Locus Rental Registration Check

{
  "caveats": [
    "Example artifact; not live data or a legal-rental/compliance decision."
  ],
  "components": {
    "condemnedOrBoarded": {
      "observation": {
        "matchMethod": "exact_address_after_canonicalization",
        "premisesPrecision": "building",
        "queriedAddress": "1531 BELMONT AVE",
        "recordsExamined": 0,
        "resultLimit": 0,
        "sourceScope": "Not published in the RRIO dataset."
      },
      "records": [],
      "status": "not_published_by_source"
    },
    "enforcement": {
      "observation": {
        "matchMethod": "exact_address_after_canonicalization",
        "premisesPrecision": "building",
        "queriedAddress": "1531 BELMONT AVE",
        "recordsExamined": 0,
        "resultLimit": 0,
        "sourceScope": "Not published in the RRIO dataset."
      },
      "records": [],
      "status": "not_published_by_source"
    },
    "registration": {
      "observation": {
        "matchMethod": "exact_address_after_canonicalization",
        "matchedAddress": "1531 BELMONT AVE",
        "premisesPrecision": "building",
        "queriedAddress": "1531 BELMONT AVE",
        "recordsExamined": 1,
        "resultLimit": 25,
        "sourceScope": "Seattle SDCI rental-property registration rows."
      },
      "records": [
        {
          "citation": {
            "fetchedAt": "2026-09-08T00:00:00.000Z",
            "recordId": "001-example",
            "sourceId": "seattle-rrio-rental-property-registration",
            "sourceName": "Seattle SDCI Rental Property Registration",
            "sourceUrl": "https://data.seattle.gov/d/j2xh-c7vt"
          },
          "expirationDate": "2027-04-21",
          "id": "001-example",
          "licensedUnits": 4,
          "sourceStatus": "Active Registration"
        }
      ],
      "source": {
        "fetchedAt": "2026-09-08T00:00:00.000Z",
        "sourceId": "seattle-rrio-rental-property-registration",
        "sourceName": "Seattle SDCI Rental Property Registration",
        "sourceUrl": "https://data.seattle.gov/d/j2xh-c7vt"
      },
      "status": "records_found"
    }
  },
  "coverage": "covered",
  "generatedAt": "2026-09-08T00:00:00.000Z",
  "kind": "rental_registration_check",
  "registrationState": "source_reports_active",
  "subject": {
    "identifiers": [
      {
        "namespace": "seattle:sdci-registration",
        "observedAt": "2026-09-08T00:00:00.000Z",
        "sourceId": "seattle-rrio-rental-property-registration",
        "sourceUrl": "https://data.seattle.gov/d/j2xh-c7vt",
        "value": "001-example"
      }
    ],
    "inputAddress": "1531 Belmont Ave, Seattle, WA 98122",
    "jurisdictionId": "us-wa-seattle",
    "jurisdictionName": "Seattle, WA",
    "matchedAddress": "1531 BELMONT AVE",
    "normalizedAddress": "1531 BELMONT AVE",
    "premisesPrecision": "building",
    "resolution": "parcel",
    "unitWasRemoved": false
  },
  "summary": {
    "capped": false,
    "condemnedOrBoardedRecords": 0,
    "enforcementRecords": 0,
    "registrationRecords": 1
  },
  "verifyNext": []
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.locus.report/api/locus-rental-registration-check' \
  -H 'content-type: application/json' \
  --data-raw '{"address":"1531 Belmont Ave, Seattle, WA 98122"}'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - -X POST 'https://api.locus.report/api/locus-rental-registration-check' \
  -H 'content-type: application/json' \
  --data-raw '{"address":"1531 Belmont Ave, Seattle, WA 98122"}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.01 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.01" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.01 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.locus.report%2Fapi%2Flocus-rental-registration-check&method=POST
const res = await pay("https://api.locus.report/api/locus-rental-registration-check", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "address": "1531 Belmont Ave, Seattle, WA 98122"
  }),
});
console.log(res.status, await res.text());

# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.01 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.01"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://api.locus.report/api/locus-rental-registration-check",
        json={
            "address": "1531 Belmont Ave, Seattle, WA 98122",
        },
    )
    print(res.status_code, res.text)