Integrations - Usps - Unified.to

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Integration: USPS
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Overview

Company website:

https://www.usps.com

Integration launch date:

January 23, 2026

API Categories:

Shipping Passthrough

API Authorization:

Consumer Key / Consumer Secret / Payment Authorization Token

Data-regions:

Production Testing

SHIPPING SHIPMENT

End-API object:

shipment

Unified API Methods:

List options:

Readable fields:

carrier_id created_at from_address id label_id order_id packages rate_amount rate_currency service_code status to_address tracking_id updated_at

Writable fields:

from_address packages to_address carrier_id order_id service_code

required fields

SHIPPING LABEL

End-API object:

label

Unified API Methods:

List options:

Readable fields:

created_at id label_cost label_cost_currency label_format label_url shipment_id status tracking_number updated_at

Writable fields:

shipment_id label_format

required fields

SHIPPING TRACKING

End-API object:

tracking

Unified API Methods:

Webhooks:

Virtual

List options:

limit offset updated_gte

Readable fields:

carrier_status_code carrier_status_description created_at estimated_delivery events id status status_description tracking_number updated_at

Writable fields:

SHIPPING RATE

End-API object:

rate

Unified API Methods:

List Get Create Update Remove

List options:

Readable fields:

Writable fields:

from_address packages to_address carrier_id ship_by_at

required fields

SHIPPING CARRIER

End-API object:

carrier

Unified API Methods:

List options:

Readable fields:

code id is_active name

Writable fields:

PASSTHROUGH

Unified API Methods:

POST GET PUT DELETE

List options:

Readable fields:

Writable fields:

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