> ## 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 valid membership contract IDs for customer > Retrieves a list of all valid (active, paused, or pending) membership contract IDs associated with a specific customer. This endpoint is useful for quickly checking which memberships a customer has without retrieving full contract details. **Key Features:** - **Quick Lookup**: Returns only contract IDs, not full contract details - **Active Memberships Only**: Excludes cancelled or expired contracts - **Set Response**: Returns unique contract IDs (no duplicates) - **Fast Performance**: Lightweight query for list views **Included Membership Statuses:** - **ACTIVE**: Currently active recurring memberships - **PAUSED**: Temporarily paused but valid memberships - **PENDING**: Scheduled to start in the future **Excluded Membership Statuses:** - **CANCELLED**: Customer-cancelled memberships - **EXPIRED**: Reached max cycles or end date - **FAILED**: Failed billing with no recovery **Common Use Cases:** - **Membership Count**: Quickly determine how many active memberships a customer has - **Access Control**: Verify customer has valid memberships before showing portal - **List Navigation**: Build dropdown or list of customer's memberships - **Bulk Operations**: Get all contract IDs for batch processing - **Validation**: Check if customer has any active memberships - **Dashboard Display**: Show membership count without full data **Example Response:** ```json [12345, 12346, 12389] ``` **Parameters:** - **customerId** (required, path): The Shopify customer ID **Response:** Returns a Set of Long values representing valid membership contract IDs **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-customers/valid/{customerId} 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 retrieving product swap/substitution options allowing members to exchange membership items based on configured swap rules and variant groups name: Product Swap Rules - description: >- APIs for managing customer payment methods, payment tokens, and payment method retrieval for memberships name: Customer Payment Methods - description: >- APIs for managing one-time product additions to upcoming membership orders, including adding, retrieving, and removing one-off items name: One-Time Add-Ons - description: >- APIs for managing membership contracts including creation, updates, status changes, line items, discounts, and billing operations name: Membership Contracts - description: >- APIs for retrieving historical discount code usage and redemption information for membership contracts name: Customer Discount History - 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 retrieving custom CSS styles applied to membership widgets and customer portal for theme customization name: Custom CSS Styling - 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 Shopify delivery profiles, shipping rates, zones, and free shipping configuration for membership memberships name: Shipping & Delivery Profiles - description: >- APIs for managing membership plan groups, including creating plans, configuring discounts, billing intervals, and assigning products to plans name: Membership Plans - description: >- APIs for retrieving product catalog, variants, pricing, and inventory information for 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-customers/valid/{customerId}: get: tags: - Membership Contracts summary: Get valid membership contract IDs for customer description: >- Retrieves a list of all valid (active, paused, or pending) membership contract IDs associated with a specific customer. This endpoint is useful for quickly checking which memberships a customer has without retrieving full contract details. **Key Features:** - **Quick Lookup**: Returns only contract IDs, not full contract details - **Active Memberships Only**: Excludes cancelled or expired contracts - **Set Response**: Returns unique contract IDs (no duplicates) - **Fast Performance**: Lightweight query for list views **Included Membership Statuses:** - **ACTIVE**: Currently active recurring memberships - **PAUSED**: Temporarily paused but valid memberships - **PENDING**: Scheduled to start in the future **Excluded Membership Statuses:** - **CANCELLED**: Customer-cancelled memberships - **EXPIRED**: Reached max cycles or end date - **FAILED**: Failed billing with no recovery **Common Use Cases:** - **Membership Count**: Quickly determine how many active memberships a customer has - **Access Control**: Verify customer has valid memberships before showing portal - **List Navigation**: Build dropdown or list of customer's memberships - **Bulk Operations**: Get all contract IDs for batch processing - **Validation**: Check if customer has any active memberships - **Dashboard Display**: Show membership count without full data **Example Response:** ```json [12345, 12346, 12389] ``` **Parameters:** - **customerId** (required, path): The Shopify customer ID **Response:** Returns a Set of Long values representing valid membership contract IDs **Authentication:** Requires API key authentication via X-API-Key header or api_key parameter operationId: getValidSubscriptionCustomerV2 parameters: - description: Shopify customer ID example: 6789012345 in: path name: customerId 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 - in: header name: X-API-Key required: false schema: type: string responses: '200': content: application/json: schema: type: string description: >- Valid membership contract IDs retrieved successfully (may be empty set if customer has no active memberships) '400': content: '*/*': schema: items: format: int64 type: integer type: array uniqueItems: true description: Invalid customer ID format '401': content: '*/*': schema: items: format: int64 type: integer type: array uniqueItems: true description: Authentication required - invalid or missing API key '404': content: '*/*': schema: items: format: int64 type: integer type: array uniqueItems: true description: Customer not found ````