Query Hawaii Secretary of State Data via REST API

Published June 9, 2026
hisosapibusiness-search

HI Secretary of State API: Developer Guide

The Hawaii Secretary of State maintains comprehensive records of business entities registered in the state. Rather than manually searching the state website, developers can now access this data programmatically through OpenSOSData's REST API.

This guide covers integration patterns, pricing, and practical examples for querying Hawaii business entity information.

What the HI Secretary of State API Returns

Each API lookup returns structured data about a registered business entity in Hawaii:

This data is pulled directly from the Hawaii Secretary of State's official records and cached for 7 days to reduce redundant queries. Use the ?fresh=true parameter to force a real-time scrape when you need the absolute latest information.

Why Use an API Instead of Manual Lookup

The Hawaii Secretary of State website provides a public search tool, but it's designed for human browsing. An API enables:

Pricing: $0.0314 Per Lookup

OpenSOSData charges $0.0314 per successful lookup—Pi pricing that reflects the fundamental nature of this data resource. There are no subscription fees, minimum commitments, or seat licenses.

Start with a $3.14 wallet deposit, which gives you 100 lookups. Scale up or down based on actual usage.

How This Compares to Competitors

Other business data providers charge significantly more:

OpenSOSData's $0.0314 pricing makes bulk verification and routine lookups economically feasible, even for high-volume use cases.

API Coverage: Hawaii Included

OpenSOSData currently covers 50 US jurisdictions including Hawaii, plus Puerto Rico, US Virgin Islands, American Samoa, and Washington D.C. New states are being added regularly.

Supported states include CA, UT, WY, DE, AK, MT, AR, TX, CO, IN, ME, MD, IA, LA, KY, GA, NH, OH, MI, MN, ND, NJ, NE, MO, PA, TN, WA, SC, WI, OR, SD, IL, ID, CT, AL, NC, FL, HI, VA, MA, RI, NY, VT, NV, NM, WV, AZ, OK, MS, and KS.

Quick Start: Your First HI Secretary of State API Call

1. Sign Up

Visit https://opensosdata.com to join the waitlist and receive your API key.

2. Fund Your Wallet

Deposit a minimum of $3.14 to enable lookups.

3. Make Your First Request

Use the POST endpoint at https://api.opensosdata.com/v1/lookup with your API key in the Authorization header.

Example: Lookup a Hawaii Business Entity

curl -X POST https://api.opensosdata.com/v1/lookup \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "state": "HI",
    "entity_name": "Honolulu Tech Solutions Inc",
    "fresh": false
  }'

Example Response

{
  "entity_name": "Honolulu Tech Solutions Inc",
  "entity_type": "Business Corporation",
  "entity_id": "HI-123456789",
  "status": "Active",
  "formation_date": "2015-03-14",
  "registered_agent": {
    "name": "John Doe",
    "address": "1234 King Street, Honolulu, HI 96814"
  },
  "principal_address": "1234 King Street, Honolulu, HI 96814",
  "officers": [
    {
      "name": "Jane Smith",
      "title": "President"
    },
    {
      "name": "Robert Johnson",
      "title": "Secretary"
    }
  ],
  "lookup_cost": 0.0314,
  "cached": true,
  "cached_at": "2024-01-15T09:32:00Z"
}

Key Parameters and Options

state: Required. Use "HI" for Hawaii lookups.

entity_name: Required. The business name to search for. Partial matches are supported.

fresh: Optional. Set to true to bypass the 7-day cache and fetch real-time data directly from the Hawaii Secretary of State. Costs the same $0.0314 per lookup.

entity_id: Alternative to entity_name. Search by the Secretary of State's official entity ID for guaranteed accuracy.

Common Use Cases for Hawaii Businesses

Vendor Verification

Before onboarding vendors or contractors, verify their entity status and current registered agent information through the Hawaii SOS API.

Legal Due Diligence

Check formation dates, officer names, and compliance status during contract negotiations or acquisition reviews.

Bulk Compliance Audits

Process lists of company names to confirm all are properly registered and active in Hawaii.

KYC/AML Programs

Integrate official business entity data into identity verification workflows to meet regulatory requirements.

Caching and Freshness

By default, the API returns cached data refreshed every 7 days. This reduces costs and improves response times. If you need guaranteed real-time information—for example, checking status changes within hours—use the fresh=true parameter. There is no additional charge; you still pay $0.0314 per lookup regardless of cache status.

API Documentation

Full OpenAPI specification and endpoint documentation is available at https://opensosdata.com/openapi.yaml. The schema includes all response fields, error codes, and rate limit information.

Get Started Today

Integration typically takes minutes. Sign up at https://opensosdata.com, fund your account, and begin querying Hawaii Secretary of State data immediately. No long-term contracts, no setup fees, no hidden charges—just $0.0314 per lookup.

Start Looking Up Entities for $0.0314

Pi pricing. No subscription. $3.14 gets you 100 lookups.

Join the Waitlist