary + constraint system for representing knowledge as a verifiable graph.

Core Concept

Everything is an entity with a type, properties, and relations to other entities. Every mutation is validated against type constraints before committing.

Entity: { id, type, properties, relations, created, updated }
Relation: { from_id, relation_type, to_id, properties }

When to Use

Trigger	Action
"Remember that..."	Create/update entity
"What do I know about X?"	Query graph
"Link X to Y"	Create relation
"Show all tasks for project Z"	Graph traversal
"What depends on X?"	Dependency query
Planning multi-step work	Model as graph transformations
Skill needs shared state	Read/write ontology objects

Core Types

# Agents & People
Person: { name, email?, phone?, notes? }
Organization: { name, type?, members[] }

# Work
Project: { name, status, goals[], owner? }
Task: { title, status, due?, priority?, assignee?, blockers[] }
Goal: { description, target_date?, metrics[] }

SKILL.md on GitHub

Details

Repository: github.com/sundial-org/awesome-openclaw-skills
Categories: AI & Agent Building, Productivity & Planning

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Ontology

Install

Files

Ontology

Core Concept

When to Use

Core Types

Details

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