Drop-in USPS v3 REST layer

Prove USPS fast, then expand.

Start with address validation, address extract, ZIP+4, and rate quotes. Expand into protected label workflows, managed tracking routes, and BYOK as account setup catches up; pickup stays request-access until its own proof lane closes.

Try it — no signup needed

Free proof endpoints cover address validation, address extract, city/state lookup, domestic and international rates, service standards, shipping options, and locations.

Capabilities

Address Validation DPV confirmation, ZIP+4, business/residential

Rate Quotes Domestic + international, all mail classes

Label Creation Protected workflow access, PDF/ZPL output

Package Tracking Managed route access with normalized USPS updates; broader proof depth is still gated

Pickup Request Access Separate proof lane for prepared, prepaid parcels in limited rollout

Service Standards Transit times by origin/destination/class

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CI-backed coverage · USPS workflow surface · Free proof path live