# OpenProject Custom Options API

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

OpenProject Custom Options 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 Custom Options. The published artifact set on APIs.io includes an OpenAPI specification and API documentation.

The custom options endpoints return collections or single entities of type `CustomOption`. The following tables list the different properties of `CustomOption` entities. ## Linked Properties | Link | Description | Type | Constraints | Supported operations | |:-------------:|-------------------------- | ------------- | ----------- | -------------------- | | self | This custom option | CustomOption | not null | READ | ## Local Properties | Property | Description | Type | Constraints | Supported operations | |:----------------:| ---------------------------------------------- | -------- | ----------- | -------------------- | | id | The identifier | Integer | | READ | | value | The value defined for this custom option | String | | READ | custom options are options of list custom fields.

## Machine-readable artifacts (5)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/openproject/refs/heads/main/openapi/openproject-custom-options-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 Categories API](https://apis.io/apis/openproject/openproject-categories-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 Documents API](https://apis.io/apis/openproject/openproject-documents-api/)
- [OpenProject EmojiReactions API](https://apis.io/apis/openproject/openproject-emojireactions-api/)

## Tags

Custom Options

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