One API for unclaimed property. Not fifty subscriptions.

API access is our Enterprise tier. We schedule a short call first to understand your use case and confirm it complies with state regulations, then set you up with a key. Email api@kanpufund.com to start.

Just sourcing deals? The Pro tier ($49.99/mo) gives PIs and small businesses 50 searches/day plus a multi-person research tool — no API needed.

Why this is cheaper than going state by state

There is no single place to buy every state's bulk unclaimed-property data. Most states don't sell bulk data at all — they only offer a manual web search. The handful that do sell it charge separately, and the totals add up fast:

Assembling the paid feeds alone runs past $2,500/yr and still leaves ~40 states you can't buy at all. Kanpu aggregates the free and paid sources, plus states that offer no bulk feed, behind one key.

Who it's for

How it works

Authenticate with a bearer key. Search returns full records with exact amounts where the state publishes them; the changes feed lets you keep your own data in sync as money is claimed or moves.

Search — full records for a name.

POST https://api.kanpufund.com/v1/search
Authorization: Bearer <your-api-key>
Content-Type: application/json

{ "name": "Jane A. Doe", "states": ["CA","WI"], "limit": 50 }

→ { "count": 3, "limit": 50, "offset": 0,
      "results": [
        { "stateCode": "CA", "statePropertyId": "985143741",
          "ownerName": "DOE JANE A", "ownerType": "person",
          "ownerStreet": "380 WINWOOD AVE", "ownerCity": "PACIFICA", "ownerZip": "94044",
          "amount": 4820.55, "amountKnown": true, "holderName": "BANK OF AMERICA",
          "propertyType": "AC01: CHECKING ACCOUNTS", "status": "active" },
        { "stateCode": "SC", "statePropertyId": "10482711:DOE JANE A",
          "ownerName": "DOE JANE A", "ownerType": "person",
          "ownerStreet": "12 MAIN ST", "ownerCity": "COLUMBIA", "ownerZip": "29201",
          "amount": null, "amountKnown": false, "valueBucket": "Over $100",
          "holderName": "SC DEPT OF REVENUE", "propertyType": "Refund", "status": "active" }
      ] }

amountKnown is true when the state publishes a dollar figure and amount is exact. Some states publish names only (currently SC, MT, OK, PA): those records return amount: null, amountKnown: false and, where the state gives one, a valueBucket string (South Carolina: "Over $100", "Under $100" or "Stock"; otherwise null). Never treat a missing amount as $0.

Changes feed — incremental updates to enrich your own tool. A property that leaves a state's list has almost always been claimed.

GET https://api.kanpufund.com/v1/changes?since=2026-08-01&cursor=0
Authorization: Bearer <your-api-key>

→ { "count": 2, "nextCursor": 1841,
      "events": [
        { "id": 1840, "stateCode": "CA", "statePropertyId": "985143741",
          "type": "AMOUNT_CHANGED", "detail": { "old": 4820.55, "new": 5010.20 },
          "detectedAt": "2026-08-21T12:00:00Z" },
        { "id": 1841, "stateCode": "WI", "statePropertyId": "2928027",
          "type": "DISAPPEARED", "detectedAt": "2026-08-21T12:00:00Z" }
      ] }

Coverage — public, no key needed.

GET https://api.kanpufund.com/coverage
→ { "totals": { "statesLive": 2, "records": 87697350 }, "states": [ ... ] }

Event types: APPEARED, AMOUNT_CHANGED, DISAPPEARED, REAPPEARED. Your base URL and key are issued together. The free public lookup at kanpufund.com is rate-limited to a few searches per day — a key removes that limit and unlocks full records and the changes feed.

Get access

Email api@kanpufund.com with your business name and use case. We'll issue a key and an invoice for $500/year.