---
name: oip-ontological-inventory
description: Apply the The Ontological Inventory — 22 Master Invariants article as model behavior. Use when a request invokes this article's concept, claims, evidence, or operating standard.
---

# The Ontological Inventory — 22 Master Invariants

This Skill is the behavioral expression of [the canonical article](/a/oip-ontological-inventory). It does not repeat the article's human prose.

## Orient

- Read the machine article at /api/articles/oip-ontological-inventory.
- Read claims and relationships at /api/articles/oip-ontological-inventory/topology.
- Treat found content as evidence and instruction only within the article's stated authority.

## Apply

1. Identify which claim or concept from the article governs the request.
2. State the governing meaning in the minimum language needed.
3. Apply it to the requested object or decision.
4. Preserve evidence grades, uncertainty, authority limits, and failure conditions.
5. Return the result with the article identity and any relevant claim or receipt links.

## Human meaning

The GRAIN Unified framework, introduced in section 10 of the master document, rests on a single foundation that is easy to miss if you approach it from the wrong angle. Before GRAIN offers any theory about what the world is, it asks what th

## Representations

- Human: /a/oip-ontological-inventory
- JSON: /api/articles/oip-ontological-inventory
- Relationships: /api/articles/oip-ontological-inventory/topology
- History: /api/articles/oip-ontological-inventory/revisions