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

50.4/100 developing ▬ flat Agent 22/100 agent aware Full breakdown ↓
scored 2026-08-25 · rubric v0.14.0

AccessFreemiumSelf serveFree trial⚡ Free to try

6 APIs

Address Verification Geocoding Address Autocomplete ZIP CodeAddress IntelligenceLocation DataInternational AddressUS Address

Kin Score

Kin Score How this is scored →
scored 2026-08-25 · rubric v0.14.0

Composite quality — 50.4/100 · developing

Contract Quality 15.7 / 25

Developer Ergonomics 5.7 / 20

Access Clarity 10.0 / 20

Operational Transparency 8.6 / 13

Contract Governance 3.0 / 12

Discoverability 7.4 / 10

Agent readiness — 22/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Surface 0 / 5

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.

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.

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.

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

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Source (apis.yml)

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: '0.23'
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

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