Bug: EasyPost rate response services/carriers are renamed or mis-mapped in Karrio

[minchaminder]

Context:
We are comparing raw EasyPost API responses vs. the rates returned through Karrio’s EasyPost integration. Same shipment, same date, same origin/destination.

---

Raw EasyPost API (abridged)

"rates": [
  {
    "carrier": "USPS",
    "service": "Priority",
    "rate": "15.85",
    "delivery_days": 3
  },
  {
    "carrier": "USPS",
    "service": "GroundAdvantage",
    "rate": "9.05",
    "delivery_days": 4
  },
  {
    "carrier": "UPSDAP",
    "service": "Ground",
    "rate": "17.09",
    "delivery_days": 3
  },
  {
    "carrier": "UPSDAP",
    "service": "NextDayAirSaver",
    "rate": "83.51",
    "delivery_days": 1
  },
  {
    "carrier": "FedExDefault",
    "service": "FEDEX_2_DAY",
    "rate": "19.52",
    "delivery_days": 4
  }
]

---

Karrio Wrapper Response (abridged)

"rates": [
  {
    "carrier_name": "easypost",
    "service": "easypost_canadapost_priority",
    "total_charge": 15.85,
    "transit_days": 3,
    "meta": { "service_name": "CANADAPOST PRIORITY", "carrier": "usps" }
  },
  {
    "carrier_name": "easypost",
    "service": "GroundAdvantage",
    "total_charge": 9.05,
    "transit_days": 4
  },
  {
    "carrier_name": "easypost",
    "service": "easypost_canpar_ground",
    "total_charge": 17.09,
    "transit_days": 3,
    "meta": { "carrier": "upsdap" }
  },
  {
    "carrier_name": "easypost",
    "service": "easypost_ups_next_day_air_saver",
    "total_charge": 83.51,
    "transit_days": 1
  },
  {
    "carrier_name": "easypost",
    "service": "easypost_fedex_2_day",
    "total_charge": 19.52,
    "transit_days": 4
  }
]

---

Observed Issues

1. Service names renamed or mis-mapped:

   • USPS Priority → easypost_canadapost_priority (looks like a Canada Post service, but it’s USPS).
   • UPS Ground → easypost_canpar_ground (mis-labeled as Canpar).
   • FedEx services are prefixed easypost_fedex_*.

2. Duplication:

   • Some services appear twice in Karrio output (once as easypost_fedex_*, once as direct fedex_*), not present in raw API.

[danh91]

Thanks for reporting this @minchaminder ,
Let me try to reproduce it. It does indeed appear to be a bad mapping.
I suspect there may be clashing.