USPS

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Detail	Value
Category	Logistics
Base URL	https://apis.usps.com/v3
Authentication	OAuth2 Client Credentials
Endpoints	6
Connector key	usps

Using USPS in a workflow

1. Go to Connections and click New Connection.
2. Pick USPS from the marketplace.
3. Enter your credentials (see Authentication above for what's expected).
4. In a workflow, drop an API Call node and select this connection.
5. Pick the operation you need from the Operation dropdown — see the table below.

Available Endpoints

Endpoint	Summary
GET	Tracking
GET	Address Validation
GET	Rates
GET	Labels
GET	Delivery Standards
GET	Pickup

Each endpoint has its own page with parameter details, an example API Call node configuration, and the response shape.