openapi: 3.0.3
info:
  title: Apptio Technology Business Management Budgets Cost Allocations API
  description: API for the Apptio technology business management platform, providing programmatic access to cost allocations, IT financial data, budgets, and technology investment analytics for IT finance and planning teams.
  version: 1.0.0
  contact:
    name: Apptio Developer
    url: https://developer.apptio.com
  license:
    name: Proprietary
servers:
- url: https://api.apptio.com/v1
  description: Apptio TBM API
security:
- bearerAuth: []
tags:
- name: Cost Allocations
  description: Technology cost allocation management
paths:
  /cost-allocations:
    get:
      operationId: listCostAllocations
      summary: Apptio - List Cost Allocations
      description: Returns a list of technology cost allocations by period and cost center
      tags:
      - Cost Allocations
      parameters:
      - name: period
        in: query
        description: Filter by reporting period (YYYY-MM format)
        schema:
          type: string
      - name: costCenter
        in: query
        description: Filter by cost center or department
        schema:
          type: string
      - name: category
        in: query
        description: Filter by technology cost category
        schema:
          type: string
      responses:
        '200':
          description: A list of cost allocations
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      $ref: '#/components/schemas/CostAllocation'
                  total:
                    type: number
                    description: Total allocated amount
              examples:
                ListAllocationsExample:
                  x-microcks-default: true
                  summary: Example cost allocations list
                  value:
                    data:
                    - allocationId: ALLOC-2026-Q1-001
                      costCenter: Engineering
                      category: Cloud Infrastructure
                      period: 2026-01
                      amount: 125000.0
                      currency: USD
                      vendor: AWS
                    total: 125000.0
        '401':
          description: Unauthorized - invalid or missing authentication token
  /cost-allocations/{allocationId}:
    get:
      operationId: getCostAllocation
      summary: Apptio - Get Cost Allocation
      description: Returns details for a specific cost allocation record
      tags:
      - Cost Allocations
      parameters:
      - name: allocationId
        in: path
        required: true
        description: Unique cost allocation identifier
        schema:
          type: string
      responses:
        '200':
          description: Cost allocation details
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CostAllocation'
              examples:
                GetAllocationExample:
                  x-microcks-default: true
                  summary: Example cost allocation detail
                  value:
                    allocationId: ALLOC-2026-Q1-001
                    costCenter: Engineering
                    category: Cloud Infrastructure
                    period: 2026-01
                    amount: 125000.0
                    currency: USD
                    vendor: AWS
                    tags:
                      environment: production
                      team: platform
        '404':
          description: Cost allocation not found
        '401':
          description: Unauthorized - invalid or missing authentication token
components:
  schemas:
    CostAllocation:
      title: CostAllocation
      description: A technology cost allocation record
      type: object
      properties:
        allocationId:
          type: string
          description: Unique allocation identifier
        costCenter:
          type: string
          description: Cost center or department
        category:
          type: string
          description: Technology cost category
        period:
          type: string
          description: Reporting period (YYYY-MM)
        amount:
          type: number
          description: Allocated cost amount
        currency:
          type: string
          description: Currency code
        vendor:
          type: string
          description: Technology vendor or provider
        tags:
          type: object
          description: Custom metadata tags
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT