# Smarty

**Canonical:** https://apis.io/providers/smarty/  
**Website:** https://www.smarty.com/  
**APIs profiled:** 6

Smarty (formerly SmartyStreets) is an address intelligence company that provides REST APIs for US and international address verification, validation, geocoding, and autocomplete at high volume. The platform supports over 210 million US addresses including 20 million non-USPS addresses, delivering up to 55 metadata points and ZIP9-level geocodes per lookup. Smarty offers both cloud-hosted and on-premises deployment options, supporting embedded-key and secret-key authentication patterns. APIs are designed for high-throughput workloads, with US address lookups reaching up to 25,000 per second, making Smarty suitable for enterprise address validation pipelines and real-time checkout address autocomplete.

## Kin Score — 50.4 / 100 (developing)

Scored 2026-08-25 under rubric 0.14.0. Trend: flat (+0.0 from 50.4).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 62.9 |
| Governance | 25.0 |
| Contract Governance | 25.0 |
| Operational Transparency | 65.8 |
| Developer Ergonomics | 28.6 |
| Commercial Clarity | 50.0 |
| Access Clarity | 50.0 |

## Agent readiness — 22.3 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | bearer |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | partial |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## Access

Freemium (free trial) · Self-serve signup — onboarding: self-serve, pricing: freemium, trial: yes (confidence: high).

## APIs (6)

- **Smarty Lookup API** — The Lookup API from Smarty — 3 operation(s) for lookup.
- **Smarty reverse-geo API** — Operation invlovling reverse geocoding
- **Smarty street-address API** — The street-address API from Smarty — 1 operation(s) for street-address.
- **Smarty us-enrichment API** — The us-enrichment API from Smarty — 8 operation(s) for us-enrichment.
- **Smarty US Extract API API** — The US Extract API API from Smarty — 1 operation(s) for us extract api.
- **Smarty Verify API** — The Verify API from Smarty — 1 operation(s) for verify.

## Agentic access (1)

- **Smarty Agentic Access** — 19 operations · 3 acting

## Security (2)

- **Smarty Authentication** — apiKey · 3 schemes
- **Smarty Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **Smarty Plans Pricing**

## Tags

Address Verification, Geocoding, Address Autocomplete, ZIP Code, Address Intelligence, Location Data, International Address, US Address

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/smarty/). Scores are computed from the provider's own public artifacts under a published rubric.