Sendcloud OAuth2 API

openapi: 3.2.0
info:
  title: Event Subscriptions O Auth2 API
  version: 3.0.0
  description: '**BETA** - The Event Subscriptions API allows you to subscribe to parcel events and have them delivered to external endpoints such as webhooks or Klaviyo.


    This API uses a two-part model:

    - **Connections** define _where_ events are delivered (e.g., a webhook URL or a Klaviyo account).

    - **Subscriptions** define _which_ events are routed to a connection.


    All resources are scoped to the authenticated user''s organization.'
  contact:
    name: Sendcloud API Support
    email: contact@sendcloud.com
  license:
    name: Apache 2.0
    url: https://www.apache.org/licenses/LICENSE-2.0.html
servers:
- url: https://panel.sendcloud.sc/api/v3
  description: Sendcloud Production
tags:
- name: OAuth2
paths:
  /event-subscriptions/connections/{id}/authorization:
    parameters:
    - schema:
        type: integer
      in: path
      name: id
      description: The id of the connection to authorize.
      required: true
    post:
      summary: Start OAuth2 authorization
      description: Initiate the OAuth2 authorization flow for a connection that requires it (e.g., Klaviyo). Returns an authorization URL to redirect the user to.
      tags:
      - OAuth2
      operationId: sc-public-v3-scp-post-start_authorization
      security:
      - HTTPBasicAuth: []
      - OAuth2ClientCreds: []
      x-mint:
        href: /api/v3/event-subscriptions/start-oauth2-authorization
        content: "Start the OAuth2 authorization flow for a Klaviyo connection. This endpoint returns an authorization URL that the user should be redirected to in their browser.\n\nAfter the user authorizes access, the OAuth provider will redirect back to the Sendcloud callback URL, completing the connection setup.\n\n<Steps>\n  <Step title=\"Create a Klaviyo connection\">\n    Use the [Create a connection](/api/v3/event-subscriptions/create-a-connection) endpoint with `type: \"klaviyo\"`.\n  </Step>\n  <Step title=\"Start OAuth2 authorization\">\n    Call this endpoint to get the authorization URL.\n  </Step>\n  <Step title=\"Redirect the user\">\n    Open the `authorization_url` in the user's browser to complete the OAuth2 flow.\n  </Step>\n</Steps>"
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                description: OAuth2 authorization URL
                type: object
                properties:
                  data:
                    $ref: '#/components/schemas/connection-authorization-response'
              examples:
                AuthorizationUrl:
                  summary: OAuth2 authorization URL
                  value:
                    data:
                      authorization_url: https://www.klaviyo.com/oauth/authorize?client_id=sendcloud&response_type=code&redirect_uri=https%3A%2F%2Fpanel.sendcloud.sc%2Fapi%2Fv3%2Fevent-subscriptions%2Fconnections%2Fauthorization%2Fcallback&state=abc123
        '404':
          description: Not Found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/errors'
components:
  schemas:
    errors:
      title: Errors
      type: object
      description: A standardized format for errors in JSON:API responses.
      properties:
        errors:
          type:
          - array
          - object
          items:
            type: object
            allOf:
            - $ref: '#/components/schemas/ErrorObject'
            required:
            - status
            - code
            - detail
    connection-authorization-response:
      title: Authorization Response
      description: Response containing the OAuth2 authorization URL for connecting external services like Klaviyo.
      type: object
      properties:
        authorization_url:
          type: string
          format: uri
          description: The URL to redirect the user to for OAuth2 authorization with the external service.
    ErrorObject:
      title: Error
      type: object
      description: Error in a JSON:API error format
      properties:
        id:
          type: string
          description: A unique identifier for the error.
        links:
          type: object
          description: A set of hyperlinks that provide additional information about the error.
          properties:
            about:
              type: string
              description: A URL that provides additional information about the error.
        status:
          type: string
          format: int32
          description: The HTTP status code of the error.
          minLength: 1
        code:
          type: string
          description: A unique error code for the error, in snake case format.
          minLength: 1
          enum:
          - unknown_field
          - invalid
          - forbidden
          - invalid_choice
          - min_value
          - 'null'
          - not_found
          - required
          - not_a_list
          - non_field_errors
          - authentication_failed
          - validation_error
          - parcel_announcement_error
        title:
          type: string
          description: A short, human-readable summary of the error.
          minLength: 1
        detail:
          type: string
          description: A human-readable explanation of the error.
          minLength: 1
        source:
          type: object
          description: An object that identifies the source of the error within the request payload.
          properties:
            pointer:
              type: string
              description: A `JSON` pointer to the location of the error within the request payload.
            parameter:
              type: string
              description: The name of the `query` parameter that caused the error.
            header:
              type: string
              description: The name of the `header` parameter that caused the error.
        meta:
          type: object
          description: Additional metadata about the error.
  securitySchemes:
    HTTPBasicAuth:
      type: http
      description: Basic Authentication using API key and secrets is currently the main authentication mechanism.
      scheme: basic
    OAuth2ClientCreds:
      type: oauth2
      description: OAuth2 is a standardized protocol for authorization that allows users to share their private resources stored on one site with another site without having to provide their credentials. OAuth2 Client Credentials Grant workflow. This workflow is typically used for server-to-server interactions that require authorization to access specific resources.
      flows:
        clientCredentials:
          tokenUrl: https://account.sendcloud.com/oauth2/token/
          scopes:
            api: Default OAuth scope required to access Sendcloud API.