---
layout: docs
page_title: Domain Model - Host Catalogs
description: |-
  The anatomy of a Boundary host catalog
---

# Host Catalogs

A host catalog is a resource
that contains [hosts][] and [host sets][].
A host catalog can only be defined within a [project][].

## Attributes

A host catalog has the following configurable attributes:

- `name` - (optional)
  If set, the `name` must be unique within the host catalog's [project][].

- `description` - (optional)

## Referenced By

- [Host][]
- [Host Set][]
- [Project][]

[host set]: /docs/concepts/domain-model/host-sets
[host sets]: /docs/concepts/domain-model/host-sets
[host]: /docs/concepts/domain-model/hosts
[hosts]: /docs/concepts/domain-model/hosts
[project]: /docs/concepts/domain-model/scopes#projects

## Service API Docs

The following services are relevant to this resource:

- [Host Catalog Service](/api-docs/host-catalog-service)