openapi: 3.1.2
info:
  description: "You're looking at the current **stable** documentation of the OpenProject APIv3. If you're interested in the current\ndevelopment version, please go to [github.com/opf](https://github.com/opf/openproject/tree/dev/docs/api/apiv3).\n\n## Introduction\n\nThe documentation for the APIv3 is written according to the [OpenAPI 3.1 Specification](https://swagger.io/specification/).\nYou can either view the static version of this documentation on the [website](https://www.openproject.org/docs/api/introduction/)\nor the interactive version, rendered with [OpenAPI Explorer](https://github.com/Rhosys/openapi-explorer/blob/main/README.md),\nin your OpenProject installation under `/api/docs`.\nIn the latter you can try out the various API endpoints directly interacting with our OpenProject data.\nMoreover you can access the specification source itself under `/api/v3/spec.json` and `/api/v3/spec.yml`\n(e.g. [here](https://community.openproject.org/api/v3/spec.yml)).\n\nThe APIv3 is a hypermedia REST API, a shorthand for \"Hypermedia As The Engine Of Application State\" (HATEOAS).\nThis means that each endpoint of this API will have links to other resources or actions defined in the resulting body.\n\nThese related resources and actions for any given resource will be context sensitive. For example, only actions that the\nauthenticated user can take are being rendered. This can be used to dynamically identify actions that the user might take for any\ngiven response.\n\nAs an example, if you fetch a work package through the [Work Package endpoint](https://www.openproject.org/docs/api/endpoints/work-packages/), the `update` link will only\nbe present when the user you authenticated has been granted a permission to update the work package in the assigned project.\n\n## HAL+JSON\n\nHAL is a simple format that gives a consistent and easy way to hyperlink between resources in your API.\nRead more in the following specification: [https://tools.ietf.org/html/draft-kelly-json-hal-08](https://tools.ietf.org/html/draft-kelly-json-hal-08)\n\n**OpenProject API implementation of HAL+JSON format** enriches JSON and introduces a few meta properties:\n\n- `_type` - specifies the type of the resource (e.g.: WorkPackage, Project)\n- `_links` - contains all related resource and action links available for the resource\n- `_embedded` - contains all embedded objects\n\nHAL does not guarantee that embedded resources are embedded in their full representation, they might as well be\npartially represented (e.g. some properties can be left out).\nHowever in this API you have the guarantee that whenever a resource is **embedded**, it is embedded in its **full representation**.\n\n## API response structure\n\nAll API responses contain a single HAL+JSON object, even collections of objects are technically represented by\na single HAL+JSON object that itself contains its members. More details on collections can be found\nin the [Collections Section](https://www.openproject.org/docs/api/collections/).\n\n## Authentication\n\nThe API supports the following authentication schemes:\n\n* Session-based authentication\n* API tokens\n    * passed as Bearer token\n    * passed via Basic auth\n* OAuth 2.0\n    * using built-in authorization server\n    * using an external authorization server (RFC 9068)\n\nDepending on the settings of the OpenProject instance many resources can be accessed without being authenticated.\nIn case the instance requires authentication on all requests the client will receive an **HTTP 401** status code\nin response to any request.\n\nOtherwise unauthenticated clients have all the permissions of the anonymous user.\n\n### Session-based authentication\n\nThis means you have to login to OpenProject via the Web-Interface to be authenticated in the API.\nThis method is well-suited for clients acting within the browser, like the Angular-Client built into OpenProject.\n\nIn this case, you always need to pass the HTTP header `X-Requested-With \"XMLHttpRequest\"` for authentication.\n\n### API token as bearer token\n\nUsers can authenticate towards the API v3 using an API token as a bearer token.\n\nFor example:\n\n```shell\nAPI_KEY=opapi-2519132cdf62dcf5a66fd96394672079f9e9cad1\ncurl -H \"Authorization: Bearer $API_KEY\" https://community.openproject.org/api/v3/users/42\n```\n\nUsers can generate API tokens on their account page.\n\n### API token through Basic Auth\n\nAPI tokens can also be used with basic auth, using the user name `apikey` (NOT your login) and the API token as the password.\n\nFor example:\n\n```shell\nAPI_KEY=opapi-2519132cdf62dcf5a66fd96394672079f9e9cad1\ncurl -u apikey:$API_KEY https://community.openproject.org/api/v3/users/42\n```\n\n### OAuth 2.0 authentication\n\nOpenProject allows authentication and authorization with OAuth2 with *Authorization code flow*, as well as *Client credentials* operation modes.\n\nTo get started, you first need to register an application in the OpenProject OAuth administration section of your installation.\nThis will save an entry for your application with a client unique identifier (`client_id`) and an accompanying secret key (`client_secret`).\n\nYou can then use one the following guides to perform the supported OAuth 2.0 flows:\n\n- [Authorization code flow](https://oauth.net/2/grant-types/authorization-code)\n\n- [Authorization code flow with PKCE](https://doorkeeper.gitbook.io/guides/ruby-on-rails/pkce-flow), recommended for clients unable to keep the client_secret confidential\n\n- [Client credentials](https://oauth.net/2/grant-types/client-credentials/) - Requires an application to be bound to an impersonating user for non-public access\n\n### OAuth 2.0 using an external authorization server\n\nThere is a possibility to use JSON Web Tokens (JWT) generated by an OIDC provider configured in OpenProject as a bearer token to do authenticated requests against the API.\nThe following requirements must be met:\n\n- OIDC provider must be configured in OpenProject with **jwks_uri**\n- JWT must be signed using RSA algorithm\n- JWT **iss** claim must be equal to OIDC provider **issuer**\n- JWT **aud** claim must contain the OpenProject **client ID** used at the OIDC provider\n- JWT **scope** claim must include a valid scope to access the desired API (e.g. `api_v3` for APIv3)\n- JWT must be actual (neither expired or too early to be used)\n- JWT must be passed in Authorization header like: `Authorization: Bearer {jwt}`\n- User from **sub** claim must be linked to OpenProject before (e.g. by logging in), otherwise it will be not authenticated\n\nIn more general terms, OpenProject should be compliant to [RFC 9068](https://www.rfc-editor.org/rfc/rfc9068) when validating access tokens.\n\n### Why not username and password?\n\nThe simplest way to do basic auth would be to use a user's username and password naturally.\nHowever, OpenProject already has supported API keys in the past for the API v2, though not through basic auth.\n\nUsing **username and password** directly would have some advantages:\n\n* It is intuitive for the user who then just has to provide those just as they would when logging into OpenProject.\n\n* No extra logic for token management necessary.\n\nOn the other hand using **API keys** has some advantages too, which is why we went for that:\n\n* If compromised while saved on an insecure client the user only has to regenerate the API key instead of changing their password, too.\n\n* They are naturally long and random which makes them invulnerable to dictionary attacks and harder to crack in general.\n\nMost importantly users may not actually have a password to begin with. Specifically when they have registered\nthrough an OpenID Connect provider.\n\n## Cross-Origin Resource Sharing (CORS)\n\nBy default, the OpenProject API is _not_ responding with any CORS headers.\nIf you want to allow cross-domain AJAX calls against your OpenProject instance, you need to enable CORS headers being returned.\n\nPlease see [our API settings documentation](https://www.openproject.org/docs/system-admin-guide/api-and-webhooks/) on\nhow to selectively enable CORS.\n\n## Allowed HTTP methods\n\n- `GET` - Get a single resource or collection of resources\n\n- `POST` - Create a new resource or perform\n\n- `PATCH` - Update a resource\n\n- `DELETE` - Delete a resource\n\n## Compression\n\nResponses are compressed if requested by the client. Currently [gzip](https://www.gzip.org/) and [deflate](https://tools.ietf.org/html/rfc1951)\nare supported. The client signals the desired compression by setting the [`Accept-Encoding` header](https://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.3).\nIf no `Accept-Encoding` header is send, `Accept-Encoding: identity` is assumed which will result in the API responding uncompressed."
  title: OpenProject API V3 (Stable) Actions & Capabilities Versions API
  version: '3'
servers:
- url: https://qa.openproject-edge.com
  description: Edge QA instance
- url: https://qa.openproject-stage.com
  description: Staging instance
- url: https://community.openproject.org
  description: Community instance
security:
- BasicAuth: []
tags:
- description: 'Work Packages can be assigned to a version. As such, versions serve to group Work Packages into logical units where each group comprises all the work packages that needs to be finished in order for the version to be finished.


    ## Actions


    | Link                | Description                                                              | Condition                              |

    |:-------------------:|--------------------------------------------------------------------------| ---------------------------------------|

    | update              | Form endpoint that aids in preparing and performing edits on the version | **Permission**: manage versions        |

    | updateImmediately   | Directly perform edits on the version                                    | **Permission**: manage versions        |


    ## Linked Properties


    |  Link               | Description                                | Type          | Constraints                                                    | Supported operations |

    |:-------------------:|-----------------------------------------   | ------------- | -------------------------------------------------------------- | -------------------- |

    | self                | This version                               | Version       | not null                                                       | READ                 |

    | definingProject     | The workspace to which the version belongs | Workspace     | only present if the workspace is visible for the current user  | READ                 |

    | availableInProjects | Workspaces where this version can be used  | Workspaces    | not null                                                       | READ                 |


    Depending on custom fields defined for versions, additional linked properties might exist.


    ## Local Properties


    | Property    | Description                                   | Type        | Constraints                                        | Supported operations |

    | :---------: | --------------------------------------------- | ----------- | -----------                                        | -------------------- |

    | id          | Version id                                    | Integer     | x > 0                                              | READ                 |

    | name        | Version name                                  | String      | not null, may not exceed 60 characters             | READ / WRITE         |

    | description |                                               | Formattable |                                                    | READ / WRITE         |

    | startDate   |                                               | Date        |                                                    | READ / WRITE         |

    | endDate     |                                               | Date        |                                                    | READ / WRITE         |

    | status      | The current status of the version             | String      | not null, only ''open'', ''finished'', ''closed''        | READ / WRITE         |

    | sharing     | The current status of the version             | String      | not null, limited to fixed set as defined by form  | READ / WRITE         |

    | createdAt   | Time of creation                              | DateTime    | not null                                           | READ                 |

    | updatedAt   | Time of the most recent change to the version | DateTime    | not null                                           | READ                 |


    Depending on custom fields defined for versions, additional properties might exist.'
  name: Versions
paths:
  /api/v3/projects/{id}/versions:
    get:
      parameters:
      - description: ID of the project whose versions will be listed
        example: '1'
        in: path
        name: id
        required: true
        schema:
          type: integer
      responses:
        '200':
          content:
            application/hal+json:
              examples:
                response:
                  value:
                    _embedded:
                      elements:
                      - _links:
                          availableInProjects:
                            href: /api/v3/versions/11/workspaces
                          definingProject:
                            href: /api/v3/projects/11
                          self:
                            href: /api/v3/versions/11
                        _type: Version
                        description:
                          format: plain
                          html: This version has a description
                          raw: This version has a description
                        endDate: null
                        id: 11
                        name: v3.0 Alpha
                        startDate: '2014-11-20'
                        status: Open
                      - _links:
                          availableInProjects:
                            href: /api/v3/versions/12/workspaces
                          definingProject:
                            href: /api/v3/projects/11
                          self:
                            href: /api/v3/versions/12
                        _type: Version
                        description:
                          format: plain
                          html: ''
                          raw: ''
                        endDate: null
                        id: 12
                        name: v2.0
                        startDate: null
                        status: Closed
                      - _links:
                          availableInProjects:
                            href: /api/v3/versions/10/workspaces
                          definingProject:
                            href: /api/v3/projects/11
                          self:
                            href: /api/v3/versions/10
                        _type: Version
                        description:
                          format: plain
                          html: ''
                          raw: ''
                        endDate: null
                        id: 10
                        name: v1.0
                        startDate: null
                        status: Open
                    _links:
                      self:
                        href: /api/v3/projects/11/versions
                    _type: Collection
                    count: 3
                    total: 3
              schema:
                $ref: '#/components/schemas/Versions_by_WorkspaceModel'
          description: OK
          headers: {}
        '404':
          content:
            application/hal+json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              examples:
                response:
                  value:
                    _type: Error
                    errorIdentifier: urn:openproject-org:api:v3:errors:NotFound
                    message: The specified project does not exist.
          description: 'Returned if the project does not exist or the client does not have sufficient permissions

            to see it.


            **Required permission:** view work packages **or** manage versions (on given project)


            *Note: A client without sufficient permissions shall not be able to test for the existence of a project.

            That''s why a 404 is returned here, even if a 403 might be more appropriate.*'
          headers: {}
      tags:
      - Versions
      description: 'This endpoint lists the versions that are *available* in a given project.

        Note that due to sharing this might be more than the versions *defined* by that project.


        This endpoint is deprecated and replaced by [`/api/v3/workspaces/{id}/versions`](https://www.openproject.org/docs/api/endpoints/versions/#list-versions-available-in-a-workspace)'
      operationId: List_versions_available_in_a_project
      summary: List versions available in a project
  /api/v3/versions:
    get:
      summary: List versions
      operationId: list_versions
      tags:
      - Versions
      description: 'Returns a collection of versions. The client can choose to filter the versions similar to how work packages are

        filtered. In addition to the provided filters, the server will reduce the result set to only contain versions,

        for which the requesting client has sufficient permissions (*view_work_packages*).'
      parameters:
      - name: filters
        description: 'JSON specifying filter conditions. Accepts the same format as returned by

          the [queries](https://www.openproject.org/docs/api/endpoints/queries/) endpoint. Currently supported

          filters are:


          - sharing: filters versions by how they are shared within the server (*none*, *descendants*, *hierarchy*, *tree*, *system*).

          - name: filters versions by their name.'
        example: '[{ "sharing": { "operator": "=", "values": ["system"] } }]'
        in: query
        required: false
        schema:
          type: string
      - name: sortBy
        description: 'JSON specifying sort criteria. Accepts the same format as returned by

          the [queries](https://www.openproject.org/docs/api/endpoints/queries/) endpoint. Currently supported

          attributes are:


          - id: Sort by the version id

          - name: Sort by the version name using numeric collation, comparing sequences of decimal digits by their numeric value'
        example: '[["name", "desc"]]'
        in: query
        required: false
        schema:
          type: string
      responses:
        '200':
          description: OK
          content:
            application/hal+json:
              schema:
                $ref: '#/components/schemas/VersionCollectionModel'
    post:
      summary: Create version
      operationId: create_version
      tags:
      - Versions
      description: 'Creates a new version applying the attributes provided in the body. Please note that while there is a fixed set

        of attributes, custom fields can extend a version''s attributes and are accepted by the endpoint.


        You can use the form and schema to be retrieve the valid attribute values and by that be guided towards

        successful creation.'
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/VersionWriteModel'
            examples:
              create version:
                $ref: '#/components/examples/VersionCreateRequest'
      responses:
        '201':
          description: Created
          content:
            application/hal+json:
              schema:
                $ref: '#/components/schemas/VersionReadModel'
              examples:
                response:
                  $ref: '#/components/examples/VersionSimpleResponse'
        '400':
          $ref: '#/components/responses/InvalidRequestBody'
        '403':
          content:
            application/hal+json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              examples:
                response:
                  value:
                    _type: Error
                    errorIdentifier: urn:openproject-org:api:v3:errors:MissingPermission
                    message: You are not authorized to access this resource.
          description: 'Returned if the client does not have sufficient permissions.


            **Required permission:** Manage versions'
        '406':
          $ref: '#/components/responses/MissingContentType'
        '415':
          $ref: '#/components/responses/UnsupportedMediaType'
        '422':
          description: 'Returned if:


            * a constraint for a property was violated (`PropertyConstraintViolation`)'
  /api/v3/versions/available_projects:
    get:
      responses:
        '200':
          content:
            application/hal+json:
              examples:
                response:
                  value:
                    _embedded:
                      elements:
                      - _links:
                          categories:
                            href: /api/v3/projects/6/categories
                          createWorkPackage:
                            href: /api/v3/projects/6/work_packages/form
                            method: post
                          createWorkPackageImmediate:
                            href: /api/v3/projects/6/work_packages
                            method: post
                          editWorkPackage:
                            href: /api/v3//work_packages/{id}/form
                            method: post
                            templated: true
                          self:
                            href: /api/v3/projects/6
                            title: A project
                          versions:
                            href: /api/v3/projects/6/versions
                        _type: Project
                        createdAt: '2015-07-06T13:28:14+00:00'
                        description: Eveniet molestias omnis quis aut qui eum adipisci. Atque aut aut in exercitationem adipisci amet. Nisi asperiores quia ratione veritatis enim exercitationem magnam. Aut fuga architecto adipisci nihil. Et repellat pariatur. Aliquam et sed perferendis nostrum quaerat. Fugit doloremque voluptatem.
                        id: 6
                        identifier: a_project
                        name: A project
                        type: Customer Project
                        updatedAt: '2015-10-01T09:55:02+00:00'
                      - _links:
                          categories:
                            href: /api/v3/projects/14/categories
                          createWorkPackage:
                            href: /api/v3/projects/14/work_packages/form
                            method: post
                          createWorkPackageImmediate:
                            href: /api/v3/projects/14/work_packages
                            method: post
                          self:
                            href: /api/v3/projects/14
                            title: Another project
                          versions:
                            href: /api/v3/projects/14/versions
                        _type: Project
                        createdAt: '2016-02-29T12:50:20+00:00'
                        description: ''
                        id: 14
                        identifier: another_project
                        name: Another project
                        type: null
                        updatedAt: '2016-02-29T12:50:20+00:00'
                    _links:
                      self:
                        href: /api/v3/versions/available_projects
                    _type: Collection
                    count: 2
                    total: 2
              schema:
                $ref: '#/components/schemas/Available_projects_for_versionsModel'
          description: OK
          headers: {}
        '403':
          content:
            application/hal+json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              examples:
                response:
                  value:
                    _type: Error
                    errorIdentifier: urn:openproject-org:api:v3:errors:MissingPermission
                    message: You are not authorized to access this resource.
          description: 'Returned if the client does not have sufficient permissions.


            **Required permission:** manage versions'
          headers: {}
      tags:
      - Versions
      description: Gets a list of projects in which a version can be created in. The list contains all projects in which the user issuing the request has the manage versions permissions.
      operationId: Available_projects_for_versions
      summary: Available projects for versions
  /api/v3/versions/form:
    post:
      responses:
        '200':
          description: OK
          headers: {}
        '400':
          $ref: '#/components/responses/InvalidRequestBody'
        '403':
          content:
            application/hal+json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              examples:
                response:
                  value:
                    _type: Error
                    errorIdentifier: urn:openproject-org:api:v3:errors:MissingPermission
                    message: You are not authorized to access this resource.
          description: 'Returned if the client does not have sufficient permissions.


            **Required permission:** manage versions in any project'
          headers: {}
        '406':
          $ref: '#/components/responses/MissingContentType'
        '415':
          $ref: '#/components/responses/UnsupportedMediaType'
      tags:
      - Versions
      description: ''
      operationId: Version_create_form
      summary: Version create form
  /api/v3/versions/schema:
    get:
      responses:
        '200':
          content:
            application/hal+json:
              examples:
                response:
                  value:
                    _dependencies: []
                    _links:
                      self:
                        href: /api/v3/versions/schema
                    _type: Schema
                    createdAt:
                      hasDefault: false
                      name: Created on
                      required: true
                      type: DateTime
                      writable: false
                    customField14:
                      hasDefault: false
                      name: text CF
                      required: false
                      type: String
                      visibility: default
                      writable: true
                    customField40:
                      _links: {}
                      hasDefault: false
                      location: _links
                      name: List CF
                      required: false
                      type: CustomOption
                      visibility: default
                      writable: true
                    definingProject:
                      _links: {}
                      hasDefault: false
                      name: Project
                      required: true
                      type: Project
                      writable: true
                    description:
                      hasDefault: false
                      name: Description
                      required: false
                      type: Formattable
                      writable: true
                    endDate:
                      hasDefault: false
                      name: Finish date
                      required: false
                      type: Date
                      writable: false
                    id:
                      hasDefault: false
                      name: ID
                      required: true
                      type: Integer
                      writable: false
                    name:
                      hasDefault: false
                      maxLength: 60
                      minLength: 1
                      name: Name
                      required: true
                      type: String
                      writable: true
                    sharing:
                      _links: {}
                      hasDefault: false
                      name: Sharing
                      required: true
                      type: String
                      visibility: default
                      writable: true
                    startDate:
                      hasDefault: false
                      name: Start date
                      required: false
                      type: Date
                      writable: true
                    status:
                      _links: {}
                      hasDefault: false
                      name: Status
                      required: true
                      type: String
                      visibility: default
                      writable: true
                    updatedAt:
                      hasDefault: false
                      name: Updated on
                      required: true
                      type: DateTime
                      writable: false
              schema:
                $ref: '#/components/schemas/Version_schemaModel'
          description: OK
          headers: {}
        '403':
          content:
            application/hal+json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              examples:
                response:
                  value:
                    _type: Error
                    errorIdentifier: urn:openproject-org:api:v3:errors:MissingPermission
                    message: You are not authorized to access this resource.
          description: 'Returned if the client does not have sufficient permissions to see the schema.


            **Required permission:** view work packages or manage versions on any project'
          headers: {}
      tags:
      - Versions
      description: ''
      operationId: View_version_schema
      summary: View version schema
  /api/v3/versions/{id}:
    get:
      summary: Get version
      operationId: get_version
      tags:
      - Versions
      description: Retrieves a version defined by its unique identifier.
      parameters:
      - description: Version id
        example: '1'
        in: path
        name: id
        required: true
        schema:
          type: integer
      responses:
        '200':
          description: OK
          content:
            application/hal+json:
              schema:
                $ref: '#/components/schemas/VersionReadModel'
              examples:
                response:
                  $ref: '#/components/examples/VersionSimpleResponse'
        '404':
          content:
            application/hal+json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              examples:
                response:
                  value:
                    _type: Error
                    errorIdentifier: urn:openproject-org:api:v3:errors:NotFound
                    message: The requested resource could not be found.
          description: 'Returned if the version does not exist or the client does not have sufficient permissions

            to see it.


            **Required permission:** view work packages **or** manage versions (any project where the version is available)


            *Note: A client without sufficient permissions shall not be able to test for the existence of

            a version. That''s why a 404 is returned here, even if a 403 might be more appropriate.*'
    delete:
      summary: Delete version
      operationId: delete_Version
      tags:
      - Versions
      description: Deletes the version. Entities associated to the version will no longer be assigned to it.
      parameters:
      - description: Version id
        example: '1'
        in: path
        name: id
        required: true
        schema:
          type: integer
      responses:
        '204':
          description: Returned if the version was successfully deleted
        '403':
          content:
            application/hal+json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              examples:
                response:
                  value:
                    _type: Error
                    errorIdentifier: urn:openproject-org:api:v3:errors:MissingPermission
                    message: You are not authorized to access this resource.
          description: 'Returned if the client does not have sufficient permissions.


            **Required permission:** manage versions'
        '404':
          content:
            application/hal+json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              examples:
                response:
                  value:
                    _type: Error
                    errorIdentifier: urn:openproject-org:api:v3:errors:NotFound
                    message: The requested resource could not be found.
          description: 'Returned if the version does not exist or the client does not have sufficient permissions

            to see it.


            **Required permission:** view work packages **or** manage versions (any project where the version is available)


            *Note: A client without sufficient permissions shall not be able to test for the existence of

            a version. That''s why a 404 is returned here, even if a 403 might be more appropriate.*'
        '406':
          $ref: '#/components/responses/MissingContentType'
        '415':
          $ref: '#/components/responses/UnsupportedMediaType'
    patch:
      summary: Update Version
      operationId: update_Version
      tags:
      - Versions
      description: 'Updates the given version by applying the attributes provided in the body. Please note that while there is a fixed

        set of attributes, custom fields can extend a version''s attributes and are accepted by the endpoint.'
      parameters:
      - description: Version id
        example: '1'
        in: path
        name: id
        required: true
        schema:
          type: integer
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/VersionWriteModel'
            examples:
              update name:
                $ref: '#/components/examples/VersionUpdateNameRequest'
      responses:
        '200':
          description: OK
          content:
            application/hal+json:
              schema:
                $ref: '#/components/schemas/VersionReadModel'
              examples:
                response:
                  $ref: '#/components/examples/VersionSimpleResponse'
        '400':
          $ref: '#/components/responses/InvalidRequestBody'
        '403':
          content:
            application/hal+json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              examples:
                response:
                  value:
                    _type: Error
                    errorIdentifier: urn:openproject-org:api:v3:errors:MissingPermission
                    message: You are not authorized to access this resource.
          description: 'Returned if the client does not have sufficient permissions.


            **Required permission:** Manage versions in the version''s project.'
        '404':
          content:
            application/hal+json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              examples:
                response:
                  value:
                    _type: Error
                    errorIdentifier: urn:openproject-org:api:v3:errors:NotFound
                    message: The requested resource could not be found.
          description: 'Returned if the version does not exist or the client does not have sufficient permissions

            to see it.


            **Required permission:** view work packages **or** manage versions (any project where the version is available)


            *Note: A client without sufficient permissions shall not be able to test for the existence of

            a version. That''s why a 404 is returned here, even if a 403 might be more appropriate.*'
        '406':
          $ref: '#/components/responses/MissingContentType'
        '415':
          $ref: '#/components/responses/UnsupportedMediaType'
        '422':
          description: 'Returned if:


            * a constraint for a property was violated (`PropertyConstraintViolation`)'
  /api/v3/versions/{id}/form:
    post:
      parameters:
      - description: Project id
        example: '1'
        in: path
        name: id
        required: true
        schema:
          type: integer
      responses:
        '200':
          description: OK
          headers: {}
        '400':
          $ref: '#/components/responses/InvalidRequestBody'
        '403':
          content:
            application/hal+json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              examples:
                response:
                  value:
                    _type: Error
                    errorIdentifier: urn:openproject-org:api:v3:errors:MissingPermission
                    message: You are not authorized to access this resource.
          description: 'Returned if the client does not have sufficient permissions.


            **Required permission:** manage versions in the version''s project'
          headers: {}
        '406':
          $ref: '#/components/responses/MissingContentType'
        '415':
          $ref: '#/components/responses/UnsupportedMediaType'
      tags:
      - Versions
      description: ''
      operationId: Version_update_form
      summary: Version update form
  /api/v3/workspaces/{id}/versions:
    get:
      parameters:
      - description: ID of the workspace whose versions will be listed
        example: '1'
        in: path
        name: id
        required: true
        schema:
          type: integer
      responses:
        '200':
          content:
            application/hal+json:
              examples:
                response:
                  value:
                    _embedded:
                      elements:
                      - _links:
                          availableInProjects:
                            href: /api/v3/versions/11/workspaces
                          definingProject:
                            href: /api/v3/projects/11
                          self:
                            href: /api/v3/versions/11
                        _type: Version
                        description:
                          format: plain
                          html: This version has a description
                          raw: This version has a description
                        endDate: null
                        id: 11
                        name: v3.0 Alpha
                        startDate: '2014-11-20'
                        status: Open
                      - _links:
                          availableInProjects:
                            href: /api/v3/versions/12/workspaces
                          definingProject:
                            href: /api/v3/projects/11
                          self:
                            href: /api/v3/versions/12
                        _type: Version
                        description:
                          format: plain
                          html: ''
                          raw: ''
                        endDate: null
                        id: 12
                        name: v2.0
                        startDate: null
                        status: Closed
                      - _links:
                          availableInProjects:
                            href: /api/v3/versions/10/workspaces
                          definingProject:
                            href: /api/v3/projects/11
                          self:
                            href: /api/v3/versions/10
                        _type: Version
                        description:
                          format: plain
                          html: ''
                          raw: ''
                        endDate: null
                        id: 10
                        name: v1.0
                        startDate: null
                        status: Open
                    _links:
                      self:
                        href: /api/v3/workspaces/11/versions
                    _type: Collection
                    count: 3
                    total: 3
              schema:
                $ref: '#/components/schemas/Versions_by_WorkspaceModel'
          description: OK
          headers: {}
        '404':
          content:
            application/hal+json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              examples:
                response:
                  value:
                    _type: Error
                    errorIdentifier: urn:openproject-org:api:v3:errors:NotFound
                    message: The specified project does not exist.
          description: 'Returned if the workspace does not exist or the client does not have sufficient permissions

            to see it.


            **Required permission:** view work packages **or** manage versions (on given workspace)


            *Note: A client without sufficient permissions shall not be able to test for the existence of a workspace.

            That''s why a 404 is returned here, even if a 403 might be more appropriate.*'
          headers: {}
      tags:
      - Versions
      description: 'This endpoint lists the versions that are *available* in a given workspace.

        Note that due to sharing this might be more than the versions *defined* by that workspace.'
      operationId: List_versions_available_in_a_workspace
      summary: List versions available in a workspace
components:
  schemas:
    CollectionModel:
      type: object
      required:
      - _type
      - total
      - count
      - _links
      properties:
        _type:
          type: string
          enum:
          - Collection
        total:
          type: integer
          description: The total amount of elements available in the collection.
          minimum: 0
        count:
          type: integer
          description: Actual amount of elements in this response.
          minimum: 0
        _links:
          $ref: '#/components/schemas/CollectionLinks'
    Link:
      type: object
      required:
      - href
      properties:
        href:
          type:
          - string
          - 'null'
          description: URL to the referenced resource (might be relative)
        title:
          type: string
          description: Representative label for the resource
        templated:
          type: boolean
          default: false
          description: If true the href contains parts that need to be replaced by the client
        method:
          type: string
          default: GET
          description: The HTTP verb to use when requesting the resource
        payload:
          type: object
          description: The payload to send in the request to achieve the desired result
        identifier:
          type: string
          description: An optional unique identifier to the link object
        type:
          type: string
          description: The MIME-Type of the returned resource.
      example:
        href: /api/v3/work_packages
        method: POST
    Versions_by_WorkspaceModel:
      allOf:
      - $ref: '#/components/schemas/CollectionModel'
      - type: object
        required:
        - _links
        - _embedded
        properties:
          _links:
            type: object
            required:
            - self
            properties:
              self:
                allOf:
                - $ref: '#/components/schemas/Link'
                - description: 'The versions collection


                    **Resource**: VersionsCollection'
                  readOnly: true
          _embedded:
            type: object
            properties:
              elements:
                type: array
                readOnly: true
                items:
                  allOf:
                  - $ref: '#/components/schemas/VersionReadModel'
                  - description: Collection of Versions
    VersionWriteModel:
      allOf:
      - $ref: '#/components/schemas/CustomFieldProperties'
      - type: object
        properties:
          name:
            type: string
            description: Version name
          description:
            $ref: '#/components/schemas/Formattable'
          startDate:
            type:
            - string
            - 'null'
            format: date
          endDate:
            type:
            - string
            - 'null'
            format: date
          status:
            type: string
            description: 'The current status of the version. This could be:


              - *open*: if the version is available to be assigned to work packages in all shared projects

              - *locked*: if the version is not finished, but locked for further assignments to work packages

              - *closed*: if the version is finished'
            enum:
            - open
            - locked
            - closed
          sharing:
            type: string
            description: 'The indicator of how the version is shared between projects. This could be:


              - *none*: if the version is only available in the defining project

              - *descendants*: if the version is shared with the descendants of the defining project

              - *hierarchy*: if the version is shared with the descendants and the ancestors of the defining project

              - *tree*: if the version is shared with the root project of the defining project and all descendants of the root project

              - *system*: if the version is shared globally'
            enum:
            - none
            - descendants
            - hierarchy
            - tree
            - system
          _links:
            allOf:
            - $ref: '#/components/schemas/CustomFieldLinkedProperties'
            - type: object
              properties:
                definingProject:
                  allOf:
                  - $ref: '#/components/schemas/Link'
                  - description: 'The workspace to which the version belongs


                      **Resource**: Workspace'
    VersionReadModel:
      allOf:
      - $ref: '#/components/schemas/CustomFieldProperties'
      - type: object
        required:
        - id
        - _type
        - name
        - description
        - startDate
        - endDate
        - status
        - sharing
        - createdAt
        - updatedAt
        properties:
          id:
            type: integer
            description: Version id
            minimum: 1
          _type:
            type: string
            enum:
            - Version
          name:
            type: string
            description: Version name
          description:
            $ref: '#/components/schemas/Formattable'
          startDate:
            type:
            - string
            - 'null'
            format: date
          endDate:
            type:
            - string
            - 'null'
            format: date
          status:
            type: string
            description: 'The current status of the version. This could be:


              - *open*: if the version is available to be assigned to work packages in all shared projects

              - *locked*: if the version is not finished, but locked for further assignments to work packages

              - *closed*: if the version is finished'
            enum:
            - open
            - locked
            - closed
          sharing:
            type: string
            description: 'The indicator of how the version is shared between projects. This could be:


              - *none*: if the version is only available in the defining project

              - *descendants*: if the version is shared with the descendants of the defining project

              - *hierarchy*: if the version is shared with the descendants and the ancestors of the defining project

              - *tree*: if the version is shared with the root project of the defining project and all descendants of the root project

              - *system*: if the version is shared globally'
            enum:
            - none
            - descendants
            - hierarchy
            - tree
            - system
          createdAt:
            type: string
            format: date-time
            description: Time of creation
          updatedAt:
            type: string
            format: date-time
            description: Time of the most recent change to the version
          _links:
            allOf:
            - $ref: '#/components/schemas/CustomFieldLinkedProperties'
            - type: object
              required:
              - self
              - schema
              - definingProject
              - availableInProjects
              properties:
                self:
                  allOf:
                  - $ref: '#/components/schemas/Link'
                  - description: 'This version


                      **Resource**: Version'
                schema:
                  allOf:
                  - $ref: '#/components/schemas/Link'
                  - description: 'The schema of this version


                      **Resource**: VersionSchema'
                update:
                  allOf:
                  - $ref: '#/components/schemas/Link'
                  - description: 'Form endpoint that aids in preparing and performing edits on the version


                      # Conditions


                      **Permission**: manage versions'
                delete:
                  allOf:
                  - $ref: '#/components/schemas/Link'
                  - description: 'Deletes this version


                      # Conditions


                      **Permission**: manage versions'
                updateImmediately:
                  allOf:
                  - $ref: '#/components/schemas/Link'
                  - description: 'Directly perform edits on the version


                      # Conditions


                      **Permission**: manage versions'
                definingProject:
                  allOf:
                  - $ref: '#/components/schemas/Link'
                  - description: 'The workspace to which the version belongs


                      **Resource**: Workspace'
                availableInProjects:
                  allOf:
                  - $ref: '#/components/schemas/Link'
                  - description: 'Workspaces where this version can be used


                      **Resource**: Workspace'
    CollectionLinks:
      type: object
      required:
      - self
      properties:
        self:
          allOf:
          - $ref: '#/components/schemas/Link'
          - description: 'This collection resource.


              **Resource**: Collection'
    Formattable:
      type: object
      required:
      - format
      properties:
        format:
          type: string
          enum:
          - plain
          - markdown
          - custom
          readOnly: true
          description: Indicates the formatting language of the raw text
          example: markdown
        raw:
          type: string
          description: The raw text, as entered by the user
          example: I **am** formatted!
        html:
          type: string
          readOnly: true
          description: The text converted to HTML according to the format
          example: I <strong>am</strong> formatted!
      example:
        format: markdown
        raw: I am formatted!
        html: I am formatted!
    Available_projects_for_versionsModel:
      type: object
      example:
        _links:
          self:
            href: /api/v3/versions/available_projects
        _type: Collection
        total: 2
        count: 2
        _embedded:
          elements:
          - _type: Project
            _links:
              self:
                href: /api/v3/projects/6
                title: A project
              editWorkPackage:
                href: /api/v3/work_packages/{id}/form
                templated: true
                method: post
              createWorkPackage:
                href: /api/v3/projects/6/work_packages/form
                method: post
              createWorkPackageImmediate:
                href: /api/v3/projects/6/work_packages
                method: post
              categories:
                href: /api/v3/projects/6/categories
              versions:
                href: /api/v3/projects/6/versions
            id: 6
            identifier: a_project
            name: A project
            description: Eveniet molestias omnis quis aut qui eum adipisci. Atque aut aut in exercitationem adipisci amet. Nisi asperiores quia ratione veritatis enim exercitationem magnam. Aut fuga architecto adipisci nihil. Et repellat pariatur. Aliquam et sed perferendis nostrum quaerat. Fugit doloremque voluptatem.
            createdAt: '2015-07-06T13:28:14+00:00'
            updatedAt: '2015-10-01T09:55:02+00:00'
            type: Customer Project
          - _type: Project
            _links:
              self:
                href: /api/v3/projects/14
                title: Another project
              createWorkPackage:
                href: /api/v3/projects/14/work_packages/form
                method: post
              createWorkPackageImmediate:
                href: /api/v3/projects/14/work_packages
                method: post
              categories:
                href: /api/v3/projects/14/categories
              versions:
                href: /api/v3/projects/14/versions
            id: 14
            identifier: another_project
            name: Another project
            description: ''
            createdAt: '2016-02-29T12:50:20+00:00'
            updatedAt: '2016-02-29T12:50:20+00:00'
            type: null
    ErrorResponse:
      type: object
      required:
      - _type
      - errorIdentifier
      - message
      properties:
        _embedded:
          type: object
          properties:
            details:
              type: object
              properties:
                attribute:
                  type: string
                  example: project
        _type:
          type: string
          enum:
          - Error
        errorIdentifier:
          type: string
          example: urn:openproject-org:api:v3:errors:PropertyConstraintViolation
        message:
          type: string
          example: Project can't be blank.
    CustomFieldLinkedProperties:
      type: object
      patternProperties:
        ^customField\d+$:
          allOf:
          - $ref: '#/components/schemas/Link'
          - description: 'A custom field value that belongs to a custom field of a reference type:


              - Hierarchy

              - List

              - User

              - Version

              - Weighted item list'
    Version_schemaModel:
      type: object
      example:
        _type: Schema
        _dependencies: []
        id:
          type: Integer
          name: ID
          required: true
          hasDefault: false
          writable: false
        name:
          type: String
          name: Name
          required: true
          hasDefault: false
          writable: true
          minLength: 1
          maxLength: 60
        description:
          type: Formattable
          name: Description
          required: false
          hasDefault: false
          writable: true
        startDate:
          type: Date
          name: Start date
          required: false
          hasDefault: false
          writable: true
        endDate:
          type: Date
          name: Finish date
          required: false
          hasDefault: false
          writable: false
        status:
          type: String
          name: Status
          required: true
          hasDefault: false
          writable: true
          visibility: default
          _links: {}
        sharing:
          type: String
          name: Sharing
          required: true
          hasDefault: false
          writable: true
          visibility: default
          _links: {}
        createdAt:
          type: DateTime
          name: Created on
          required: true
          hasDefault: false
          writable: false
        updatedAt:
          type: DateTime
          name: Updated on
          required: true
          hasDefault: false
          writable: false
        definingProject:
          type: Project
          name: Project
          required: true
          hasDefault: false
          writable: true
          _links: {}
        customField14:
          type: String
          name: text CF
          required: false
          hasDefault: false
          writable: true
          visibility: default
        customField40:
          type: CustomOption
          name: List CF
          required: false
          hasDefault: false
          writable: true
          location: _links
          visibility: default
          _links: {}
        _links:
          self:
            href: /api/v3/versions/schema
    VersionCollectionModel:
      allOf:
      - $ref: '#/components/schemas/CollectionModel'
      - type: object
        required:
        - _links
        - _embedded
        properties:
          _links:
            type: object
            required:
            - self
            properties:
              self:
                allOf:
                - $ref: '#/components/schemas/Link'
                - description: 'This version collection


                    **Resource**: Collection'
          _embedded:
            type: object
            required:
            - elements
            properties:
              elements:
                type: array
                items:
                  $ref: '#/components/schemas/VersionReadModel'
    CustomFieldProperties:
      type: object
      patternProperties:
        ^customField\d+$:
          type:
          - 'null'
          - number
          - boolean
          - string
          - object
          description: 'A custom field value, that belongs to a custom field of a simple type:


            - Boolean

            - Date

            - Float

            - Integer

            - Link (URL)

            - Text

            - Long text'
  responses:
    MissingContentType:
      description: Occurs when the client did not send a Content-Type header
      content:
        text/plain:
          schema:
            type: string
          example: Missing content-type header
    UnsupportedMediaType:
      description: Occurs when the client sends an unsupported Content-Type header.
      content:
        application/hal+json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
          example:
            _type: Error
            errorIdentifier: urn:openproject-org:api:v3:errors:TypeNotSupported
            message: Expected CONTENT-TYPE to be (expected value) but got (actual value).
    InvalidRequestBody:
      description: Occurs when the client did not send a valid JSON object in the request body.
      content:
        application/hal+json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
          example:
            _type: Error
            errorIdentifier: urn:openproject-org:api:v3:errors:InvalidRequestBody
            message: The request body was not a single JSON object.
  examples:
    VersionUpdateNameRequest:
      description: Example request body to update the name of a version.
      value:
        name: v0.9.1-alpha
    VersionCreateRequest:
      description: Request to create a basic version with custom fields
      value:
        name: v0.9.1-alpha
        startDate: '2026-02-02'
        endDate: '2026-02-09'
        status: open
        sharing: tree
        customField14: true
        _links:
          definingProject:
            href: /api/v3/projects/10
            title: Death Star
          customField23:
            href: /api/v3/users/18
            title: Mara Jade
    VersionSimpleResponse:
      description: Simple response showing a single version
      value:
        _type: Version
        id: 3
        name: v0.9.1-alpha
        description:
          format: plain
          raw: First draft of the energy weapon ... (behold, Alderaan *evil_laughter*)
          html: <p>First draft of the energy weapon ... (behold, Alderaan *evil_laughter*)</p>
        startDate: '2026-02-02'
        endDate: '2026-02-09'
        status: closed
        sharing: none
        createdAt: '2026-02-06T09:30:49.157Z'
        updatedAt: '2026-02-10T09:53:21.620Z'
        customField14: true
        _links:
          self:
            href: /api/v3/versions/1
            title: v0.1.0-alpha
          schema:
            href: /api/v3/versions/schema
          update:
            href: /api/v3/versions/1/form
            method: post
          updateImmediately:
            href: /api/v3/versions/1
            method: patch
          delete:
            href: /api/v3/versions/1
            method: delete
          availableInProjects:
            href: /api/v3/versions/1/workspaces
          definingProject:
            href: /api/v3/projects/10
            title: Death Star
          customField23:
            href: /api/v3/users/18
            title: Mara Jade
  securitySchemes:
    BasicAuth:
      type: http
      scheme: basic