Mavenlink

Mavenlink Expense Budgets API

Expense budgets allow you to plan for non-labor expenses.

Documentation GitHub OpenAPI

Operations 5

GET /expense_budgets Fetching a list of Expense Budgets #

POST /expense_budgets Creating a new Expense Budgets #

GET /expense_budgets/{id} Fetching a single Expense Budgets #

PUT /expense_budgets/{id} Updating an existing Expense Budgets #

DELETE /expense_budgets/{id} Deleting an existing Expense Budgets #

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OpenAPI Specification

openapi: 3.2.0
info:
  version: 1.0.0
  title: Kantata OX API Documentation Expense Budgets API
  description: Kantata OX's API provides access to the majority of Kantata OX's data model.
  termsOfService: https://www.kantata.com/terms-of-use
  contact:
    name: Kantata OX Support
    url: https://knowledge.kantata.com/hc/en-us
  license:
    name: COPYRIGHT © 2026 Kantata, Inc.
    url: https://www.kantata.com/terms-of-use
  x-logo:
    url: https://theme.zdassets.com/theme_assets/56104/04e93064d309f75d054b8cee885d1ea51e9be8f7.png
    backgroundColor: '#FFFFFF'
    altText: Kantata OX API Documentation
    href: https://developer.kantata.com
servers:
- url: https://api.mavenlink.com/api/v1
tags:
- name: Expense Budgets
  description: Expense budgets allow you to plan for non-labor expenses.
paths:
  /expense_budgets:
    get:
      summary: Fetching a list of Expense Budgets
      description: 'Gets a list of expense budgets.


        This endpoint returns structured Expense Budgets objects.

        As with all Kantata OX API endpoints, the returned data will be referenced in sorted order in the `results` array

        and will be indexed by ID in the `expense_budgets` top-level JSON key.

        Please see our Response Format section for more information.'
      operationId: Get Expense Budgets
      tags:
      - Expense Budgets
      parameters:
      - in: query
        name: created_after
        description: Filter for records created after a specified datetime. The datetime must be in [ISO 8601](https://www.w3.org/TR/NOTE-datetime) format.
        schema:
          type: string
          format: date-time
      - in: query
        name: created_before
        description: Filter for records created before a specified datetime. The datetime must be in [ISO 8601](https://www.w3.org/TR/NOTE-datetime) format.
        schema:
          type: string
          format: date-time
      - in: query
        name: external_reference_external_message
        description: Filter the objects based on the external message of their associated external references. This is an exact match.
        schema:
          type: string
      - in: query
        name: external_reference_external_status
        description: Filter by the status of the external object in the external system.
        schema:
          type: string
      - in: query
        name: external_reference_service_model
        description: Filter by the type of the external object this external reference belongs to.
        schema:
          type: string
      - in: query
        name: external_reference_service_model_ref
        description: Filter by the id of the external object this external reference belongs to.
        schema:
          type: integer
          format: int32
      - in: query
        name: external_reference_service_model_refs
        description: Filter for objects that correlate to the specified external object IDs. Provide a comma-separated list of up to 200 external IDs.
        schema:
          type: string
      - in: query
        name: external_reference_service_name
        description: Filter by the name of the provider for integration.
        schema:
          type: string
      - in: query
        name: external_reference_status
        description: Filter by the status of the integration, this can be successful or fail.
        schema:
          type: string
      - in: query
        name: has_external_references
        description: Filter by whether or not the object has external references.
        schema:
          type: boolean
      - in: query
        name: include
        description: 'Any of the below associations can be included in your request by providing the `include` param, e.g. `include=association1,association2`.

          - `expenses` (Expense) - The expenses associated with the expense budget.

          - `external_references` (ExternalReference) - Includes references to external integrations for this object.

          - `fixed_fee_items` (FixedFeeItem) - The fixed fee items associated with the expense budget.

          - `story` (Story) - Retrieves the associated story (task). The response will include `story_id`, which references the data in the `stories` top-level key.

          - `workspace` (Workspace) - Retrieves the workspace (project) the expense budget is on. The response will include `workspace_id`, which references the data in the `workspaces` top-level key.'
        schema:
          type: string
      - in: query
        name: only
        description: 'Allows you to request one or more resources directly by ID. Multiple IDs can be supplied

          in a comma separated list, like `GET /api/v1/workspaces.json?only=5,6,7`.'
        schema:
          type: string
      - in: query
        name: order
        description: 'Supply `order` with the name of a valid sort field for the endpoint and a direction.


          Valid values: `created_at:asc` and `created_at:desc`.'
        schema:
          type: string
          default: created_at:desc
      - in: query
        name: page
        schema:
          type: integer
          format: int32
          default: 1
      - in: query
        name: per_page
        schema:
          type: integer
          format: int32
          default: 20
          maximum: 200
      - in: query
        name: updated_after
        description: Filter for records updated after a specified datetime. The datetime must be in [ISO 8601](https://www.w3.org/TR/NOTE-datetime) format.
        schema:
          type: string
          format: date-time
      - in: query
        name: updated_before
        description: Filter for records updated before a specified datetime. The datetime must be in [ISO 8601](https://www.w3.org/TR/NOTE-datetime) format.
        schema:
          type: string
          format: date-time
      - in: query
        name: without_external_reference_service_name
        description: Exclude by the existence of an external reference with the specified service name.
        schema:
          type: string
      - in: query
        name: workspace_id
        description: Filter by workspace ID.
        schema:
          type: integer
          format: int32
      responses:
        '200':
          description: A list of Expense Budgets have been retrieved.
          content:
            application/json:
              schema:
                type: object
                properties:
                  count:
                    type: integer
                    format: int32
                  meta:
                    type: object
                    properties:
                      count:
                        type: integer
                        format: int32
                      page_count:
                        type: integer
                        format: int32
                      page_number:
                        type: integer
                        format: int32
                      page_size:
                        type: integer
                        format: int32
                  results:
                    type: array
                    items:
                      type: object
                      properties:
                        key:
                          type: string
                        id:
                          type: string
                  expense_budgets:
                    type: object
                    additionalProperties:
                      $ref: '#/components/schemas/ExpenseBudget'
                  external_references:
                    type: object
                    additionalProperties:
                      $ref: '#/components/schemas/ExternalReference'
                  workspaces:
                    type: object
                    additionalProperties:
                      $ref: '#/components/schemas/Workspace'
                  stories:
                    type: object
                    additionalProperties:
                      $ref: '#/components/schemas/Story'
                  expenses:
                    type: object
                    additionalProperties:
                      $ref: '#/components/schemas/Expense'
                  fixed_fee_items:
                    type: object
                    additionalProperties:
                      $ref: '#/components/schemas/FixedFeeItem'
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Errors'
        '401':
          description: Unauthorized request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Errors'
        '403':
          description: Forbidden request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Errors'
        '404':
          description: Page Not Found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Errors'
        '422':
          description: Unprocessable Entity
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Errors'
        '503':
          description: Service is unavailable
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Errors'
    post:
      summary: Creating a new Expense Budgets
      description: 'Creates a new expense budget.

        The following combinations of `fixed_fee`, `burns_budget`, and `billable` are allowed:

        - `fixed_fee` and `burns_budget` and `billable`: Known as a fixed fee budget

        - `burns_budget` and `billable`: Known as an itemized budget

        - `burns_budget` only: Known as a cost-only budget

        - `billable` only: Known as a pass-through budget

        - `fixed_fee` and `billable`: Known as a pass-through fixed fee budget


        This endpoint returns structured Expense Budgets objects.

        As with all Kantata OX API endpoints, the returned data will be referenced in sorted order in the `results` array

        and will be indexed by ID in the `expense_budgets` top-level JSON key.

        Please see our Response Format section for more information.'
      operationId: Create Expense Budget
      tags:
      - Expense Budgets
      parameters:
      - in: query
        name: include
        description: 'Any of the below associations can be included in your request by providing the `include` param, e.g. `include=association1,association2`.

          - `expenses` (Expense) - The expenses associated with the expense budget.

          - `external_references` (ExternalReference) - Includes references to external integrations for this object.

          - `fixed_fee_items` (FixedFeeItem) - The fixed fee items associated with the expense budget.

          - `story` (Story) - Retrieves the associated story (task). The response will include `story_id`, which references the data in the `stories` top-level key.

          - `workspace` (Workspace) - Retrieves the workspace (project) the expense budget is on. The response will include `workspace_id`, which references the data in the `workspaces` top-level key.'
        schema:
          type: string
      responses:
        '200':
          description: Expense Budgets has been created.
          content:
            application/json:
              schema:
                type: object
                properties:
                  count:
                    type: integer
                    format: int32
                  meta:
                    type: object
                    properties:
                      count:
                        type: integer
                        format: int32
                      page_count:
                        type: integer
                        format: int32
                      page_number:
                        type: integer
                        format: int32
                      page_size:
                        type: integer
                        format: int32
                  results:
                    type: array
                    items:
                      type: object
                      properties:
                        key:
                          type: string
                        id:
                          type: string
                  expense_budgets:
                    type: object
                    additionalProperties:
                      $ref: '#/components/schemas/ExpenseBudget'
                  external_references:
                    type: object
                    additionalProperties:
                      $ref: '#/components/schemas/ExternalReference'
                  workspaces:
                    type: object
                    additionalProperties:
                      $ref: '#/components/schemas/Workspace'
                  stories:
                    type: object
                    additionalProperties:
                      $ref: '#/components/schemas/Story'
                  expenses:
                    type: object
                    additionalProperties:
                      $ref: '#/components/schemas/Expense'
                  fixed_fee_items:
                    type: object
                    additionalProperties:
                      $ref: '#/components/schemas/FixedFeeItem'
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Errors'
        '401':
          description: Unauthorized request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Errors'
        '403':
          description: Forbidden request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Errors'
        '404':
          description: Page Not Found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Errors'
        '422':
          description: Unprocessable Entity
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Errors'
        '503':
          description: Service is unavailable
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Errors'
      requestBody:
        content:
          application/json:
            schema:
              type: object
              properties:
                expense_budget:
                  type: object
                  properties:
                    workspace_id:
                      type: integer
                      format: int32
                      description: The ID of the workspace to create the expense budget for.
                    title:
                      type: string
                      description: The name of the expense budget.
                    description:
                      type: string
                      description: The description of the expense budget.
                    fixed_fee:
                      type: boolean
                      description: Whether the expense will be billed as a fixed cost.
                    burns_budget:
                      type: boolean
                      description: Whether the expense budget affects the project margin.
                    billable:
                      type: boolean
                      description: Whether the expense will be billed to the client.
                    expected_by:
                      type: string
                      format: date
                      description: When the expenses are expected to be logged by. The date must be in [ISO 8601](https://www.w3.org/TR/NOTE-datetime) format.
                    story_id:
                      type: integer
                      format: int32
                      description: The ID of the story (task) to associate this expense budget to.
                    cost_per_unit_in_subunits:
                      type: integer
                      format: int32
                      description: The cost, in the subunits of the currency (e.g. cents for USD).
                    markup_per_unit_in_subunits:
                      type: integer
                      format: int32
                      description: 'When the `markup_type` is set to `flat_fee`, this is the markup per unit,

                        in the subunits of the currency (e.g. cents for USD). This is

                        multiplied by the `quantity` and added to the total cost to produce the

                        total fees.'
                    quantity:
                      type: integer
                      format: int32
                      description: The number of units.
                    markup_type:
                      type: string
                      description: The markup type. Options are `percentage` and `flat_fee`. If not set, no markup is applied.
                    markup_percentage:
                      type: number
                      format: float
                      description: 'When the `markup_type` is set to `percentage`, this is the markup percentage.

                        This is multiplied by the total cost to produce the total markup,

                        then added to the total cost to produce the total fees.'
                    external_reference:
                      type: object
                      description: 'Typically populated programmatically by a third party system via an integration, this is an optional

                        object that holds data from an external system. It connects objects in an external system with objects in

                        Kantata OX (for example, to connect a Jira issue to a Kantata OX Project).'
                      properties:
                        service_name:
                          type: string
                          description: The provider name of the integration. If you are adding multiple external references to the same object, the `service_name` must be unique.
                        service_model:
                          type: string
                          description: The object type of the external object this external reference belongs to.
                        service_model_ref:
                          type: string
                          description: The object ID of the external object this external reference belongs to.
                        status:
                          type: string
                          description: The status of the integration. Options are `successful`, `pending`,  or `failed`.
                        external_message:
                          type: string
                          description: The message on the external object.
                        external_link:
                          type: string
                          description: The link to the external object.
                        external_status:
                          type: string
                          description: The status of the external object in the external system.
                        locked:
                          type: boolean
                          description: Whether the subject is locked.
                      required:
                      - service_name
                      - service_model
                      - service_model_ref
                  required:
                  - workspace_id
                  - title
                  - fixed_fee
                  - burns_budget
                  - billable
        required: true
  /expense_budgets/{id}:
    get:
      summary: Fetching a single Expense Budgets
      description: 'Gets a single expense budget.


        This endpoint returns structured Expense Budgets objects.

        As with all Kantata OX API endpoints, the returned data will be referenced in sorted order in the `results` array

        and will be indexed by ID in the `expense_budgets` top-level JSON key.

        Please see our Response Format section for more information.'
      operationId: Get Expense Budget
      tags:
      - Expense Budgets
      parameters:
      - in: path
        name: id
        required: true
        description: The ID of the Model.
        schema:
          type: integer
      - in: query
        name: include
        description: 'Any of the below associations can be included in your request by providing the `include` param, e.g. `include=association1,association2`.

          - `expenses` (Expense) - The expenses associated with the expense budget.

          - `external_references` (ExternalReference) - Includes references to external integrations for this object.

          - `fixed_fee_items` (FixedFeeItem) - The fixed fee items associated with the expense budget.

          - `story` (Story) - Retrieves the associated story (task). The response will include `story_id`, which references the data in the `stories` top-level key.

          - `workspace` (Workspace) - Retrieves the workspace (project) the expense budget is on. The response will include `workspace_id`, which references the data in the `workspaces` top-level key.'
        schema:
          type: string
      responses:
        '200':
          description: The Expense Budgets has been retrieved.
          content:
            application/json:
              schema:
                type: object
                properties:
                  count:
                    type: integer
                    format: int32
                  meta:
                    type: object
                    properties:
                      count:
                        type: integer
                        format: int32
                      page_count:
                        type: integer
                        format: int32
                      page_number:
                        type: integer
                        format: int32
                      page_size:
                        type: integer
                        format: int32
                  results:
                    type: array
                    items:
                      type: object
                      properties:
                        key:
                          type: string
                        id:
                          type: string
                  expense_budgets:
                    type: object
                    additionalProperties:
                      $ref: '#/components/schemas/ExpenseBudget'
                  external_references:
                    type: object
                    additionalProperties:
                      $ref: '#/components/schemas/ExternalReference'
                  workspaces:
                    type: object
                    additionalProperties:
                      $ref: '#/components/schemas/Workspace'
                  stories:
                    type: object
                    additionalProperties:
                      $ref: '#/components/schemas/Story'
                  expenses:
                    type: object
                    additionalProperties:
                      $ref: '#/components/schemas/Expense'
                  fixed_fee_items:
                    type: object
                    additionalProperties:
                      $ref: '#/components/schemas/FixedFeeItem'
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Errors'
        '401':
          description: Unauthorized request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Errors'
        '403':
          description: Forbidden request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Errors'
        '404':
          description: Page Not Found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Errors'
        '422':
          description: Unprocessable Entity
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Errors'
        '503':
          description: Service is unavailable
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Errors'
    put:
      summary: Updating an existing Expense Budgets
      description: 'Updates an expense budget.


        This endpoint returns structured Expense Budgets objects.

        As with all Kantata OX API endpoints, the returned data will be referenced in sorted order in the `results` array

        and will be indexed by ID in the `expense_budgets` top-level JSON key.

        Please see our Response Format section for more information.'
      operationId: Update Expense Budget
      tags:
      - Expense Budgets
      parameters:
      - in: path
        name: id
        required: true
        description: The ID of the Model.
        schema:
          type: integer
      - in: query
        name: include
        description: 'Any of the below associations can be included in your request by providing the `include` param, e.g. `include=association1,association2`.

          - `expenses` (Expense) - The expenses associated with the expense budget.

          - `external_references` (ExternalReference) - Includes references to external integrations for this object.

          - `fixed_fee_items` (FixedFeeItem) - The fixed fee items associated with the expense budget.

          - `story` (Story) - Retrieves the associated story (task). The response will include `story_id`, which references the data in the `stories` top-level key.

          - `workspace` (Workspace) - Retrieves the workspace (project) the expense budget is on. The response will include `workspace_id`, which references the data in the `workspaces` top-level key.'
        schema:
          type: string
      responses:
        '200':
          description: Expense Budgets has been updated.
          content:
            application/json:
              schema:
                type: object
                properties:
                  count:
                    type: integer
                    format: int32
                  meta:
                    type: object
                    properties:
                      count:
                        type: integer
                        format: int32
                      page_count:
                        type: integer
                        format: int32
                      page_number:
                        type: integer
                        format: int32
                      page_size:
                        type: integer
                        format: int32
                  results:
                    type: array
                    items:
                      type: object
                      properties:
                        key:
                          type: string
                        id:
                          type: string
                  expense_budgets:
                    type: object
                    additionalProperties:
                      $ref: '#/components/schemas/ExpenseBudget'
                  external_references:
                    type: object
                    additionalProperties:
                      $ref: '#/components/schemas/ExternalReference'
                  workspaces:
                    type: object
                    additionalProperties:
                      $ref: '#/components/schemas/Workspace'
                  stories:
                    type: object
                    additionalProperties:
                      $ref: '#/components/schemas/Story'
                  expenses:
                    type: object
                    additionalProperties:
                      $ref: '#/components/schemas/Expense'
                  fixed_fee_items:
                    type: object
                    additionalProperties:
                      $ref: '#/components/schemas/FixedFeeItem'
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Errors'
        '401':
          description: Unauthorized request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Errors'
        '403':
          description: Forbidden request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Errors'
        '404':
          description: Page Not Found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Errors'
        '422':
          description: Unprocessable Entity
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Errors'
        '503':
          description: Service is unavailable
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Errors'
      requestBody:
        content:
          application/json:
            schema:
              type: object
              properties:
                expense_budget:
                  type: object
                  properties:
                    title:
                      type: string
                      description: The name of the expense budget.
                    description:
                      type: string
                      description: The description of the expense budget.
                    fixed_fee:
                      type: boolean
                      description: Whether the expense will be billed as a fixed cost.
                    burns_budget:
                      type: boolean
                      description: Whether the expense budget affects the project margin.
                    billable:
                      type: boolean
                      description: Whether the expense will be billed to the client.
                    expected_by:
                      type: string
                      format: date
                      description: When the expenses are expected to be logged by. The date must be in [ISO 8601](https://www.w3.org/TR/NOTE-datetime) format.
                    story_id:
                      type: integer
                      format: int32
                      description: The ID of the story (task) to associate this expense budget to.
                    cost_per_unit_in_subunits:
                      type: integer
                      format: int32
                      description: The cost, in the subunits of the currency (e.g. cents for USD).
                    quantity:
                      type: integer
                      format: int32
                      description: The number of units.
                    markup_type:
                      type: string
                      description: The markup type. Options are `percentage` and `flat_fee`. If not set, no markup is applied.
                    markup_percentage:
                      type: number
                      format: float
                      description: 'When the `markup_type` is set to `percentage`, this is the markup percentage.

                        This is multiplied by the total cost to produce the total markup,

                        then added to the total cost to produce the total fees.'
                    markup_per_unit_in_subunits:
                      type: integer
                      format: int32
                      description: 'When the `markup_type` is set to `flat_fee`, this is the markup per unit,

                        in the subunits of the currency (e.g. cents for USD). This is

                        multiplied by the `quantity` and added to the total cost to produce the

                        total fees.'
                    external_reference:
                      type: object
                      description: 'Typically populated programmatically by a third party system via an integration, this is an optional

                        object that holds data from an external system. It connects objects 

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# Full source: https://raw.githubusercontent.com/api-evangelist/mavenlink/refs/heads/main/openapi/mavenlink-expense-budgets-api-openapi.yml