# OpenProject Categories API

**Canonical:** https://apis.io/apis/openproject/openproject-categories-api/  
**Provider:** OpenProject — https://apis.io/providers/openproject/  
**Base URL:** https://community.openproject.org/api/v3  
**Documentation:** https://www.openproject.org/docs/api/

OpenProject Categories API is one of 62 APIs that [OpenProject](https://apis.io/providers/openproject/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Categories. The published artifact set on APIs.io includes an OpenAPI specification and API documentation.

The categories endpoints return collections or single entities of type `Category`. The following tables list the different properties of `Category` entities. ## Linked Properties | Link | Description | Type | Constraints | Supported operations | |:---------------:| --------------------------------------------------- | ------------- | ----------- | -------------------- | | self | This category | Category | not null | READ | | project | The project of this category | Project | not null | READ | | defaultAssignee | Default assignee for work packages of this category | User | | READ | ## Local Properties | Property | Description | Type | Constraints | Supported operations | | :--------: | ------------- | ------- | ----------- | -------------------- | | id | Category id | Integer | x > 0 | READ | | name | Category name | String | | READ |

## Machine-readable artifacts (5)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/openproject/refs/heads/main/openapi/openproject-categories-api-openapi.yml
- **Documentation** — https://www.openproject.org/docs/api/
- **Introduction** — https://www.openproject.org/docs/api/introduction/
- **Endpoints** — https://www.openproject.org/docs/api/endpoints/
- **GitHub** — https://github.com/opf/openproject

## Other OpenProject APIs (12)

- [OpenProject Actions & Capabilities API](https://apis.io/apis/openproject/openproject-actions-capabilities-api/)
- [OpenProject Activities API](https://apis.io/apis/openproject/openproject-activities-api/)
- [OpenProject Attachments API](https://apis.io/apis/openproject/openproject-attachments-api/)
- [OpenProject Budgets API](https://apis.io/apis/openproject/openproject-budgets-api/)
- [OpenProject Collections API](https://apis.io/apis/openproject/openproject-collections-api/)
- [OpenProject Configuration API](https://apis.io/apis/openproject/openproject-configuration-api/)
- [OpenProject Custom actions API](https://apis.io/apis/openproject/openproject-custom-actions-api/)
- [OpenProject Custom Field Items API](https://apis.io/apis/openproject/openproject-custom-field-items-api/)
- [OpenProject Custom Fields API](https://apis.io/apis/openproject/openproject-custom-fields-api/)
- [OpenProject Custom Options API](https://apis.io/apis/openproject/openproject-custom-options-api/)
- [OpenProject Documents API](https://apis.io/apis/openproject/openproject-documents-api/)
- [OpenProject EmojiReactions API](https://apis.io/apis/openproject/openproject-emojireactions-api/)

## Tags

Categories

---

Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/openproject/openproject-categories-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/openproject/.