USgeocoder

USgeocoder provides robust US sales tax rates and political district data for every address and geocode, including congressional, state legislative, county, municipality, school districts, elected officials, and census geographies. Their API enables developers to integrate accurate location-based tax and district information into applications, supporting compliance, analytics, and service personalization across the United States.

USgeocoder is listed with 1 API on the APIs.io network. Tagged areas include Company, API, Location, Tax, and District.

USgeocoder’s developer surface includes documentation, API reference, getting-started guide, engineering blog, support, and 9 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

23.1/100 emerging Agent 3/100 human only Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 API

CompanyAPILocation TaxDistrict

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 23.1/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 7.7 / 17

Access Clarity 5.8 / 17

Operational Transparency 1.7 / 11

Contract Governance 0.0 / 10

Discoverability 4.6 / 9

Regulatory Posture 2.1 / 15

Agent readiness — 3/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 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 Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes

12 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 0.0 — up to +25.0 composite points
Access Clarity scores 34.2 — up to +13.2 composite points
Contract Governance scores 0.0 — up to +12.0 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/usgeocoder/apis.yml: open an issue on github.com/api-evangelist/usgeocoder to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 1

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

USgeocoder API

USgeocoder provides address geocoding, standardization, political jurisdictions, census data, and real-time sales tax lookup via a RESTful JSON/XML API.

Pricing Plans 1

Published pricing tiers and plan structures.

Usgeocoder Plans Pricing

0 plans

PLANS

Security Posture 1

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

Usgeocoder Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

Login

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

StatusPage

StatusPage

Support

Support

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: usgeocoder
name: USgeocoder
description: USgeocoder provides robust US sales tax rates and political district data for every address and geocode, including
  congressional, state legislative, county, municipality, school districts, elected officials, and census geographies. Their
  API enables developers to integrate accurate location-based tax and district information into applications, supporting compliance,
  analytics, and service personalization across the United States.
url: https://raw.githubusercontent.com/api-evangelist/usgeocoder/refs/heads/main/apis.yml
x-type: company
x-source: harvest:new-submission
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-27 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-27'
modified: '2026-10-27'
tags:
- Company
- API
- Location
- Tax
- District
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Hosts
  url: hosts/usgeocoder-hosts.yml
- type: Vendors
  url: vendors/usgeocoder-vendors.yml
- type: StatusPage
  url: https://status.usgeocoder.com/
- type: Login
  url: https://usgeocoder.com/login
- type: DeveloperPortal
  url: https://dev.usgeocoder.com/
- type: DomainSecurity
  url: security/usgeocoder-domain-security.yml
- type: Website
  url: https://usgeocoder.com/
- type: Documentation
  url: https://usgeocoder.com/api_overview
- type: APIReference
  url: https://usgeocoder.com/api_overview
- type: GettingStarted
  url: https://usgeocoder.com/api_trial_signup_step1
- type: Blog
  url: http://blog.usgeocoder.com
- type: Support
  url: https://usgeocoder.com/contact_us
- type: TermsOfService
  url: https://usgeocoder.com/termsof_service
- type: PrivacyPolicy
  url: https://usgeocoder.com/privacy_statement
apis:
- name: USgeocoder API
  description: USgeocoder provides address geocoding, standardization, political jurisdictions, census data, and real-time
    sales tax lookup via a RESTful JSON/XML API.
  humanURL: https://usgeocoder.com/api_overview
  baseURL: null
  aid: usgeocoder:usgeocoder-api
x-submission-probe: 200, 2026-10-26
x-coverage:
  state: unreadable
  reason: no-machine-readable-spec
  detail: The provider's documentation pages are HTML only and do not expose an OpenAPI, AsyncAPI, GraphQL, gRPC, or WSDL
    contract.
  evidence:
  - url: https://usgeocoder.com/api_overview
    status: 200
  checked: '2026-10-27'
x-enrichment:
  date: '2026-10-27'
  status: enriched
  artifacts_added: 8
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

USgeocoder API — frequently asked questions

Does USgeocoder have an API?

Yes. APIs.io lists 1 API from USgeocoder, including USgeocoder API.

Is the USgeocoder API ready for AI agents?

USgeocoder has a Kin Score of 23.1 out of 100 (emerging) and an Agent Readiness score of 3.1 (human-only), scored by API Evangelist on 2026-10-31.

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