> ## Documentation Index > Fetch the complete documentation index at: https://docs.voucherify.io/llms.txt > Use this file to discover all available pages before exploring further. # Get Category > Retrieve a category by the category ID. ## OpenAPI ````yaml /openapi/categories.json get /v1/categories/{categoryId} openapi: 3.0.1 info: title: Voucherify API - Categories version: v2018-08-01 description: >- Voucherify promotion engine REST API. Please see https://docs.voucherify.io/docs for more details. contact: name: Voucherify Team url: https://www.voucherify.io/contact-support email: support@voucherify.io termsOfService: https://www.voucherify.io/legal/subscription-agreement license: name: MIT url: https://github.com/voucherifyio/voucherify-js-sdk/blob/main/LICENSE servers: - url: https://{cluster}.voucherify.io description: Base URL variables: cluster: default: api enum: - api - us1.api - as1.api - download - us1.download - as1.download security: [] paths: /v1/categories/{categoryId}: parameters: - schema: $ref: '#/components/schemas/ParameterCategoryId' name: categoryId in: path required: true description: Unique category ID assigned by Voucherify. get: tags: - Categories summary: Get Category description: Retrieve a category by the category ID. operationId: get-category parameters: [] responses: '200': description: Returns a category object. content: application/json: schema: $ref: '#/components/schemas/CategoriesGetResponseBody' examples: Example: value: id: cat_0b5f49fb31c3bf6ab0 name: Sixth hierarchy: 6 created_at: '2022-07-13T06:21:36.852Z' object: category security: - X-App-Id: [] X-App-Token: [] - X-Voucherify-OAuth: - api - categories components: schemas: ParameterCategoryId: type: string example: cat_0bb81a481615a37b5e CategoriesGetResponseBody: type: object title: Categories Get Response Body description: Response body schema for **GET** `v1/categories/{categoryId}`. allOf: - $ref: '#/components/schemas/Category' Category: title: Category description: This is an object representing a category. type: object properties: id: type: string description: Unique category ID assigned by Voucherify. name: type: string description: Category name. hierarchy: type: integer description: >- Category hierarchy. Categories with lower hierarchy are processed before categories with higher hierarchy value. minimum: 0 object: type: string default: category enum: - category description: >- The type of the object represented by the JSON. This object stores information about the category. created_at: type: string description: >- Timestamp representing the date and time when the category was created. The value is shown in the ISO 8601 format. example: '2022-07-14T10:45:13.156Z' format: date-time updated_at: type: string example: '2022-08-16T10:52:08.094Z' description: >- Timestamp representing the date and time when the category was updated. The value is shown in the ISO 8601 format. format: date-time required: - id - name - hierarchy - created_at - object securitySchemes: X-App-Id: type: apiKey name: X-App-Id in: header X-App-Token: type: apiKey name: X-App-Token in: header X-Voucherify-OAuth: type: oauth2 flows: implicit: authorizationUrl: https://api.voucherify.io/v1/oauth/token scopes: api: Gives access to whole server-side API. vouchers: >- Gives access to all endpoints and methods starting with `v1/vouchers`. client_api: Gives access to whole client-side API. client_vouchers: >- Gives access to all endpoints and methods starting with `/client/v1/vouchers`. promotions: >- Gives access to all endpoints and methods starting with `/v1/promotions`. client_promotions: >- Gives access to all endpoints and methods starting with `/client/v1/promotions` campaigns: >- Gives access to all endpoints and methods starting with `v1/campaigns`. client_publish: >- Gives access to all endpoints and methods starting with `/client/v1/publish`. exports: >- Gives access to all endpoints and methods starting with `/v1/exports`. publications: >- Gives access to all endpoints and methods starting with `/v1/publications`. client_validate: >- Gives access to all endpoints and methods starting with `/client/v1/validate`. validations: >- Gives access to all endpoints and methods starting with `/v1/validations`. client_validations: >- Gives access to all endpoints and methods starting with `/client/v1/validations`. qualifications: >- Gives access to all endpoints and methods starting with `/v1/qualifications`. client_qualifications: >- Gives access to all endpoints and methods starting with `/client/v1/qualifications`. client_redeem: >- Gives access to all endpoints and methods starting with `/client/v1/redeem redemptions: >- Gives access to all endpoints and methods starting with `/v1/redemptions`. client_redemptions: >- Gives access to all endpoints and methods starting with `/client/v1/redemptions` customers: >- Gives access to all endpoints and methods starting with `/v1/customers`. client_customers: >- Gives access to all endpoints and methods starting with `/client/v1/customers`. orders: >- Gives access to all endpoints and methods starting with `/v1/orders`. products: >- Gives access to all endpoints and methods starting with `/v1/products`. skus: >- Gives access to all endpoints and methods starting with `/v1/SKUs`. validation-rules: >- Gives access to all endpoints and methods starting with `/v1/validation-rules`. validation-rules-assignments: >- Gives access to all endpoints and methods starting with `/v1/validation-rules-assignments segments: >- Gives access to all endpoints and methods starting with `/v1/segments`. events: >- Gives access to all endpoints and methods starting with `/v1/events`. client_events: >- Gives access to all endpoints and methods starting with `client/v1/events`. rewards: >- Gives access to all endpoints and methods starting with `/v1/rewards`. assets: >- Gives access to all endpoints and methods starting with `/v1/assets`. task-results: >- Gives access to all endpoints and methods starting with `/v1/task-results`. loyalties: >- Gives access to all endpoints and methods starting with `/v1/loyalties`. client_consents: >- Gives access to all endpoints and methods starting with `client/v1/consents`. consents: >- Gives access to all endpoints and methods starting with `/v1/consents`. async-actions: >- Gives access to all endpoints and methods starting with `/v1/async-actions`. product-collections: >- Gives access to all endpoints and methods starting with `/v1/product-collections`. categories: >- Gives access to all endpoints and methods starting with `/v1/categories`. metadata-schemas: >- Gives access to all endpoints and methods starting with `/v1/metadata-schemas`. locations: >- Gives access to all endpoints and methods starting with `/v1/locations`. referrals: >- Gives access to all endpoints and methods starting with `/v1/referrals`. trash-bin: >- Gives access to all endpoints and methods starting with `/v1/trash-bin`. templates: >- Gives access to all endpoints and methods starting with `/v1/templates`. ````