# Get rate shopper by ID

Retrieve a single rate shopper by its identifier. Accepts both
default strategy names (cheapest, fastest, best_value) and
custom rate shopper UUIDs.

Endpoint: GET /v1/rate_shoppers/{rate_shopper_id}
Version: 1.1.202604070904
Security: api_key

## Path parameters:

  - `rate_shopper_id` (string, required)
    The rate shopper identifier. Can be one of:

Default rate shoppers (strategy name):
- cheapest: Lowest cost option
- fastest: Fastest option at the lowest price
- best_value: Lowest cost option arriving within 4 days

Custom rate shoppers:
A UUID (e.g., f47ac10b-58cc-4372-a567-0e02b2c3d479) identifying
a seller-created rate shopper.

## Response 200 fields (application/json):

  - `rate_shopper_id` (string, required)
    Identifier for the rate shopper. For default rate shoppers this is
a strategy name (cheapest, fastest, best_value). For custom
rate shoppers this is a UUID.
    Example: "cheapest"

  - `name` (string, required)
    Display name of the rate shopper.
    Example: "Cheapest"

  - `services` (array, required)
    The carrier services included in this rate shopper.

  - `services.service_code` (string, required)
    The carrier service code.
    Example: "usps_priority_mail"

  - `services.carrier_id` (string, required)
    The carrier account ID (prefixed with se-).
    Example: "se-28529731"

  - `transit_time` (object)
    Transit time constraints for rate selection.

  - `transit_time.max_days` (integer,null)
    Maximum transit days for domestic shipments.
    Example: 5

  - `transit_time.max_days_international` (integer,null)
    Maximum transit days for international shipments.
    Example: 14

  - `transit_time.use_deliver_by_date` (boolean)
    Whether to use the order's deliver-by date for filtering.

  - `service_preference` (object)
    Preferred service and price tolerance settings.

  - `service_preference.service` (object)
    A carrier service entry in a rate shopper.

  - `service_preference.price_tolerance` (object)
    Price tolerance thresholds for the preferred service.

  - `service_preference.price_tolerance.amount` (number, required)
    Maximum absolute price difference allowed.
    Example: 2.5

  - `service_preference.price_tolerance.percentage` (number, required)
    Maximum percentage price difference allowed.
    Example: 10

  - `is_active` (boolean, required)
    Whether the rate shopper is currently active.
    Example: true

  - `created_at` (string, required)
    Timestamp when the rate shopper was created.
    Example: "2025-01-15T10:30:00Z"

  - `updated_at` (string, required)
    Timestamp when the rate shopper was last updated.
    Example: "2025-03-20T14:45:00Z"

## Response 404 fields (application/json):

  - `request_id` (string, required)
    A UUID that uniquely identifies the request id.
This can be given to the support team to help debug non-trivial issues that may occur
    Example: "aa3d8e8e-462b-4476-9618-72db7f7b7009"

  - `errors` (array, required)
    The errors associated with the failed API call

  - `errors.error_source` (string, required)
    The source of the error, as indicated by the name this informs us if the API call failed because of the
carrier, the order source, or the ShipEngine API itself.
    Enum: "carrier", "order_source", "shipengine"

  - `errors.error_type` (string, required)
    The type of error
    Enum: "account_status", "business_rules", "validation", "security", "system", "integrations"

  - `errors.error_code` (string, required)
    The error code specified for the failed API Call
    Enum: "auto_fund_not_supported", "batch_cannot_be_modified", "carrier_conflict", "carrier_disconnected", "carrier_not_connected", "carrier_not_supported", "confirmation_not_supported", "default_warehouse_cannot_be_deleted", "field_conflict", "field_value_required", "forbidden", "identifier_conflict", "identifiers_must_match", "insufficient_funds", "invalid_address", "invalid_billing_plan", "invalid_field_value", "invalid_identifier", "invalid_status", "invalid_string_length", "label_images_not_supported", "meter_failure", "order_source_not_active", "rate_limit_exceeded", "refresh_not_supported", "request_body_required", "return_label_not_supported", "settings_not_supported", "subscription_inactive", "terms_not_accepted", "tracking_not_supported", "trial_expired", "unauthorized", "unknown", "unspecified", "verification_failure", "warehouse_conflict", "webhook_event_type_conflict", "customs_items_required", "incompatible_paired_labels", "invalid_charge_event", "invalid_object", "no_rates_returned", "file_not_found", "shipping_rule_not_found", "service_not_determined", "no_rates_returned", "funding_source_registration_in_progress", "insurance_failure", "funding_source_missing_configuration", "funding_source_error", "freight_connection_inactive", "freight_provider_id_required", "freight_provider_already_connected", "freight_shipment_not_found", "freight_tracking_not_available", "freight_tracking_not_found", "freight_shipment_not_batchable"

  - `errors.message` (string, required)
    An error message associated with the failed API call
    Example: "Body of request cannot be null."

  - `errors.carrier_id` (string)
    A string that uniquely identifies the carrier that generated the error.
    Example: "se-28529731"

  - `errors.carrier_code` (string)
    The name of the shipping carrier that generated the error, such as fedex, dhl_express, stamps_com, etc.
    Example: "dhl_express"

  - `errors.field_name` (string)
    The name of the field that caused the error
    Example: "shipment.ship_to.phone_number"