Quick start
Get your first API call working in under 2 minutes. You don't need to know anything about APIs to get started — just follow the steps below.
1
Get your API key
Sign up for a free account — no credit card needed. Your API key will be on your dashboard.
Sign up free2
Make your first lookup
Replace YOUR_API_KEY with the key from your dashboard and run this in your terminal:
# Look up a company by name in Wyoming
curl -X POST https://sosscraper.com/api/lookup \
-H "Content-Type: application/json" \
-H "x-api-key: YOUR_API_KEY" \
-d '{"companyName": "Tesla Motors", "state": "WY"}'
3
Read the response
You'll get back a JSON response like this:
{
"success": true,
"entityName": "TESLA MOTORS NEW YORK LLC",
"filingId": "2024-001445631",
"entityType": "LLC",
"status": "Active",
"formationDate": "04/22/2024"
}
Tip
Not a developer? Use the Name Check or Bulk Lookup pages — no coding required.
What you can do
POST
Look up a single entity by company name or filing ID/api/lookup1 creditPOST
Get all matching entities for a search query/api/search-all1 credit / 25 resultsPOST
Full name availability check before forming a company/api/check-name3 creditsGET
Official state filing fees for one state, a list, or all 51/api/fees1–10 creditsPOST
Annual reports, franchise taxes and post-formation filings, with a company's exact due dates/api/deadlines1–10 creditsGET
How long each state takes to approve a filing, live processing dates, and expedite fees and cut-offs/api/processing1–10 creditsGET
Which state taxes a business must register for, with the agency, sign-up page, fee and remote-seller threshold/api/tax-registration1–10 creditsPOST
Calculators: franchise tax, annual report costs, sales tax thresholds, formation and late-filing costs, federal tax by entity type, IRS penalties/api/calc/{name}1–10 credits