> ## Documentation Index > Fetch the complete documentation index at: https://juo.dev/llms.txt > Use this file to discover all available pages before exploring further. # Update subscription item > Used to update a subscription item. ## OpenAPI ````yaml openapi-admin.json PATCH /subscriptions/{subscriptionId}/items/{itemId} openapi: 3.1.0 info: title: Juo Admin API version: 1.0.0 description: >- Programmatic access to subscription management for merchants. ## Core Resources - **Subscriptions** — the central entity. Belongs to a Customer, contains Items (product variants) and Discounts. Lifecycle: `active` → `paused` or `cancelled`; `paused` → `active` or `cancelled`; `cancelled` → `active` (via reactivate). - **Items** — subscription items (product variants) (quantity, price, billing/delivery policies). - **Discounts** — applied to subscriptions by discount code or manually (percentage or fixed amount, targeting subscription items or shipping). - **Customers** — customers who own subscriptions and payment methods. - **Products / Variants** — catalog products and variants that can be assigned to subscription plans. - **Schedules** — a read-only projection of upcoming billing orders, derived from subscription state, active schedule adjustments, and triggered workflows. **Schedule adjustments never modify the subscription** — they apply changes to upcoming orders matching the specified criteria (by cycle, date, or both), which may cover one or more orders. For permanent changes (billing frequency, items, payment method, delivery address), update the subscription directly. - **Workflows** — interactive customer-facing flows (retention, dunning, onboarding). Contain Steps connected by Transitions and produce Runs on each execution. Supports A/B experiment steps. ## Authentication Every request requires: - `X-Juo-Admin-Api-Key` header — the merchant's Admin API key. - `X-Tenant-ID` header — the store identifier (myshopify domain, e.g. `my-store.myshopify.com`). servers: - url: https://api.juo.io/admin/v1 security: - AdminApiKey: [] - BearerToken: [] tags: - name: subscriptions description: >- Recurring billing agreements with customers. Manage lifecycle (pause, resume, cancel, reactivate), items, and discounts. - name: customers description: Customers who own subscriptions. Create and update customer records. - name: products description: >- Products and variants linked to subscription plans. Manage catalog and plan assignments. - name: schedules description: >- Read-only view of upcoming billing orders generated from subscription state, schedule adjustments, and workflows. Use schedule adjustments for targeted changes to upcoming orders (scoped by cycle number, date, or both) — they never alter the subscription itself. For permanent changes (billing frequency, items, payment method), update the subscription directly. - name: workflows description: >- Interactive customer-facing flows for retention, dunning, and onboarding. Define steps, publish, and track execution runs and experiments. paths: /subscriptions/{subscriptionId}/items/{itemId}: patch: tags: - subscriptions.items summary: Update a subscription item description: >- Updates a specific subscription item using merge-patch semantics. Can change the quantity, billing policy, or delivery policy for that item independently of subscription-level policies. parameters: - schema: format: uuid type: string in: path name: subscriptionId required: true description: The subscription identifier - schema: format: uuid type: string in: path name: itemId required: true description: The subscription item identifier - $ref: '#/components/parameters/TenantHeader' requestBody: content: application/json: schema: type: object properties: quantity: minimum: 1 description: Number of units ordered per billing cycle. type: integer example: 1 billingPolicy: oneOf: - type: 'null' - type: object properties: interval: anyOf: - type: string enum: - DAY - type: string enum: - WEEK - type: string enum: - MONTH - type: string enum: - YEAR intervalCount: minimum: 1 maximum: 365 type: integer anchors: type: array items: type: object properties: type: anyOf: - type: string enum: - WEEKDAY - type: string enum: - MONTHDAY - type: string enum: - YEARDAY day: minimum: 1 maximum: 31 type: integer month: minimum: 1 maximum: 12 type: - 'null' - integer cutoffDay: minimum: 1 maximum: 31 type: - 'null' - integer required: - type - day - month - cutoffDay minCycles: minimum: 1 type: - 'null' - integer maxCycles: minimum: 1 type: - 'null' - integer required: - interval - intervalCount - anchors - minCycles - maxCycles deliveryPolicy: oneOf: - type: 'null' - type: object properties: interval: anyOf: - type: string enum: - DAY - type: string enum: - WEEK - type: string enum: - MONTH - type: string enum: - YEAR intervalCount: minimum: 1 maximum: 365 type: integer anchors: type: array items: type: object properties: type: anyOf: - type: string enum: - WEEKDAY - type: string enum: - MONTHDAY - type: string enum: - YEARDAY day: minimum: 1 maximum: 31 type: integer month: minimum: 1 maximum: 12 type: - 'null' - integer cutoffDay: minimum: 1 maximum: 31 type: - 'null' - integer required: - type - day - month - cutoffDay required: - interval - intervalCount - anchors required: [] responses: '200': description: Default Response content: application/json: schema: $ref: '#/components/schemas/SubscriptionItem' '400': description: >- Bad request — invalid input or violated business rule (e.g., wrong subscription status for the requested operation). '401': description: Unauthorized — missing, expired, or invalid API key. '403': description: Forbidden — authenticated but not permitted to access this resource. '404': description: >- Not found — the resource does not exist or belongs to a different tenant. '422': description: >- Unprocessable entity — well-formed request that fails semantic validation. components: parameters: TenantHeader: name: X-Tenant-ID x-speakeasy-name-override: tenant x-speakeasy-globals-hidden: true in: header schema: type: string required: true description: >- Unique identifier of the tenant in the system (usually a store identifier) schemas: SubscriptionItem: type: object properties: id: format: uuid description: Unique subscription item identifier (UUID). type: string example: a1b2c3d4-e5f6-7890-abcd-ef1234567890 resource: type: string enum: - subscription-item title: minLength: 1 description: Product title. type: string example: Monthly Coffee Blend subtitle: minLength: 1 description: Variant title. Matches the variant title in most cases. type: - 'null' - string example: 250g / Ground quantity: minimum: 1 description: Number of units ordered per billing cycle. type: integer example: 1 totalPrice: minimum: 0 description: >- Final item price per billing cycle including all applicable discounts. type: number example: 24.99 recurringCycleLimit: minimum: 1 description: >- Maximum number of billing cycles this item remains on the subscription. The item is automatically removed once this limit is reached. Null means no limit. type: - 'null' - integer example: 3 canceledAt: format: date-time description: Cancellation date of the item. type: - 'null' - string billingPolicy: oneOf: - type: 'null' - type: object properties: interval: anyOf: - type: string enum: - DAY - type: string enum: - WEEK - type: string enum: - MONTH - type: string enum: - YEAR intervalCount: minimum: 1 maximum: 365 type: integer anchors: type: array items: type: object properties: type: anyOf: - type: string enum: - WEEKDAY - type: string enum: - MONTHDAY - type: string enum: - YEARDAY day: minimum: 1 maximum: 31 type: integer month: minimum: 1 maximum: 12 type: - 'null' - integer cutoffDay: minimum: 1 maximum: 31 type: - 'null' - integer required: - type - day - month - cutoffDay minCycles: minimum: 1 type: - 'null' - integer maxCycles: minimum: 1 type: - 'null' - integer required: - interval - intervalCount - anchors - minCycles - maxCycles title: BillingPolicy deliveryPolicy: oneOf: - type: 'null' - type: object properties: interval: anyOf: - type: string enum: - DAY - type: string enum: - WEEK - type: string enum: - MONTH - type: string enum: - YEAR intervalCount: minimum: 1 maximum: 365 type: integer anchors: type: array items: type: object properties: type: anyOf: - type: string enum: - WEEKDAY - type: string enum: - MONTHDAY - type: string enum: - YEARDAY day: minimum: 1 maximum: 31 type: integer month: minimum: 1 maximum: 12 type: - 'null' - integer cutoffDay: minimum: 1 maximum: 31 type: - 'null' - integer required: - type - day - month - cutoffDay required: - interval - intervalCount - anchors title: DeliveryPolicy customAttributes: description: >- Arbitrary key-value pairs attached to this subscription item. In the Customer API, attributes whose key starts with `_` are hidden and excluded. type: array items: type: object properties: key: minLength: 1 type: string value: type: string required: - key - value variant: description: >- ProductVariant `id` when not expanded, or the full `ProductVariant` object when the field name is included in the `expand` query parameter. Can be null. anyOf: - minLength: 1 type: string - $ref: '#/components/schemas/ProductVariant' - type: 'null' product: description: >- Product `id` when not expanded, or the full `Product` object when the field name is included in the `expand` query parameter. Can be null. anyOf: - minLength: 1 type: string - $ref: '#/components/schemas/Product' - type: 'null' required: - id - resource - title - subtitle - quantity - totalPrice - recurringCycleLimit - canceledAt - billingPolicy - deliveryPolicy - customAttributes - variant - product title: SubscriptionItem ProductVariant: type: object properties: id: minLength: 1 type: string title: minLength: 1 type: string image: oneOf: - type: 'null' - type: object properties: id: minLength: 1 type: string url: format: uri type: string altText: minLength: 1 type: - 'null' - string required: - id - url - altText price: type: number purchaseOptions: type: array items: type: object properties: name: minLength: 1 type: string price: type: number interval: type: object properties: intervalCount: type: number interval: type: string enum: - DAY - MONTH - WEEK - YEAR required: - intervalCount - interval required: - name - price - interval product: description: >- Product `id` when not expanded, or the full `Product` object when the field name is included in the `expand` query parameter. anyOf: - minLength: 1 type: string - $ref: '#/components/schemas/Product' planGroups: description: Subscription plan group IDs associated with this variant type: array items: minLength: 1 type: string required: - id - title - image - price - purchaseOptions - product - planGroups title: ProductVariant Product: type: object properties: id: minLength: 1 type: string title: minLength: 1 type: string image: oneOf: - type: 'null' - type: object properties: id: minLength: 1 type: string url: format: uri type: string altText: minLength: 1 type: - 'null' - string required: - id - url - altText collections: type: array items: type: object properties: handle: minLength: 1 type: string required: - handle planGroups: description: Subscription plan group IDs associated with this product type: array items: minLength: 1 type: string required: - id - title - image - collections - planGroups title: Product securitySchemes: AdminApiKey: type: apiKey name: X-Juo-Admin-Api-Key in: header description: >- Long-lived Admin API key issued from the Juo merchant portal. Pass as the `X-Juo-Admin-Api-Key` header. BearerToken: type: http scheme: bearer bearerFormat: JWT description: >- Short-lived JWT minted via the merchant browser-session flow. Carries the authenticated staff identity so that API calls are attributed to the specific staff user in the activity log. ````