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OpenAPI Specification

openapi: 3.2.0
info:
  title: CompSniper Marketplace and Shipping Best Offer Prices API
  version: 2.3.0
  description: Public eBay (including up to 3 years of sold history), Poshmark, Mercari, TCGplayer, Grailed, Depop and PSA graded card (prices by grade, population) data plus a separate quote-only US shipping-rates product. Shipping quotes separate applicable services from carrier-packaging and content-restricted options, use an independent subscription and quota, and do not consume sold-comps requests or purchased credits.
  contact:
    name: CompSniper
    url: https://compsniper.com
servers:
- url: https://api.compsniper.com
security:
- bearerAuth: []
tags:
- name: Best Offer Prices
paths:
  /v1/best-offer-prices:
    get:
      summary: Look up saved accepted Best Offer prices
      description: 'Returns the saved accepted Best Offer price for up to 100 eBay item IDs seen in earlier bestOfferPrice=true searches. Free: does not count against monthly requests. Uses the normal per-minute rate limit.'
      operationId: getBestOfferPrices
      parameters:
      - name: itemIds
        in: query
        required: true
        schema:
          type: string
        description: 1 to 100 eBay item IDs, separated by commas.
      responses:
        '200':
          description: One entry per item ID with acceptedOfferPrice (string or null) and acceptedOfferPriceStatus (found, pending, not_available or unknown).
          content:
            application/json:
              schema:
                type: object
                properties:
                  items:
                    type: array
                    items:
                      type: object
                      properties:
                        itemId:
                          type: string
                        acceptedOfferPrice:
                          type:
                          - string
                          - 'null'
                        acceptedOfferPriceStatus:
                          type: string
                          enum:
                          - found
                          - pending
                          - not_available
                          - unknown
                  requestId:
                    type: string
        '400':
          description: itemIds missing or invalid.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
        '401':
          description: Missing or invalid API key.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
      tags:
      - Best Offer Prices
components:
  schemas:
    ApiError:
      type: object
      properties:
        error:
          type: string
        code:
          type: string
        retry_after:
          type: integer
          description: Seconds before a temporary rate_limited request may be retried.
        reset_at:
          type: string
          format: date-time
          description: Billing-cycle reset for quota_exceeded.
        plan:
          type: string
        quota:
          type: integer
        used:
          type: integer
        remaining:
          type: integer
        rollover_balance:
          type: integer
          description: Temporary carried-over requests remaining.
        upgrade_url:
          type: string
          format: uri
          description: Plan-management URL for quota_exceeded.
        credit_balance:
          type: integer
          description: Non-expiring purchased credits remaining.
        purchase_credits_url:
          type: string
          format: uri
          description: Credit purchase URL for quota_exceeded.
        subscription_url:
          type: string
          format: uri
          description: Shipping Rates plan URL for shipping_subscription_required or shipping_quota_exceeded.
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: 'Send your API key as ''Authorization: Bearer cs_live_...''.'