openapi: 3.0.3
info:
  title: BuyWhere Product Catalog Authentication 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: Authentication
  description: Agent registration and API key issuance.
paths:
  /auth/register:
    post:
      summary: Register Agent And Issue API Key
      description: Register an AI agent (or application) and receive a Bearer API key with a free-tier rate limit allocation.
      operationId: registerAgent
      tags:
      - Authentication
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/AgentRegistration'
            example:
              agent_name: shopping-copilot
              contact: dev@example.com
              use_case: Price comparison assistant for Singapore consumers.
      responses:
        '201':
          description: API key issued for the agent.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiKeyIssue'
              example:
                api_key: bw_free_2f7a9c0b1d8e4f3a9c0b1d8e4f3a9c0b
                tier: free
                rate_limit:
                  rpm: 60
                  daily: 1000
        '400':
          $ref: '#/components/responses/BadRequest'
components:
  responses:
    BadRequest:
      description: Invalid request.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  schemas:
    ApiKeyIssue:
      type: object
      properties:
        api_key:
          type: string
          description: Bearer token (prefixed with `bw_free_`, `bw_live_`, or `bw_partner_`).
        tier:
          type: string
          enum:
          - free
          - live
          - partner
        rate_limit:
          type: object
          properties:
            rpm:
              type: integer
              description: Requests per minute.
            daily:
              type: integer
              description: Daily request quota.
    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
    AgentRegistration:
      type: object
      required:
      - agent_name
      properties:
        agent_name:
          type: string
          description: Name or identifier of your agent.
        contact:
          type: string
          format: email
          description: Contact email (optional).
        use_case:
          type: string
          description: Brief description of your use case.
  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