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API · /realestate-api

Real Estate Investment API

healthy 4,266 Subscribers

Real-estate investment maths as an API, computed locally and deterministically — the property-analysis layer a loan calculator leaves out. The cap-rate endpoint gives the net operating income and capitalization rate of a rental from its price, gross rent, vacancy allowance and operating expenses (NOI = gross rent × (1 − vacancy) − expenses; cap rate = NOI / price), plus the gross rent multiplier — the unlevered view a buyer compares deals on. The cash-flow endpoint adds financing: from a down payment (amount or percent), interest rate and term it amortizes the mortgage, then returns the monthly payment, annual debt service, the property cash flow, the cash-on-cash return (annual cash flow ÷ cash invested), the debt-service-coverage ratio (DSCR = NOI ÷ debt service, the figure lenders underwrite to) and the loan-to-value. The metrics endpoint runs the quick screening ratios investors filter on — the 1 % rule (monthly rent ≥ 1 % of price), gross rental yield, gross rent multiplier and price per square foot. Money in, ratios out, in one consistent currency. Everything is computed locally and deterministically, so it is instant and private. Ideal for proptech, real-estate-investment, rental-analysis and landlord app developers, deal-screening and underwriting tools, and personal-finance dashboards. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 compute endpoints. This is property-investment analysis; for pure loan amortization use a loan API and for DCF/NPV use an investment-appraisal API.

#real-estate #rental #cap-rate #cash-flow #dscr #developer-tools
api.oanor.com/realestate-api
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Machine-readable spec so AI agents can integrate this API.

/api/realestate-api/openapi.json
/api/realestate-api/llms.txt

Discovery: GET /api/index.json lists every API.

Real Estate Investment API — live data on the oanor API marketplace

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
88 ms
Server probes · 24h
Subscribers
4,266
active
Total calls
76
last 7 days
status Full status page → · 8 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 3,950 calls / month
  • 2 requests / second
  • Hard cap (429 above quota, no overage)
  • 3,950 calls/month
  • 2 req/sec
  • Cap rate + cash-flow + screening ratios
  • No credit card
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Starter

€6.90 /month

  • 41,500 calls / month
  • 6 requests / second
  • Hard cap (429 above quota, no overage)
  • 41,500 calls/month
  • 6 req/sec
  • Cash-on-cash, DSCR, LTV with financing
  • Email support
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Pro

€18.20 /month

  • 205,000 calls / month
  • 15 requests / second
  • Hard cap (429 above quota, no overage)
  • 205,000 calls/month
  • 15 req/sec
  • Deal-screening & underwriting pipelines
  • Priority support
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Mega

€54.00 /month

  • 1,150,000 calls / month
  • 40 requests / second
  • Hard cap (429 above quota, no overage)
  • 1,150,000 calls/month
  • 40 req/sec
  • Platform scale
  • Dedicated SLA
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The open music-metadata database as an API — artists, release-groups (albums), releases, recordings and labels, identified by stable MusicBrainz IDs (MBIDs), returned as clean JSON. Search any entity by name or Lucene query; look up an artist with their external links and tags, an album, a release with its full track list, a recording with its ISRCs, or a label; and browse an artist's complete discography. Live data with MBIDs, disambiguations, types, countries, life spans, ISRCs, barcodes, catalogue numbers and relations — the canonical identifiers that link and de-duplicate music data across services. Ideal for metadata enrichment and matching, music catalogues, tagging and library tools, and research. 11 data endpoints. Authenticated with an x-oanor-key; fair-use rate limits per plan.

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Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Real Estate Investment API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Real Estate Investment API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Real Estate Investment API?
Free tier allows 1 request per second. Paid plans scale up to 50 requests per second on the Mega tier. Hard limits return HTTP 429 above the quota — no surprise overage charges.
How much does Real Estate Investment API cost?
Real Estate Investment API has a free tier with 100 calls / month. Paid plans start at €6.90 / month with higher quotas and faster rate limits.
Can I cancel my subscription anytime?
Yes. Plans are billed monthly and you can cancel anytime from your billing dashboard. No long-term contracts and no cancellation fee.
Is Real Estate Investment API GDPR-compliant?
All requests to Real Estate Investment API go through our EU-based gateway. Your upstream API key never leaves our server and no personal data is shared with the upstream provider beyond the request you send.

Pick an endpoint from the list on the left to see its details and try it.

Code snippets

Sign up to get an API key, then call any path under your slug.

curl https://api.oanor.com/realestate-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/realestate-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/realestate-api/SOME_PATH");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
$response = curl_exec($ch);
import requests
r = requests.get(
    "https://api.oanor.com/realestate-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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