Moody's Corporation Series API

openapi: 3.2.0
info:
  title: Moody's Data Buffet Series API
  version: 1.0.0
  description: The Moody's Analytics Data Buffet API provides programmatic access to international and subnational economic, demographic, and financial time series data and forecasts. It enables retrieval of individual series or baskets of data, supports frequency conversion, mathematical transformations, date range filtering, and vintage/versioning selection. Code samples are available in C#, Java, Python, and R.
  contact:
    name: Moody's Analytics
    url: https://www.economy.com/products/tools/data-buffet
  license:
    name: Moody's Analytics Terms of Use
    url: https://www.moodys.com/web/en/us/about/legal/terms-of-use.html
servers:
- url: https://api.economy.com/data/v1
  description: Moody's Analytics Data Buffet production server
security:
- oauth2: []
tags:
- name: Series
  description: Operations for retrieving individual and multi-series time series data
paths:
  /series:
    get:
      operationId: getSeries
      summary: Moody's Retrieve a Single Time Series
      description: Returns data for a single economic, demographic, or financial time series identified by its mnemonic. Supports frequency conversion, mathematical transformations, date range filtering, and vintage selection.
      tags:
      - Series
      parameters:
      - $ref: '#/components/parameters/mnemonic'
      - $ref: '#/components/parameters/freq'
      - $ref: '#/components/parameters/trans'
      - $ref: '#/components/parameters/startDate'
      - $ref: '#/components/parameters/endDate'
      - $ref: '#/components/parameters/vintage'
      responses:
        '200':
          description: Successfully retrieved time series data
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/SeriesResponse'
        '400':
          description: Invalid parameters
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '401':
          description: Unauthorized - invalid or expired token
        '404':
          description: Series mnemonic not found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '429':
          description: Rate limit exceeded
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
  /multi-series:
    post:
      operationId: getMultiSeries
      summary: Moody's Retrieve Multiple Time Series
      description: Returns data for up to 25 time series in a single request. Each series can have individual frequency, transformation, date range, and vintage parameters. Useful for efficiently fetching related economic indicators together.
      tags:
      - Series
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/MultiSeriesRequest'
      responses:
        '200':
          description: Successfully retrieved multiple time series
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MultiSeriesResponse'
        '400':
          description: Invalid request or exceeded 25 series limit
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '401':
          description: Unauthorized - invalid or expired token
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
components:
  parameters:
    mnemonic:
      name: mnemonic
      in: query
      description: The unique series mnemonic identifier. Mnemonics follow the Data Buffet naming convention, e.g., FGDP_US for US GDP or EMPLPAY.IUSA for US total nonfarm payrolls.
      required: true
      schema:
        type: string
      examples:
        usGdp:
          summary: US Gross Domestic Product
          value: FGDP_US
        usPayrolls:
          summary: US Total Nonfarm Payrolls
          value: EMPLPAY.IUSA
    startDate:
      name: startDate
      in: query
      description: The start date for the data range in YYYY-MM-DD format. If omitted, returns data from the beginning of the series.
      required: false
      schema:
        type: string
        format: date
    trans:
      name: trans
      in: query
      description: The mathematical transformation to apply to the series values. Supports common economic transformations.
      required: false
      schema:
        type: string
        enum:
        - Level
        - SimpleDifference
        - PercentChange
        - AnnualizedGrowth
        - YearOverYearPercentChange
        - CompoundAnnualGrowthRate
    freq:
      name: freq
      in: query
      description: The desired output frequency for the series. When specified, frequency conversion is applied. For example, converting quarterly GDP to annual.
      required: false
      schema:
        type: string
        enum:
        - A
        - Q
        - M
        - W
        - D
    endDate:
      name: endDate
      in: query
      description: The end date for the data range in YYYY-MM-DD format. If omitted, returns data through the latest available observation or forecast.
      required: false
      schema:
        type: string
        format: date
    vintage:
      name: vintage
      in: query
      description: The vintage date for accessing historical data revisions in YYYY-MM-DD format. If omitted, returns the latest vintage.
      required: false
      schema:
        type: string
        format: date
  schemas:
    SeriesRequest:
      type: object
      description: A single series request within a multi-series call.
      required:
      - mnemonic
      properties:
        mnemonic:
          type: string
          description: The unique series mnemonic identifier.
          example: example_value
        freq:
          type: string
          description: Desired output frequency.
          enum:
          - A
          - Q
          - M
          - W
          - D
          example: A
        trans:
          type: string
          description: Mathematical transformation to apply.
          enum:
          - Level
          - SimpleDifference
          - PercentChange
          - AnnualizedGrowth
          - YearOverYearPercentChange
          - CompoundAnnualGrowthRate
          example: Level
        startDate:
          type: string
          format: date
          description: Start date for the data range.
          example: '2026-01-15'
        endDate:
          type: string
          format: date
          description: End date for the data range.
          example: '2026-01-15'
        vintage:
          type: string
          format: date
          description: Vintage date for historical data revisions.
          example: '2026-01-15'
    MultiSeriesResponse:
      type: object
      description: Response containing multiple time series.
      required:
      - series
      properties:
        series:
          type: array
          description: Array of time series responses.
          items:
            $ref: '#/components/schemas/SeriesResponse'
          example: []
    SeriesResponse:
      type: object
      description: Response containing a single time series with metadata and observations.
      required:
      - mnemonic
      - description
      - frequency
      - data
      properties:
        mnemonic:
          type: string
          description: The unique series mnemonic identifier.
          example: example_value
        description:
          type: string
          description: Human-readable description of the series.
          example: A sample description.
        frequency:
          type: string
          description: The frequency of the returned data.
          enum:
          - Annual
          - Quarterly
          - Monthly
          - Weekly
          - Daily
          example: Annual
        source:
          type: string
          description: The original data source (e.g., BLS, BEA, IMF).
          example: example_value
        geography:
          type: string
          description: The geographic area the series covers.
          example: example_value
        units:
          type: string
          description: The unit of measurement for the series values (e.g., Billions of Chained 2017 Dollars, Thousands of Persons, Index).
          example: example_value
        transformation:
          type: string
          description: The transformation applied to the data, if any.
          example: example_value
        startDate:
          type: string
          format: date
          description: The start date of the returned data range.
          example: '2026-01-15'
        endDate:
          type: string
          format: date
          description: The end date of the returned data range.
          example: '2026-01-15'
        vintage:
          type: string
          format: date
          description: The vintage date of the returned data.
          example: '2026-01-15'
        lastUpdated:
          type: string
          format: date-time
          description: When the series was last updated in the repository.
          example: '2026-01-15T10:30:00Z'
        isForecast:
          type: boolean
          description: Whether the series contains forecast data from Moody's Analytics models.
          example: true
        data:
          type: array
          description: Array of date-value pairs representing the time series observations and/or forecasts.
          items:
            $ref: '#/components/schemas/Observation'
          example: []
    Observation:
      type: object
      description: A single time series observation or forecast data point.
      required:
      - date
      - value
      properties:
        date:
          type: string
          format: date
          description: The observation date in YYYY-MM-DD format. For frequencies coarser than daily, represents the period start date.
          example: '2026-01-15'
        value:
          type:
          - number
          - 'null'
          description: The observation value. Null indicates missing or unavailable data for this period.
          example: example_value
        status:
          type: string
          description: Status indicator for the data point.
          enum:
          - History
          - Forecast
          - Preliminary
          example: History
    MultiSeriesRequest:
      type: object
      description: Request body for retrieving multiple series simultaneously.
      required:
      - series
      properties:
        series:
          type: array
          description: Array of series requests. Maximum 25 series per request.
          maxItems: 25
          items:
            $ref: '#/components/schemas/SeriesRequest'
          example: []
    Error:
      type: object
      description: Standard error response.
      required:
      - code
      - message
      properties:
        code:
          type: string
          description: Machine-readable error code.
          example: example_value
        message:
          type: string
          description: Human-readable error message.
          example: example_value
        details:
          type: string
          description: Additional details about the error.
          example: example_value
  securitySchemes:
    oauth2:
      type: oauth2
      description: OAuth2 client credentials flow for authenticating API requests. Obtain client_id and client_secret from your Moody's Analytics account.
      flows:
        clientCredentials:
          tokenUrl: https://api.economy.com/data/v1/oauth2/token
          scopes: {}
externalDocs:
  description: Moody's Data Buffet API Documentation
  url: https://api.economy.com/data/v1/swagger