# Doctrine

* [Skill](skill.md) - Definition and quality bar for reusable procedures.
* [OKF Frontmatter](okf-frontmatter.md) - Metadata rules for skill concepts.
* [Ingestion Policy](ingestion-policy.md) - Rules for discovering, reviewing, and adding public skill sources.
* [Normalization Pipeline](normalization-pipeline.md) - Workflow for converting public skill material into reviewed OKF-compatible entries.
* [Aggregator Operations](../operations/aggregator-loop.md) - Role-based loop for scheduled discovery, review, normalization, cataloging, packaging, and publication prep.