Gemnote Greeting Cards API

openapi: 3.0.3
info:
  title: Gemnote Gifts Greeting Cards API
  version: v1
  description: The Gemnote API lets partners send custom gifts and greeting cards programmatically and track their shipments. Responses follow a JSON:API-style envelope (data / type / attributes / relationships, with links + meta for pagination). Authentication is a token issued by your Gemnote account manager, passed in the AUTHORIZATION header. A sandbox environment (https://sandbox.gemnote.com/) mirrors production for safe testing; sandbox tokens begin with `t_` and production tokens begin with `p_`.
  contact:
    name: Gemnote
    url: https://www.gemnote.com/
  x-provenance:
    generated: '2026-07-19'
    method: generated
    source: https://github.com/gemnote/api (README.md, gift.md, greeting_card.md, shipment.md)
servers:
- url: https://api.gemnote.com
  description: Production
- url: https://sandbox.gemnote.com
  description: Sandbox
security:
- AuthorizationToken: []
tags:
- name: Greeting Cards
  description: The catalog of greeting cards / postcards available to include.
paths:
  /api/v1/greeting_cards/:
    get:
      operationId: listGreetingCards
      summary: List all greeting cards
      description: Retrieves a paginated collection of greeting cards.
      tags:
      - Greeting Cards
      parameters:
      - $ref: '#/components/parameters/PageNumber'
      - $ref: '#/components/parameters/PageSize'
      responses:
        '200':
          description: A paginated collection of greeting cards.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/GreetingCardListResponse'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /api/v1/greeting_cards/{greeting_card_id}:
    get:
      operationId: getGreetingCard
      summary: Retrieve a single greeting card
      description: Retrieves a single greeting card by its identifier.
      tags:
      - Greeting Cards
      parameters:
      - name: greeting_card_id
        in: path
        required: true
        description: The identifier of the greeting card.
        schema:
          type: string
      responses:
        '200':
          description: The requested greeting card.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/GreetingCardResponse'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
components:
  parameters:
    PageSize:
      name: page[size]
      in: query
      required: false
      description: The number of items to return per page.
      schema:
        type: integer
        minimum: 1
    PageNumber:
      name: page[number]
      in: query
      required: false
      description: The 1-based page number to retrieve.
      schema:
        type: integer
        minimum: 1
  schemas:
    GreetingCardListResponse:
      type: object
      properties:
        data:
          type: array
          items:
            $ref: '#/components/schemas/GreetingCard'
        links:
          $ref: '#/components/schemas/PaginationLinks'
        meta:
          $ref: '#/components/schemas/PaginationMeta'
    GreetingCard:
      type: object
      properties:
        id:
          type: string
        type:
          type: string
          example: greeting_cards
        attributes:
          type: object
          properties:
            name:
              type: string
    GreetingCardResponse:
      type: object
      properties:
        data:
          $ref: '#/components/schemas/GreetingCard'
    PaginationMeta:
      type: object
      properties:
        totalPages:
          type: integer
        totalItems:
          type: integer
    PaginationLinks:
      type: object
      properties:
        self:
          type: string
          nullable: true
        first:
          type: string
          nullable: true
        prev:
          type: string
          nullable: true
        next:
          type: string
          nullable: true
        last:
          type: string
          nullable: true
  responses:
    NotFound:
      description: The requested resource does not exist.
    Unauthorized:
      description: The AUTHORIZATION token is missing or invalid.
  securitySchemes:
    AuthorizationToken:
      type: apiKey
      in: header
      name: AUTHORIZATION
      description: A token issued by your Gemnote account manager. Sandbox tokens begin with `t_` and production tokens begin with `p_`.