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OpenAPI Specification

openapi: 3.2.0
info:
  title: State Street Alpha Data Platform Portfolios API
  description: The State Street Alpha Data Platform API provides institutional investment managers, asset owners, and wealth managers with programmatic access to their portfolio data across the front-to-back Alpha investment management platform.
  version: 1.0.0
  contact:
    name: State Street API Support
    email: api-support@statestreet.com
    url: https://developer.statestreet.com
  termsOfService: https://www.statestreet.com/us/en/individual-investor/tools-and-resources/terms-and-conditions
  license:
    name: Proprietary
    url: https://developer.statestreet.com/api-platform-standards
servers:
- url: https://api.statestreet.com/v1
  description: State Street API Production
security:
- OAuth2:
  - portfolio:read
  - positions:read
  - transactions:read
  - performance:read
  - risk:read
tags:
- name: Portfolios
  description: Portfolio and account management operations
paths:
  /portfolios:
    get:
      operationId: listPortfolios
      summary: List Portfolios
      description: Retrieve a list of portfolios accessible to the authenticated client application. Returns portfolio identifiers, names, types, base currencies, and inception dates. Supports pagination for large portfolio sets.
      tags:
      - Portfolios
      parameters:
      - name: pageSize
        in: query
        description: Number of portfolios per page (max 100)
        required: false
        schema:
          type: integer
          minimum: 1
          maximum: 100
          default: 25
      - name: pageToken
        in: query
        description: Pagination token from previous response
        required: false
        schema:
          type: string
      - name: portfolioType
        in: query
        description: Filter by portfolio type
        required: false
        schema:
          type: string
          enum:
          - MUTUAL_FUND
          - PENSION
          - INSURANCE
          - ENDOWMENT
          - ALTERNATIVES
          - ETF
          - SEPARATE_ACCOUNT
      - $ref: '#/components/parameters/XCorrelationId'
      responses:
        '200':
          description: List of portfolios
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PortfolioListResponse'
        '401':
          description: Authentication required
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '403':
          description: Insufficient scope
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '429':
          description: Rate limit exceeded
          headers:
            Retry-After:
              schema:
                type: integer
              description: Seconds to wait before retrying
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
  /portfolios/{portfolioId}:
    get:
      operationId: getPortfolio
      summary: Get Portfolio
      description: Retrieve detailed information for a specific portfolio including its current market value, base currency, inception date, benchmark assignment, and portfolio manager details.
      tags:
      - Portfolios
      parameters:
      - name: portfolioId
        in: path
        description: Unique portfolio identifier
        required: true
        schema:
          type: string
          example: PORT-12345
      - $ref: '#/components/parameters/XCorrelationId'
      responses:
        '200':
          description: Portfolio details
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Portfolio'
        '404':
          description: Portfolio not found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
components:
  parameters:
    XCorrelationId:
      name: X-Correlation-ID
      in: header
      description: Client-provided correlation ID for request tracing
      required: false
      schema:
        type: string
        format: uuid
        example: 550e8400-e29b-41d4-a716-446655440000
  schemas:
    Portfolio:
      type: object
      description: A State Street Alpha portfolio
      properties:
        portfolioId:
          type: string
          description: Unique portfolio identifier
          example: PORT-12345
        portfolioName:
          type: string
          description: Human-readable portfolio name
          example: US Large Cap Core Equity
        portfolioType:
          type: string
          description: Type of portfolio
          example: MUTUAL_FUND
        baseCurrency:
          type: string
          description: ISO 4217 currency code for the portfolio base currency
          example: USD
        inceptionDate:
          type: string
          format: date
          description: Portfolio inception date
          example: '2010-01-15'
        totalMarketValue:
          type: number
          format: double
          description: Current total market value in base currency
          example: 1250000000.0
        benchmarkId:
          type: string
          description: Benchmark identifier assigned to the portfolio
          example: SP500
        custodian:
          type: string
          description: Custodian holding the assets
          example: State Street Bank
    PortfolioListResponse:
      type: object
      description: Paginated list of portfolios
      properties:
        portfolios:
          type: array
          items:
            $ref: '#/components/schemas/Portfolio'
        nextPageToken:
          type: string
          description: Token to retrieve the next page of results
        totalCount:
          type: integer
          description: Total number of portfolios accessible
    Error:
      type: object
      description: Error response
      properties:
        code:
          type: string
          description: Error code
          example: UNAUTHORIZED
        message:
          type: string
          description: Human-readable error message
          example: Access token is missing or invalid.
        correlationId:
          type: string
          description: Request correlation ID for support reference
          format: uuid
  securitySchemes:
    OAuth2:
      type: oauth2
      description: OAuth 2.0 Client Credentials flow per RFC 6749 Section 4.4.2. Requires multifactor authentication for all user access.
      flows:
        clientCredentials:
          tokenUrl: https://api.statestreet.com/oauth/token
          scopes:
            portfolio:read: Read portfolio metadata and account information
            positions:read: Read portfolio positions and holdings
            transactions:read: Read transaction history
            performance:read: Read performance measurement and attribution data
            risk:read: Read risk analytics and exposure data