# OpenProject Attachments API

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

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

Attachments are files that were uploaded to OpenProject. Each attachment belongs to a single container (e.g. a work package or a board message). ## Actions | Link | Description | Condition | |:-------------------:|----------------------------------------------------------------------| -------------------------------------------- | | delete | Deletes this attachment | **Permission**: edit on attachment container or being the author for attachments without container | ## Linked Properties | Link | Description | Type | Constraints | Supported operations | |:----------------:| --------------------------------------------------- | ------------- | ----------- | -------------------- | | self | This attachment | Attachment | not null | READ | | container | The object (e.g. WorkPackage) housing the attachment| Anything | not null | READ | | author | The user who uploaded the attachment | User | not null | READ | | downloadLocation | Direct download link to the attachment | - | not null | READ | ## Local Properties | Property | Description | Type | Constraints | Supported operations | |:------------:| ----------------------------------------------- | ----------- | ----------- | -------------------- | | id | Attachment's id | Integer | x > 0 | READ | | title | The name of the file | String | not null | READ | | fileName | The name of the uploaded file | String | not null | READ | | fileSize | The size of the uploaded file in Bytes | Integer | x >= 0 | READ | | description | A user provided description of the file | Formattable | not null | READ | | contentType | The files MIME-Type as determined by the server | String | not null | READ | | digest | A checksum for the files content | Digest | not null | READ | | createdAt | Time of creation | DateTime | not null | READ |

## Machine-readable artifacts (5)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/openproject/refs/heads/main/openapi/openproject-attachments-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 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 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

Attachments

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