SMKlog Quote API

openapi: 3.2.0
info:
  title: SMKlog Quote API
  version: 1.4.0
  description: 'Live parcel rates from USPS, UPS, FedEx and DHL Express for a single shipment sent from a US origin: inside the US, or to Canada, the UK, Germany or Australia.'
  termsOfService: https://smklog.com/terms
  contact:
    name: SMKlog
    email: info@smklog.com
    url: https://smklog.com/api
servers:
- url: https://quote-api.smklog.com
tags:
- name: Quote
paths:
  /quote:
    post:
      operationId: getParcelQuote
      summary: Price one parcel from a US origin across USPS, UPS and FedEx (plus DHL Express…
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - quantity
              - from_postal_code
              - to_postal_code
              properties:
                product:
                  type: string
                  description: Plain-words item description, e.g. "Yamaha FG800 acoustic guitar in a hard case". Required unless product_url is given. Drives the box and weight estimate when dimensions are omitted.
                product_url:
                  type: string
                  description: Store product page URL; the item is identified from the page. Alternative to product.
                quantity:
                  type: integer
                  minimum: 1
                  default: 1
                  description: Identical parcels. 1 is priced online; more routes the request to a person (mode freight_manager, empty rates).
                from_postal_code:
                  type: string
                  description: 5-digit US ZIP; the origin is always in the United States.
                to_postal_code:
                  type: string
                  description: 5-digit US ZIP when to_country_code is US or omitted; otherwise the destination country's own postal code.
                to_country_code:
                  type: string
                  enum:
                  - US
                  - CA
                  - GB
                  - DE
                  - AU
                  default: US
                  description: 'Destination country. Sold online: US, CA, GB, DE, AU; any other answers mode international_unsupported_online with no rates.'
                length_cm:
                  type: number
                  description: Packed box length. Supply all four of length_cm, width_cm, height_cm, weight_kg to skip the estimate.
                width_cm:
                  type: number
                height_cm:
                  type: number
                weight_kg:
                  type: number
                  description: Packed weight, kg. Online pricing stops at 68 kg (150 lb), 274 cm (108 in) on the longest side and 419 cm (165 in) of length plus girth; beyond that the response is mode freight_manager.
                package_source:
                  type: string
                  description: Set to "manual" when supplying exact dimensions.
      responses:
        '200':
          description: Priced (mode parcel_label_ready, up to 5 rates), routed to a human (mode freight_manager, empty rates — palletized, crated or oversized shipments are priced by a person), or restricted (empty rates with an explanation).
          content:
            application/json:
              schema:
                type: object
                properties:
                  mode:
                    type: string
                  identified_product_title:
                    type: string
                  package:
                    type: object
                    description: 'The packed box used for pricing: dimensions, weight, confidence, assumptions.'
                  rates:
                    type: array
                    items:
                      type: object
                      description: 'One purchasable service. Two prices are returned and they are not interchangeable: amount is the checkout total a customer pays, with the SMKlog fee inside it (the fee is itemized only on the checkout receipt), and retail_amount is the carrier’s own counter price for the same parcel where the carrier publishes one (0 where it does not).'
                      properties:
                        carrier:
                          type: string
                          description: USPS, UPS, FedEx or DHL
                        service:
                          type: string
                        service_code:
                          type: string
                        amount:
                          type: number
                          description: Checkout total, USD, SMKlog fee inside
                        retail_amount:
                          type: number
                          description: Carrier retail counter price, USD; 0 when not published
                        delivery_days:
                          type:
                          - integer
                          - 'null'
                        delivery_window:
                          type:
                          - string
                          - 'null'
                          description: e.g. "2-5 business days"; null when the carrier quoted none
                        delivery_estimated_date:
                          type:
                          - string
                          - 'null'
                        currency:
                          type: string
                  dangerous_goods:
                    type:
                    - object
                    - 'null'
                  source:
                    type: object
                    description: Where the package estimate and the rates came from.
        '400':
          description: invalid_json, invalid_request, missing_required_fields (with a missing array), or postal validation failure.
        '422':
          description: product_url_not_detected — the page did not identify an item.
        '429':
          description: rate_limited. Slow down; the same buckets cover /quote and /mcp.
      tags:
      - Quote
x-mcp:
  transport: streamable-http
  endpoint: https://quote-api.smklog.com/mcp
  serverCard: https://quote-api.smklog.com/.well-known/mcp/server-card.json