Smarty website screenshot

Smarty

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.

Smarty publishes 6 APIs on the APIs.io network, including Lookup API, reverse-geo API, street-address API, and 3 more. Tagged areas include Address Verification, Geocoding, Address Autocomplete, ZIP Code, and Address Intelligence.

The Smarty catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Smarty’s developer surface includes authentication, documentation, engineering blog, pricing, changelog, and 16 more developer resources.

🌐 Visit website 📡 Source on GitHub
57.2/100 strong ▬ flat Agent 34/100 agent aware Full breakdown ↓
scored 2026-08-05 · rubric v0.9.1
AccessFreemiumSelf serveFree trial⚡ Free to try
6 APIs
Address VerificationGeocodingAddress AutocompleteZIP CodeAddress IntelligenceLocation DataInternational AddressUS Address

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1
Composite quality — 57.2/100 · strong
Contract Quality 17.5 / 25
Developer Ergonomics 5.2 / 20
Commercial Clarity 10.0 / 20
Operational Transparency 8.9 / 13
Governance 8.3 / 12
Discoverability 7.4 / 10
Agent readiness — 34/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 7 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/smarty: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 6

Individual APIs this provider publishes, each with its own machine-readable definition.

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.

Postman Collections 6

Ready-to-run Postman collections for exercising this provider's APIs.

International Address Autocomplete Lookup API

POSTMAN

International Address Autocomplete Lookup reverse-geo API

POSTMAN

International Address Autocomplete Lookup street-address API

POSTMAN

International Address Autocomplete Lookup us-enrichment API

POSTMAN

International Address Autocomplete Lookup US Extract API API

POSTMAN

International Address Autocomplete Lookup Verify API

POSTMAN

Pricing Plans 1

Published pricing tiers and plan structures.

Smarty Plans Pricing

5 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Smarty Rate Limits

3 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Smarty Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Smarty Context

6 classes · 46 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Smarty API Rules

5 rules · 4 warnings 1 info

SPECTRAL

JSON Schema 2

Standalone JSON Schema definitions for this provider's data models.

Smarty US Address Request

12 properties

JSON SCHEMA

Smarty US Address Response

11 properties

JSON SCHEMA

Examples 2

Example request and response payloads for these APIs.

Smarty Us Autocomplete Response

1 fields

EXAMPLE

Smarty Us Reverse Geocode Response

1 fields

EXAMPLE

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Smarty Authentication

apiKey · 3 schemes

SECURITY

Smarty Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Smarty Agentic Access

19 operations · 3 acting

19 operations · 3 acting

AGENTIC

Resources

Documentation 3

Reference material describing how the API behaves

Documentation
Documentation
 JSONSchema
JSONSchema
 JSONSchema
JSONSchema

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Vocabulary
Vocabulary
 JSONLDContext
JSONLDContext

Build 3

SDKs, sample code, and the tooling you integrate with

PostmanWorkspace
PostmanWorkspace
 GitHubOrganization
GitHubOrganization
 GitHubOrganization
GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 3

Status, limits, changes, and where to get help

StatusPage
StatusPage
 ChangeLog
ChangeLog
 RateLimits
RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing
Pricing
 Plans
Plans
 FinOps
FinOps

Company 3

The organization behind the API

Website
Website
 LinkedIn
LinkedIn
 Blog
Blog

Other 1

Properties that don't map to a standard resource type

X
X

Source (apis.yml)

apis.yml Raw ↑ 
aid: smarty
name: Smarty
description: 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.
type: Index
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: true
  try_now: true
  public: false
  label: Freemium (free trial) · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/smarty.png
tags:
- Address Verification
- Geocoding
- Address Autocomplete
- ZIP Code
- Address Intelligence
- Location Data
- International Address
- US Address
url: https://raw.githubusercontent.com/api-evangelist/smarty/refs/heads/main/apis.yml
created: '2026-06-12'
modified: '2026-06-12'
specificationVersion: '0.19'
apis:
- aid: smarty:smarty-lookup-api
  name: Smarty Lookup API
  description: The Lookup API from Smarty — 3 operation(s) for lookup.
  humanURL: https://www.smarty.com/products/apis/us-street-api
  baseURL: https://us-street.api.smarty.com/street-address
  tags:
  - Lookup
  properties:
  - type: OpenAPI
    url: openapi/smarty-lookup-api-openapi.yml
  - type: Documentation
    url: https://www.smarty.com/docs/apis/us-street-api/reference
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/us-autocomplete-pro-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/us-zipcode-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/us-reverse-geo-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/us-enrichment-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/us-extract-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/international-street-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/international-autocomplete-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/international-postal-code-api
- aid: smarty:smarty-reverse-geo-api
  name: Smarty reverse-geo API
  description: Operation invlovling reverse geocoding
  humanURL: https://www.smarty.com/products/apis/us-street-api
  baseURL: https://us-street.api.smarty.com/street-address
  tags:
  - reverse-geo
  properties:
  - type: OpenAPI
    url: openapi/smarty-reverse-geo-api-openapi.yml
  - type: Documentation
    url: https://www.smarty.com/docs/apis/us-street-api/reference
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/us-autocomplete-pro-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/us-zipcode-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/us-reverse-geo-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/us-enrichment-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/us-extract-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/international-street-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/international-autocomplete-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/international-postal-code-api
- aid: smarty:smarty-street-address-api
  name: Smarty street-address API
  description: The street-address API from Smarty — 1 operation(s) for street-address.
  humanURL: https://www.smarty.com/products/apis/us-street-api
  baseURL: https://us-street.api.smarty.com/street-address
  tags:
  - street-address
  properties:
  - type: OpenAPI
    url: openapi/smarty-street-address-api-openapi.yml
  - type: Documentation
    url: https://www.smarty.com/docs/apis/us-street-api/reference
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/us-autocomplete-pro-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/us-zipcode-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/us-reverse-geo-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/us-enrichment-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/us-extract-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/international-street-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/international-autocomplete-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/international-postal-code-api
- aid: smarty:smarty-us-enrichment-api
  name: Smarty us-enrichment API
  description: The us-enrichment API from Smarty — 8 operation(s) for us-enrichment.
  humanURL: https://www.smarty.com/products/apis/us-street-api
  baseURL: https://us-street.api.smarty.com/street-address
  tags:
  - us-enrichment
  properties:
  - type: OpenAPI
    url: openapi/smarty-us-enrichment-api-openapi.yml
  - type: Documentation
    url: https://www.smarty.com/docs/apis/us-street-api/reference
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/us-autocomplete-pro-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/us-zipcode-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/us-reverse-geo-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/us-enrichment-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/us-extract-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/international-street-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/international-autocomplete-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/international-postal-code-api
- aid: smarty:smarty-us-extract-api-api
  name: Smarty US Extract API API
  description: The US Extract API API from Smarty — 1 operation(s) for us extract api.
  humanURL: https://www.smarty.com/products/apis/us-street-api
  baseURL: https://us-street.api.smarty.com/street-address
  tags:
  - US Extract API
  properties:
  - type: OpenAPI
    url: openapi/smarty-us-extract-api-api-openapi.yml
  - type: Documentation
    url: https://www.smarty.com/docs/apis/us-street-api/reference
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/us-autocomplete-pro-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/us-zipcode-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/us-reverse-geo-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/us-enrichment-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/us-extract-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/international-street-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/international-autocomplete-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/international-postal-code-api
- aid: smarty:smarty-verify-api
  name: Smarty Verify API
  description: The Verify API from Smarty — 1 operation(s) for verify.
  humanURL: https://www.smarty.com/products/apis/us-street-api
  baseURL: https://us-street.api.smarty.com/street-address
  tags:
  - Verify
  properties:
  - type: OpenAPI
    url: openapi/smarty-verify-api-openapi.yml
  - type: Documentation
    url: https://www.smarty.com/docs/apis/us-street-api/reference
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/us-autocomplete-pro-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/us-zipcode-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/us-reverse-geo-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/us-enrichment-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/us-extract-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/international-street-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/international-autocomplete-api
  - type: Documentation
    url: https://www.smarty.com/docs/cloud/international-postal-code-api
common:
- type: PostmanWorkspace
  url: https://www.postman.com/kinlaneapi/smarty/overview
- type: AgenticAccess
  url: agentic-access/smarty-agentic-access.yml
- type: DomainSecurity
  url: security/smarty-domain-security.yml
- type: Authentication
  url: authentication/smarty-authentication.yml
- type: Website
  url: https://www.smarty.com/
- type: Documentation
  url: https://www.smarty.com/docs
- type: GitHubOrganization
  url: https://github.com/smartystreets
- type: GitHubOrganization
  url: https://github.com/smarty
- type: LinkedIn
  url: https://www.linkedin.com/company/smarty-digital-llc
- type: Blog
  url: https://www.smarty.com/blog
- type: Pricing
  url: https://www.smarty.com/pricing
- type: StatusPage
  url: https://status.smarty.com/
- type: ChangeLog
  url: https://www.smarty.com/docs/changelog
- type: X
  url: https://x.com/smartycompany
- type: Plans
  url: plans/smarty-plans-pricing.yml
- type: RateLimits
  url: rate-limits/smarty-rate-limits.yml
- type: FinOps
  url: finops/smarty-finops.yml
- type: Vocabulary
  url: vocabulary/smarty-vocabulary.yml
- type: JSONLDContext
  url: json-ld/smarty-context.jsonld
- type: JSONSchema
  url: json-schema/smarty-us-address-request.json
- type: JSONSchema
  url: json-schema/smarty-us-address-response.json
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com