palantir-ontology

name	palantir-ontology
description	Apply the Palantir Foundry Ontology model to ontology-brain. Use for schema decisions, object type choices, typed links, property placement, normalization, source modeling, or ontology health reviews.

Palantir Ontology for Markdown

This skill explains the ontology lens used by ontology-brain/. Read ontology.md for the local schema. Use the references in this skill for the general model.

Model

Palantir's Ontology describes a semantic layer over real-world operations. In this Markdown brain:

Palantir concept	Markdown adaptation
Object type	folder under objects/
Object	Markdown page
Property	frontmatter key
Link type	typed frontmatter list
Action type	log.md operation
Function	reusable concepts/ page
Integrated source	sources/ page

Decision Guides

Property, Link, or Object

• Use a property when the value has no independent identity.
• Use a typed link when the target has its own page.
• Create a new object when the thing has identity, facts, and future references.

Object Type

Use concrete nouns from the domain. Avoid generic types unless the domain itself uses them. Create a folder only when the first page exists.

Link Type

Use the smallest vocabulary that preserves meaning. Add a new link type only when the relationship recurs, reads naturally in both directions, and relates_to loses important information.

Object-Backed Relationship

When a relationship has its own metadata, such as dates, roles, status, or evidence, promote the relationship to a page and link both ends to it.

Anti-Patterns

• Storing the same fact on multiple pages.
• Copying source-owned status into several pages.
• Creating object types before any object exists.
• Linking pages only because they share a keyword.
• Using vague names where domain nouns are available.
• Hand-maintained counts that can be derived from links.

References

• references/overview.md
• references/core-concepts.md
• references/why-ontology.md
• references/ontology-structural-guidance.md
• references/ontology-best-practices.md
• references/ontology-anti-patterns.md
• references/derived-properties.md