openapi: 3.2.0
info:
  title: Greenbrier Railcar Catalog Railcars API
  version: wp/v2
  description: Public, unauthenticated read access to the Greenbrier railcar product catalog behind www.gbrx.com — the site's `railcars` custom post type and its four purpose-built taxonomies (railcar type, cargo type, fluid capacity and cargo capacity).
  contact:
    name: The Greenbrier Companies
    url: https://www.gbrx.com/contact/
  x-derived-from: https://www.gbrx.com/wp-json/ (route-index document, saved verbatim at openapi/_original/greenbrier-cos-wp-json-route-index.json) + live anonymous GET samples
  x-derived-on: '2026-09-12'
  x-api-evangelist-note: 'Third-party profile. The Greenbrier Companies publishes no developer program; this documents the anonymously readable WordPress REST surface behind www.gbrx.com. Every path, parameter, type, default and enum below was read from the server''s own published route descriptor on 2026-09-12 — nothing is invented. Only the GET methods are documented: write methods exist on the same routes but require WordPress application-password credentials and are not part of the public surface.'
servers:
- url: https://www.gbrx.com/wp-json
  description: Greenbrier WordPress REST API
tags:
- name: Railcars
  description: Greenbrier railcar models — covered hoppers, tank cars, gondolas, boxcars, intermodal and automotive equipment.
paths:
  /wp/v2/railcars:
    get:
      operationId: listRailcars
      summary: List railcars
      description: Retrieve a paginated collection of published Greenbrier railcar models. Filterable by railcar_type, cargo_type, fluid_capacity and cargo_capacity taxonomy terms.
      tags:
      - Railcars
      parameters:
      - name: after
        in: query
        description: Limit response to posts published after a given ISO8601 compliant date.
        schema:
          type: string
          format: date-time
      - name: before
        in: query
        description: Limit response to posts published before a given ISO8601 compliant date.
        schema:
          type: string
          format: date-time
      - name: cargo_capacity
        in: query
        description: Limit result set to items with specific terms assigned in the cargo_capacity taxonomy.
        schema:
          type: object
      - name: cargo_capacity_exclude
        in: query
        description: Limit result set to items except those with specific terms assigned in the cargo_capacity taxonomy.
        schema:
          type: object
      - name: cargo_type
        in: query
        description: Limit result set to items with specific terms assigned in the cargo_type taxonomy.
        schema:
          type: object
      - name: cargo_type_exclude
        in: query
        description: Limit result set to items except those with specific terms assigned in the cargo_type taxonomy.
        schema:
          type: object
      - name: context
        in: query
        description: Scope under which the request is made; determines fields present in response.
        schema:
          type: string
          enum:
          - view
          - embed
          - edit
          default: view
      - name: exclude
        in: query
        description: Ensure result set excludes specific IDs.
        schema:
          type: array
          items:
            type: integer
          default: []
      - name: fluid_capacity
        in: query
        description: Limit result set to items with specific terms assigned in the fluid_capacity taxonomy.
        schema:
          type: object
      - name: fluid_capacity_exclude
        in: query
        description: Limit result set to items except those with specific terms assigned in the fluid_capacity taxonomy.
        schema:
          type: object
      - name: include
        in: query
        description: Limit result set to specific IDs.
        schema:
          type: array
          items:
            type: integer
          default: []
      - name: menu_order
        in: query
        description: Limit result set to posts with a specific menu_order value.
        schema:
          type: integer
      - name: modified_after
        in: query
        description: Limit response to posts modified after a given ISO8601 compliant date.
        schema:
          type: string
          format: date-time
      - name: modified_before
        in: query
        description: Limit response to posts modified before a given ISO8601 compliant date.
        schema:
          type: string
          format: date-time
      - name: offset
        in: query
        description: Offset the result set by a specific number of items.
        schema:
          type: integer
      - name: order
        in: query
        description: Order sort attribute ascending or descending.
        schema:
          type: string
          enum:
          - asc
          - desc
          default: desc
      - name: orderby
        in: query
        description: Sort collection by post attribute.
        schema:
          type: string
          enum:
          - author
          - date
          - id
          - include
          - modified
          - parent
          - relevance
          - slug
          - include_slugs
          - title
          - menu_order
          default: date
      - name: page
        in: query
        description: Current page of the collection.
        schema:
          type: integer
          default: 1
          minimum: 1
      - name: per_page
        in: query
        description: Maximum number of items to be returned in result set.
        schema:
          type: integer
          default: 10
          minimum: 1
          maximum: 100
      - name: railcar_type
        in: query
        description: Limit result set to items with specific terms assigned in the railcar_type taxonomy.
        schema:
          type: object
      - name: railcar_type_exclude
        in: query
        description: Limit result set to items except those with specific terms assigned in the railcar_type taxonomy.
        schema:
          type: object
      - name: search
        in: query
        description: Limit results to those matching a string.
        schema:
          type: string
      - name: search_columns
        in: query
        description: Array of column names to be searched.
        schema:
          type: array
          items:
            type: string
            enum:
            - post_title
            - post_content
            - post_excerpt
          default: []
      - name: search_semantics
        in: query
        description: How to interpret the search input.
        schema:
          type: string
          enum:
          - exact
      - name: slug
        in: query
        description: Limit result set to posts with one or more specific slugs.
        schema:
          type: array
          items:
            type: string
      - name: status
        in: query
        description: Limit result set to posts assigned one or more statuses.
        schema:
          type: array
          items:
            type: string
            enum:
            - publish
            - future
            - draft
            - pending
            - private
            - trash
            - auto-draft
            - inherit
            - request-pending
            - request-confirmed
            - request-failed
            - request-completed
            - acf-disabled
            - wc-pending
            - wc-processing
            - wc-on-hold
            - wc-completed
            - wc-cancelled
            - wc-refunded
            - wc-failed
            - wc-checkout-draft
            - email_sent
            - email_failed
            - email_scheduled
            - any
          default: publish
      - name: tags
        in: query
        description: Limit result set to items with specific terms assigned in the tags taxonomy.
        schema:
          type: object
      - name: tags_exclude
        in: query
        description: Limit result set to items except those with specific terms assigned in the tags taxonomy.
        schema:
          type: object
      - name: tax_relation
        in: query
        description: Limit result set based on relationship between multiple taxonomies.
        schema:
          type: string
          enum:
          - AND
          - OR
      responses:
        '200':
          description: A page of railcar records.
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/Railcar'
          headers:
            X-WP-Total:
              description: Total number of matching records.
              schema:
                type: integer
            X-WP-TotalPages:
              description: Total number of pages at the requested per_page size.
              schema:
                type: integer
        '400':
          description: Invalid parameter (rest_invalid_param).
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '404':
          description: No route or resource matched (rest_no_route / rest_post_invalid_id).
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
  /wp/v2/railcars/{id}:
    get:
      operationId: getRailcar
      summary: Get a railcar
      description: Retrieve a single railcar model by its numeric WordPress post ID.
      tags:
      - Railcars
      parameters:
      - name: context
        in: query
        description: Scope under which the request is made; determines fields present in response.
        schema:
          type: string
          enum:
          - view
          - embed
          - edit
          default: view
      - name: excerpt_length
        in: query
        description: Override the default excerpt length.
        schema:
          type: integer
      - name: id
        in: path
        description: Unique identifier for the post.
        required: true
        schema:
          type: integer
      - name: password
        in: query
        description: The password for the post if it is password protected.
        schema:
          type: string
      responses:
        '200':
          description: One railcar record.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Railcar'
        '400':
          description: Invalid parameter (rest_invalid_param).
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '404':
          description: No route or resource matched (rest_no_route / rest_post_invalid_id).
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
components:
  schemas:
    Error:
      type: object
      description: WordPress REST error envelope (WP_Error serialized).
      properties:
        code:
          type: string
        message:
          type: string
        data:
          type: object
          properties:
            status:
              type: integer
    Railcar:
      type: object
      properties:
        id:
          type: integer
        date:
          type: string
          format: date-time
        date_gmt:
          type: string
          format: date-time
        guid:
          type: object
          properties:
            rendered:
              type: string
              format: uri
        modified:
          type: string
          format: date-time
        modified_gmt:
          type: string
          format: date-time
        slug:
          type: string
        status:
          type: string
        type:
          type: string
        link:
          type: string
          format: uri
        title:
          type: object
          properties:
            rendered:
              type: string
        content:
          type: object
          properties:
            rendered:
              type: string
            protected:
              type: boolean
        excerpt:
          type: object
          properties:
            rendered:
              type: string
            protected:
              type: boolean
        featured_media:
          type: integer
        menu_order:
          type: integer
        template:
          type: string
        tags:
          type: array
          items:
            type: string
        railcar_type:
          type: array
          items:
            type: string
        cargo_type:
          type: array
          items:
            type: string
        fluid_capacity:
          type: array
          items:
            type: string
        cargo_capacity:
          type: array
          items:
            type: string
        class_list:
          type: array
          items:
            type: string
        acf:
          type: array
          items:
            type: string
        _links:
          type: object
          properties:
            self:
              type: array
              items:
                type: string
            collection:
              type: array
              items:
                type: string
            about:
              type: array
              items:
                type: string
            wp:featuredmedia:
              type: array
              items:
                type: string
            wp:attachment:
              type: array
              items:
                type: string
            wp:term:
              type: array
              items:
                type: string
            curies:
              type: array
              items:
                type: string
      description: Shape observed on a live anonymous GET of the Railcar collection on 2026-09-12.