# SQL API

- [Overview](https://docs-lunar.earthly.dev/sql-api/sql-api.md): Overview of Lunar's read-only SQL API for querying components, domains, policies, checks, and other Hub data via PostgreSQL clients.
- [Views](https://docs-lunar.earthly.dev/sql-api/views.md)
- [domains](https://docs-lunar.earthly.dev/sql-api/views/domains.md): Schema reference for the domains SQL view — one row per domain with its description, owner, and metadata for grouping components.
- [components](https://docs-lunar.earthly.dev/sql-api/views/components.md): Schema reference for the components and components\_latest SQL views — time series of tracked components with merged collector metadata per commit.
- [component\_deltas](https://docs-lunar.earthly.dev/sql-api/views/component-deltas.md): Schema reference for the component\_deltas SQL views — per-collector metadata deltas that merge into each component's full JSON over time.
- [initiatives](https://docs-lunar.earthly.dev/sql-api/views/initiatives.md): Schema reference for the initiatives SQL view — one row per initiative grouping policies around a shared goal or compliance requirement.
- [policies](https://docs-lunar.earthly.dev/sql-api/views/policies.md): Schema reference for the policies SQL view — one row per policy with its enforcement level and parent initiative.
- [checks](https://docs-lunar.earthly.dev/sql-api/views/checks.md): Schema reference for the checks and checks\_latest SQL views — every policy check evaluation with status, enforcement, component, and PR context.
- [prs](https://docs-lunar.earthly.dev/sql-api/views/prs.md): Schema reference for the prs SQL view — pull request metadata mirrored from GitHub including author, status, and latest commit details.
- [catalog](https://docs-lunar.earthly.dev/sql-api/views/catalog.md): Schema reference for the catalog and catalog\_latest SQL views — full catalog JSON snapshots produced by catalogers, with history over time.


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