> ## Documentation Index > Fetch the complete documentation index at: https://spreecommerce.org/docs/llms.txt > Use this file to discover all available pages before exploring further. # Get an option type > Returns a single option type by ID, including its option values. **Required scope:** `read_products` (for API-key authentication). ## OpenAPI ````yaml /api-reference/admin.yaml get /api/v3/admin/option_types/{id} openapi: 3.0.3 info: title: Admin API contact: name: Spree Commerce url: https://spreecommerce.org email: hello@spreecommerce.org description: > Spree Admin API v3 - Administrative API for managing products, orders, and store settings. ## Authentication The Admin API requires a secret API key passed in the `x-spree-api-key` header. Secret API keys can be generated in the Spree admin dashboard. ## Response Format All responses are JSON. List endpoints return paginated responses with `data` and `meta` keys. Single resource endpoints return a flat JSON object. ## Resource IDs Every resource is identified by an opaque string ID (e.g. `prod_86Rf07xd4z`, `variant_k5nR8xLq`, `or_UkLWZg9DAJ`). Use these IDs everywhere — URL paths, request bodies, and Ransack filters all accept them directly. ## Error Handling Errors return a consistent format: ```json { "error": { "code": "validation_error", "message": "Validation failed", "details": { "name": ["can't be blank"] } } } ``` version: v3 servers: - url: http://{defaultHost} variables: defaultHost: default: localhost:3000 security: [] tags: - name: Authentication description: Admin user login, logout, token refresh, and current user profile - name: Allowed Origins description: CORS allowlist for storefront and admin client origins - name: API Keys description: Secret and publishable API keys - name: Categories description: >- Hierarchical product categories — tree management, repositioning, and product assignments - name: Channels description: >- Sales channels, product publication across channels, and per-channel order routing rules - name: Custom Fields description: >- Custom field definitions for products, variants, customers, and other resources - name: Customer Groups description: >- Customer groups for segmenting customers (e.g. wholesale, VIP) used by pricing and promotions - name: Customers description: Customer profiles, addresses, credit cards, and store credits - name: Exports description: Async CSV exports of admin resources - name: Fulfillments description: Order fulfillments — shipments, fulfill, cancel, resume, split - name: Gift Cards description: Gift cards and gift card batches - name: Imports description: >- Async CSV imports of admin resources, with per-row status and failed-row retry - name: Markets description: >- Markets — geographic groupings of countries used for pricing, tax, and fulfillment rules - name: Option Types description: >- Option types and option values used to build product variants (e.g. Size, Color) - name: Orders description: Orders, order items, applied gift cards, and applied store credits - name: Payment Methods description: Configured payment providers and their available types - name: Payments description: Order payments — list, capture, void - name: Pricing description: >- Prices and price lists for currency-, market-, and customer-group-specific pricing - name: Products description: >- Products, taxons/categories, product custom field values, and bulk product operations - name: Promotions description: Promotions, promotion rules, promotion actions, and coupon codes - name: Refunds description: Order refunds - name: Settings description: Store-level settings — store profile, tags, store credit categories - name: Staff description: Admin users, roles, and invitations to the store - name: Stock Locations description: Warehouses and physical fulfillment locations - name: Variants description: >- Product variants — the individual SKUs (size/color combinations) sold under a product - name: Webhooks description: Webhook endpoints and webhook delivery history paths: /api/v3/admin/option_types/{id}: get: tags: - Option Types summary: Get an option type description: |- Returns a single option type by ID, including its option values. **Required scope:** `read_products` (for API-key authentication). parameters: - name: x-spree-api-key in: header required: true schema: type: string - name: Authorization in: header required: true description: Bearer token for admin authentication schema: type: string - name: id in: path required: true description: Option type ID schema: type: string - name: expand in: query required: false description: >- Comma-separated associations to expand (e.g., option_values). Use dot notation for nested expand (max 4 levels). schema: type: string - name: fields in: query required: false description: >- Comma-separated list of fields to include (e.g., name,label,position). id is always included. schema: type: string responses: '200': description: option type found content: application/json: example: id: opt_UkLWZg9DAJ name: foo-size-5 label: Size position: 1 kind: dropdown metadata: {} filterable: true created_at: '2026-07-24T18:11:12.811Z' updated_at: '2026-07-24T18:11:12.811Z' schema: $ref: '#/components/schemas/OptionType' '404': description: option type not found content: application/json: example: error: code: record_not_found message: Option type not found schema: $ref: '#/components/schemas/ErrorResponse' security: - api_key: [] bearer_auth: [] x-codeSamples: - lang: javascript label: Spree Admin SDK source: |- import { createAdminClient } from '@spree/admin-sdk' const client = createAdminClient({ baseUrl: 'https://your-store.com', secretKey: 'sk_xxx', }) const optionType = await client.optionTypes.get('ot_UkLWZg9DAJ') - lang: bash label: Spree CLI source: spree api get /option_types/{id} components: schemas: OptionType: type: object properties: id: type: string name: type: string label: type: string position: type: number kind: type: string translations: type: object metadata: type: object filterable: type: boolean created_at: type: string updated_at: type: string option_values: type: array items: $ref: '#/components/schemas/OptionValue' required: - id - name - label - position - kind - metadata - filterable - created_at - updated_at x-typelizer: true ErrorResponse: type: object properties: error: type: object properties: code: type: string example: record_not_found message: type: string example: Record not found details: type: object description: Field-specific validation errors nullable: true example: name: - is too short - is required email: - is invalid required: - code - message required: - error example: error: code: validation_error message: Validation failed details: name: - is too short email: - is invalid OptionValue: type: object properties: id: type: string option_type_id: type: string name: type: string label: type: string position: type: number color_code: type: string nullable: true option_type_name: type: string option_type_label: type: string image_url: type: string nullable: true metadata: type: object created_at: type: string updated_at: type: string option_type: $ref: '#/components/schemas/OptionType' required: - id - option_type_id - name - label - position - color_code - option_type_name - option_type_label - image_url - metadata - created_at - updated_at x-typelizer: true securitySchemes: api_key: type: apiKey name: x-spree-api-key in: header description: Secret API key for admin access bearer_auth: type: http scheme: bearer bearerFormat: JWT description: JWT token for admin user authentication ````