openapi: 3.0.3
info:
  title: Talon.One Account Customer Sessions API
  description: 'Talon.One is an enterprise promotion, loyalty, and incentives engine. This OpenAPI description models the two primary REST surfaces Talon.One exposes. The Integration API (paths under /v1 and /v2 for customer_sessions, customer_profiles, events, coupon_reservations, referrals, loyalty_programs, audiences) pushes real-time customer data into the rules engine and returns the effects to apply. The Management API (paths under /v1 for applications, campaigns, coupons, loyalty_programs, audiences, attributes, collections, accounts, users, exports) administers the resources that back the Campaign Manager. Talon.One runs as a managed, per-customer deployment: replace the server base URL with your own deployment domain. Authenticate with the Authorization header - Integration keys use the ApiKey-v1 prefix and Management keys use the ManagementKey-v1 prefix. Endpoints and paths here are grounded in Talon.One''s public documentation and SDKs; request and response schemas are honestly simplified.'
  version: '1.0'
  contact:
    name: Talon.One
    url: https://docs.talon.one
servers:
- url: https://yourbaseurl.talon.one
  description: Per-customer Talon.One deployment (replace yourbaseurl with your deployment domain)
security:
- integrationKey: []
- managementKey: []
tags:
- name: Customer Sessions
  description: Integration API - create and update customer sessions and receive effects.
paths:
  /v2/customer_sessions/{customerSessionId}:
    get:
      operationId: getCustomerSession
      tags:
      - Customer Sessions
      summary: Get customer session
      description: Retrieve the details of a customer session by its integration ID.
      security:
      - integrationKey: []
      parameters:
      - $ref: '#/components/parameters/customerSessionId'
      responses:
        '200':
          description: The customer session.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CustomerSession'
        '401':
          $ref: '#/components/responses/Unauthorized'
    put:
      operationId: updateCustomerSessionV2
      tags:
      - Customer Sessions
      summary: Update customer session
      description: Update or create a customer session and evaluate the Application's active campaigns against it. Returns the effects to apply - accepted coupons and referrals, discounts, and awarded loyalty points.
      security:
      - integrationKey: []
      parameters:
      - $ref: '#/components/parameters/customerSessionId'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/IntegrationRequest'
      responses:
        '200':
          description: The updated session and the effects to apply.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/IntegrationStateV2'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /v2/customer_sessions/{customerSessionId}/reopen:
    put:
      operationId: reopenCustomerSession
      tags:
      - Customer Sessions
      summary: Reopen customer session
      description: Reopen a closed customer session so it can be updated again.
      security:
      - integrationKey: []
      parameters:
      - $ref: '#/components/parameters/customerSessionId'
      responses:
        '200':
          description: The reopened session state.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/IntegrationStateV2'
  /v2/customer_sessions/{customerSessionId}/returns:
    post:
      operationId: returnCartItems
      tags:
      - Customer Sessions
      summary: Return cart items
      description: Create a return for one or more items in a closed customer session.
      security:
      - integrationKey: []
      parameters:
      - $ref: '#/components/parameters/customerSessionId'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
      responses:
        '200':
          description: The session state after the return.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/IntegrationStateV2'
components:
  schemas:
    IntegrationRequest:
      type: object
      description: A wrapper carrying the customer session payload and response controls.
      properties:
        customerSession:
          $ref: '#/components/schemas/CustomerSession'
        responseContent:
          type: array
          items:
            type: string
    CartItem:
      type: object
      properties:
        name:
          type: string
        sku:
          type: string
        quantity:
          type: integer
        price:
          type: number
        category:
          type: string
    CustomerSession:
      type: object
      description: A customer session evaluated against the Application's campaigns.
      properties:
        integrationId:
          type: string
        profileId:
          type: string
        state:
          type: string
          enum:
          - open
          - closed
          - partially_returned
          - cancelled
        cartItems:
          type: array
          items:
            $ref: '#/components/schemas/CartItem'
        couponCodes:
          type: array
          items:
            type: string
        referralCode:
          type: string
        total:
          type: number
        attributes:
          type: object
    IntegrationStateV2:
      type: object
      description: The evaluated session plus the effects to apply in the caller.
      properties:
        customerSession:
          $ref: '#/components/schemas/CustomerSession'
        effects:
          type: array
          items:
            $ref: '#/components/schemas/Effect'
        loyalty:
          type: object
    Error:
      type: object
      properties:
        message:
          type: string
        errors:
          type: array
          items:
            type: object
    Effect:
      type: object
      description: A single effect returned by the rules engine (e.g. setDiscount, acceptCoupon, addLoyaltyPoints).
      properties:
        campaignId:
          type: integer
        rulesetId:
          type: integer
        name:
          type: string
        props:
          type: object
  responses:
    Unauthorized:
      description: The API key is missing or invalid.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  parameters:
    customerSessionId:
      name: customerSessionId
      in: path
      required: true
      description: The integration ID of the customer session.
      schema:
        type: string
  securitySchemes:
    integrationKey:
      type: apiKey
      in: header
      name: Authorization
      description: 'Integration API key with the ApiKey-v1 prefix, e.g. header "Authorization: ApiKey-v1 <your-key>".'
    managementKey:
      type: apiKey
      in: header
      name: Authorization
      description: 'Management API key with the ManagementKey-v1 prefix, e.g. header "Authorization: ManagementKey-v1 <your-key>".'