> ## Documentation Index
> Fetch the complete documentation index at: https://developers.appstle.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Get custom CSS styling configuration

> Retrieves custom CSS styles configured for subscription widgets and customer portal. These styles allow merchants to customize the visual appearance of subscription elements to match their brand.

**Use Cases:**
- Apply custom styling to subscription widgets on storefront
- Customize customer portal appearance
- Match brand colors and fonts
- Override default widget styles

**Authentication:** Requires API key authentication via X-API-Key header or api_key parameter



## OpenAPI

````yaml /memberships/admin-api-swagger.json get /api/external/v2/subscription-custom-csses/{id}
openapi: 3.0.1
info:
  description: >-
    Comprehensive API documentation for managing memberships, payments, and
    related operations. These APIs allow you to programmatically manage
    membership lifecycles, handle payments, configure products, and integrate
    membership functionality into your applications.
  title: Admin APIs
  version: 0.0.1
servers:
  - url: https://membership-admin.appstle.com
security: []
tags:
  - description: >-
      APIs for managing Shopify delivery profiles, shipping rates, zones, and
      free shipping configuration for subscription memberships
    name: Shipping & Delivery Profiles
  - description: >-
      APIs for retrieving historical discount code usage and redemption
      information for membership contracts
    name: Customer Discount History
  - description: >-
      APIs for managing membership cancellation flow settings including
      retention offers, survey questions, and cancel confirmation screens
    name: Cancellation Flow Configuration
  - description: >-
      APIs for managing membership billing attempts, recurring orders, payment
      retries, order history, and order skipping
    name: Billing & Orders
  - description: >-
      APIs for managing one-time product additions to upcoming subscription
      orders, including adding, retrieving, and removing one-off items
    name: One-Time Add-Ons
  - description: >-
      APIs for managing membership/subscription plan groups, including creating
      plans, configuring discounts, billing intervals, and assigning products to
      plans
    name: Membership Plans
  - description: >-
      APIs for managing subscription product bundles, bundle configurations,
      item grouping, and bundle-specific discount codes
    name: Product Bundles
  - description: >-
      APIs for retrieving custom CSS styles applied to subscription widgets and
      customer portal for theme customization
    name: Custom CSS Styling
  - description: >-
      APIs for managing customer portal settings including UI customization,
      text labels, feature toggles, and branding options for the member
      self-service portal
    name: Customer Portal Configuration
  - description: >-
      APIs for managing membership/subscription contracts including creation,
      updates, status changes, line items, discounts, and billing operations
    name: Membership Contracts
  - description: >-
      APIs for managing subscription bundle configuration settings including
      bundle behavior, pricing rules, and display options
    name: Bundle Settings
  - description: >-
      APIs for managing customer payment methods, payment tokens, and payment
      method retrieval for subscriptions
    name: Customer Payment Methods
  - description: >-
      APIs for retrieving product swap/substitution options allowing members to
      exchange subscription items based on configured swap rules and variant
      groups
    name: Product Swap Rules
  - description: >-
      APIs for retrieving product catalog, variants, pricing, and inventory
      information for subscription memberships.
    name: Product & Inventory Data
  - description: >-
      APIs for managing shop-level membership settings, configuration, and
      general store information.
    name: Shop Settings
  - description: >-
      APIs for performing bulk/mass operations on multiple membership contracts
      including status updates, product replacements, and billing date changes.
    name: Bulk Operations
paths:
  /api/external/v2/subscription-custom-csses/{id}:
    get:
      tags:
        - Custom CSS Styling
      summary: Get custom CSS styling configuration
      description: >-
        Retrieves custom CSS styles configured for subscription widgets and
        customer portal. These styles allow merchants to customize the visual
        appearance of subscription elements to match their brand.


        **Use Cases:**

        - Apply custom styling to subscription widgets on storefront

        - Customize customer portal appearance

        - Match brand colors and fonts

        - Override default widget styles


        **Authentication:** Requires API key authentication via X-API-Key header
        or api_key parameter
      operationId: getSubscriptionCustomCssV2
      parameters:
        - description: Shop identifier
          example: mystore.myshopify.com
          in: path
          name: id
          required: true
          schema:
            format: int64
            type: integer
        - description: API Key (Deprecated - Use Header X-API-Key instead)
          in: query
          name: api_key
          required: false
          schema:
            type: string
        - description: >-
            API Key for authentication (Preferred method - use this instead of
            api_key parameter)
          in: header
          name: X-API-Key
          required: false
          schema:
            type: string
      responses:
        '200':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/SubscriptionCustomCssDTO'
          description: Custom CSS configuration successfully retrieved
        '401':
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/SubscriptionCustomCssDTO'
          description: Authentication required
        '404':
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/SubscriptionCustomCssDTO'
          description: Custom CSS configuration not found
components:
  schemas:
    SubscriptionCustomCssDTO:
      properties:
        bundlingCSS:
          type: string
        bundlingIframeCSS:
          type: string
        customCss:
          type: string
        customerPoratlCSS:
          type: string
        id:
          format: int64
          type: integer
        shop:
          type: string
      required:
        - shop
      type: object

````