BuyWhere Categories API

openapi: 3.0.3
info:
  title: BuyWhere Product Catalog Authentication Categories API
  version: '1'
  description: 'Agent-native product catalog API for Southeast Asia and US commerce. Search 1.5M+

    products across Shopee, Lazada, Amazon, Walmart, FairPrice, Carousell, Best Denki,

    and 20+ e-commerce platforms. Compare prices, discover deals, and find best prices

    through REST or MCP (Model Context Protocol).


    Responses are structured for LLM and agent consumption (Schema.org-compatible

    `Product` / `Offer` / `ItemList` shapes). Each product carries normalized

    `structured_specs` (brand, model, size, color) and `comparison_attributes`

    so agents can reason and rank without scraping.


    BuyWhere is MCP-native — the same operations are exposed at

    `POST https://api.buywhere.ai/mcp` for MCP-compatible clients, with a hosted

    HTTP transport and a published `@buywhere/mcp-server` STDIO package.

    '
  contact:
    name: BuyWhere API
    email: api@buywhere.ai
    url: https://api.buywhere.ai/
  termsOfService: https://buywhere.ai/terms
  license:
    name: Commercial
    url: https://buywhere.ai/terms
servers:
- url: https://api.buywhere.ai/v1
  description: Production REST API
tags:
- name: Categories
  description: Product taxonomy and category browsing.
paths:
  /categories:
    get:
      summary: List Top-Level Product Categories
      description: List top-level product categories with slug, name, and product count.
      operationId: listCategories
      tags:
      - Categories
      security:
      - BearerAuth: []
      parameters:
      - name: currency
        in: query
        schema:
          type: string
          default: SGD
      responses:
        '200':
          description: Category list with slug, name, and product_count.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CategoryList'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /categories/{slug}:
    get:
      summary: Get Products Within A Category
      description: Returns products in the specified category along with any subcategories.
      operationId: getCategoryProducts
      tags:
      - Categories
      security:
      - BearerAuth: []
      parameters:
      - name: slug
        in: path
        required: true
        schema:
          type: string
        description: Category slug (from `/categories`).
      - name: currency
        in: query
        schema:
          type: string
          default: SGD
      - name: limit
        in: query
        schema:
          type: integer
          default: 20
          maximum: 100
      - name: offset
        in: query
        schema:
          type: integer
          default: 0
      responses:
        '200':
          description: Category detail with subcategories and products.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CategoryDetail'
        '404':
          $ref: '#/components/responses/NotFound'
        '401':
          $ref: '#/components/responses/Unauthorized'
components:
  schemas:
    Category:
      type: object
      properties:
        slug:
          type: string
        name:
          type: string
        product_count:
          type: integer
        parent_slug:
          type: string
          nullable: true
    CategoryList:
      type: object
      properties:
        data:
          type: array
          items:
            $ref: '#/components/schemas/Category'
    CategoryDetail:
      type: object
      properties:
        category:
          $ref: '#/components/schemas/Category'
        subcategories:
          type: array
          items:
            $ref: '#/components/schemas/Category'
        products:
          type: array
          items:
            $ref: '#/components/schemas/Product'
        meta:
          type: object
          properties:
            total:
              type: integer
            limit:
              type: integer
            offset:
              type: integer
    Error:
      type: object
      properties:
        error:
          type: object
          properties:
            code:
              type: string
              enum:
              - invalid_params
              - not_found
              - rate_limited
              - unauthorized
              - internal_error
            message:
              type: string
            request_id:
              type: string
    Product:
      type: object
      description: Schema.org-compatible product representation.
      properties:
        id:
          type: string
          format: uuid
        title:
          type: string
        description:
          type: string
        brand:
          type: string
        domain:
          type: string
          description: Source merchant platform (lazada, shopee, amazon, walmart, etc.).
        url:
          type: string
          format: uri
          description: Canonical merchant product URL.
        image_url:
          type: string
          format: uri
        price:
          type: number
        original_price:
          type: number
        discount_pct:
          type: number
        currency:
          type: string
          example: SGD
        country_code:
          type: string
          example: SG
        rating:
          type: number
        review_count:
          type: integer
        category_path:
          type: array
          items:
            type: string
        structured_specs:
          type: object
          description: Normalized structured attributes (brand, model, size, color, etc.).
          additionalProperties: true
        comparison_attributes:
          type: object
          description: Attributes pre-normalized for agent comparison reasoning.
          additionalProperties: true
        normalized_price_usd:
          type: number
        availability:
          type: string
          enum:
          - in_stock
          - out_of_stock
          - preorder
          - limited
        updated_at:
          type: string
          format: date-time
  responses:
    Unauthorized:
      description: Missing or invalid API key.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    NotFound:
      description: Resource not found.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  securitySchemes:
    BearerAuth:
      type: http
      scheme: bearer
      description: 'Pass your API key as a Bearer token. Get a free key at `POST /v1/auth/register`.

        Tiers: `bw_free_*` (60 rpm), `bw_live_*` (600 rpm), `bw_partner_*` (unlimited).

        '
externalDocs:
  description: BuyWhere developer documentation and MCP guide
  url: https://api.buywhere.ai/docs/guides/mcp