---
title: "Governed enterprise ontology (Palantir Ontology) · agent building block · Agent Fieldbook"
url: https://agentfieldbook.org/design/building_blocks/palantir-ontology/
description: "A governed digital twin of enterprise data, business logic and compliance rules. Two layers: the SEMANTIC layer (Object Types, Link Types, Properties, Structs, Shared Properties, Value Types, Interfaces) models real-world entities and their relationships; the KINETIC layer (Action Types, Functions, Function-Backed Actions) captures how state can change under governance. A DYNAMIC/security layer (Object Security Policies, Object Permissioning) enforces the same compliance guardrails on agents that human operators face. Agents traverse object links to gather context, execute predefined Action Types instead of touching data directly, and compose LLM reasoning with deterministic simulation/optimisation tools wired in as Functions. Distinct from schema-as-ontology (JSON Schema / OpenAPI): those describe tool signatures; this models the entire enterprise."
section: "Design · Building Blocks · Ontology"
source: Agent Fieldbook — generated from the published page
---

# Governed enterprise ontology (Palantir Ontology)

A governed digital twin of enterprise data, business logic and compliance rules. Two layers: the SEMANTIC layer (Object Types, Link Types, Properties, Structs, Shared Properties, Value Types, Interfaces) models real-world entities and their relationships; the KINETIC layer (Action Types, Functions, Function-Backed Actions) captures how state can change under governance. A DYNAMIC/security layer (Object Security Policies, Object Permissioning) enforces the same compliance guardrails on agents that human operators face. Agents traverse object links to gather context, execute predefined Action Types instead of touching data directly, and compose LLM reasoning with deterministic simulation/optimisation tools wired in as Functions. Distinct from schema-as-ontology (JSON Schema / OpenAPI): those describe tool signatures; this models the entire enterprise.

## How it works

## At a glance

| Field | Value |
| --- | --- |
| Kind | Ontology· Digital twin |
| Example | Palantir Foundry / AIP |

## Basis

- [palantir.com](https://palantir.com/docs/foundry/ontology/overview/)