Address validation and geocoding APIs that clean and verify US and international addresses at scale.
Smarty provides APIs for validating, standardizing, and geocoding postal addresses — US addresses against authoritative postal data, plus international coverage. Developers wire it into signup forms, checkout flows, and CRM hygiene jobs so addresses are corrected at the point of entry rather than discovered broken later. In the revenue stack, clean address data is quiet infrastructure with loud consequences: tax jurisdiction assignment, invoice delivery, fraud checks, and territory mapping all break on bad addresses.
Which of the capability map's modules Smarty covers — each links to the module's own page, with every tool that supports it.
| Module | Phase | Depth | Note |
|---|---|---|---|
| Define What You Sell | |||
| Location / Address Validation | Design & Setup | Core | point-of-entry validation and rooftop geocoding feeding tax and delivery accuracy |
Smarty competes on speed and developer experience — high-throughput APIs with straightforward pricing rather than enterprise data-quality suites. For billing teams the relevant detail is rooftop-level geocoding and jurisdiction precision: sales tax in the US can change across a street, so validating to the exact address rather than the ZIP code is what keeps tax calculation accurate.
Because indirect tax is jurisdictional. US sales tax rates depend on overlapping state, county, city, and special districts that ZIP codes do not reliably resolve. Validating to a precise, standardized address is the input that lets a tax engine pick the right rates — garbage in, wrong tax out.
Both, but entry-point validation pays best. Correcting an address while the customer is still in the form costs nothing; fixing it after an invoice bounced or tax was misfiled costs support time and amendments. Batch cleanup then handles the legacy records and drift.