Carriers

FlexOps integrates with major domestic and international carriers through a unified API. You write one integration; we handle the carrier-specific translations.

Supported carriers

Carrier	Code	Services	Coverage
USPS	usps	Priority, Express, Ground Advantage, First Class	US domestic
FedEx	fedex	Ground, Express, 2Day, Overnight, International	US + International
UPS	ups	Ground, 2nd Day Air, Next Day Air, Worldwide	US + International
DHL	dhl	Express Worldwide, eCommerce	International
OnTrac	ontrac	Ground, Sunrise	US regional (Western states)
LSO	lso	Ground, Economy, Priority, 2Day	US regional (TX, Southwest)
Canada Post	canadapost	Regular, Xpresspost, Priority	Canada
Royal Mail	royalmail	1st/2nd Class, Tracked, Special Delivery	UK
Australia Post	auspost	Regular, Express, International	Australia

Listing available carriers

curl -X GET https://api.flexops.io/v1/carriers \
  -H "X-API-Key: your-api-key"

{
  "carriers": [
    {
      "code": "usps",
      "name": "United States Postal Service",
      "services": ["priority", "express", "ground_advantage", "first_class"],
      "supportsInternational": false,
      "supportsReturns": true,
      "supportsPickup": false
    }
  ]
}

Carrier accounts

Some carriers (FedEx, UPS, DHL) require your own account credentials. Configure these in the Dashboard under Settings > Carrier Accounts.

USPS labels are available immediately through FlexOps's USPS reseller partnership — no separate account needed.

OnTrac and LSO are regional US carriers that offer competitive pricing in their coverage areas. Configure your accounts under Settings > Carrier Accounts.