Acquisition Atlas Public API

The Acquisition Atlas API gives you programmatic access to the largest database of public filing records in the United States. Query filings by county, filter by amount, property type, foreclosure status, and more — all through a simple REST interface.

What you can do

• Search & filter tens of thousands of public filing records across multiple counties
• Access property data including valuations, lot size, bedrooms/bathrooms, mortgage info
• Find high-equity filings — filings with high equity percentages and verified property values
• Get aggregate statistics on filing volume, amounts, and county-level breakdowns
• Integrate into your workflow — CRM, spreadsheets, custom dashboards, or automated pipelines

Base URL

https://api.acqatlas.com/v1

All API requests use HTTPS. HTTP requests are redirected to HTTPS automatically.

Quick example

curl -H "X-API-Key: ak_live_your_key_here" \
  "https://api.acqatlas.com/v1/filings?county=Miami-Dade&limit=5"

{
  "success": true,
  "data": [
    {
      "id": 12345,
      "owner": "John Smith",
      "propertyAddress": "123 Main St, Miami, FL 33101",
      "currentAmount": 15432.50,
      "filingType": "Tax Lien",
      "county": "Miami-Dade, FL",
      "filingDate": "2025-01-15"
    }
  ],
  "pagination": {
    "total": 8423,
    "limit": 5,
    "offset": 0,
    "has_more": true
  },
  "meta": {
    "request_id": "req_abc123",
    "tier": "free",
    "rate_limit_remaining": 95
  }
}

Next steps

1. Get an API key — Create your key in the developer dashboard
2. Quickstart guide — Make your first API call in 5 minutes
3. Explore endpoints — Full reference for all available endpoints
4. Compare tiers — See what each plan unlocks