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API · /cagr-api

CAGR & Returns API

healthy 4,872 Subscribers

Investment growth and return maths as an API, computed locally and deterministically. The cagr endpoint computes the compound annual growth rate, CAGR = (end/begin)^(1/years) − 1 — the single smoothed annual rate that compounds a starting value into an ending value — together with the total return and the growth multiple, so €1,000 growing to €2,000 over five years works out to about 14.87 %/yr. The future-value endpoint compounds a single lump sum, FV = PV·(1+r)^n, and the present-value endpoint discounts a future lump sum back to today, PV = FV/(1+r)^n. The annualize endpoint converts a total holding-period return over a span of years into an equivalent annual rate, and back the other way. The doubling-time endpoint gives the exact time for money to double, ln2/ln(1+r), alongside the Rule-of-72, Rule-of-70 and Rule-of-69.3 quick estimates — at 8 % money doubles in about nine years. Rates are decimals (0.07 = 7 %) except the doubling endpoint which takes a percentage. Everything is computed locally and deterministically, so it is instant and private. Ideal for fintech, investing, portfolio, robo-advisor, personal-finance and finance-education app developers, return-and-growth calculators, and dashboards. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 5 endpoints. These are single-sum growth and return metrics; for level-payment loans use a loan API and for regular-deposit savings a savings API.

#cagr #investment-return #future-value #doubling-time #finance #developer-tools
api.oanor.com/cagr-api
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Machine-readable spec so AI agents can integrate this API.

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

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

CAGR & Returns API — live data on the oanor API marketplace

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
72 ms
Server probes · 24h
Subscribers
4,872
active
Total calls
120
last 7 days
status Full status page → · 24 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 6,000 calls / month
  • 2 requests / second
  • Hard cap (429 above quota, no overage)
  • 6,000 calls/month
  • 2 req/sec
  • CAGR + FV + PV + annualize + doubling
  • No credit card
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Starter

€5.80 /month

  • 60,000 calls / month
  • 6 requests / second
  • Hard cap (429 above quota, no overage)
  • 60,000 calls/month
  • 6 req/sec
  • Rule of 72, total/annualized return
  • Email support
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Pro

€16.50 /month

  • 270,000 calls / month
  • 15 requests / second
  • Hard cap (429 above quota, no overage)
  • 270,000 calls/month
  • 15 req/sec
  • Robo-advisor & dashboard pipelines
  • Priority support
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Mega

€49.00 /month

  • 1,500,000 calls / month
  • 40 requests / second
  • Hard cap (429 above quota, no overage)
  • 1,500,000 calls/month
  • 40 req/sec
  • Platform scale
  • Dedicated SLA
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Related APIs

Other APIs with overlapping tags.

Investment Return API — oanor API marketplace

Investment Return API

Investment return analysis as an API, computed locally and deterministically. The cagr endpoint computes the compound annual growth rate, (end/begin)^(1/years) − 1 — the single constant yearly rate that turns a starting value into an ending value — along with the total return and growth multiple, or runs the other way to project an ending value from a CAGR. The doubling endpoint gives how long an investment takes to double at a given rate, both the exact figure ln(2)/ln(1+r) and the quick Rule-of-72, -70 and -69.3 estimates, or inverts it to the rate needed to double within a target time. The real-return endpoint applies the Fisher equation, real = (1+nominal)/(1+inflation) − 1, to strip inflation out of a headline return — or works backwards to the nominal return needed for a target real return — showing how the rough nominal-minus-inflation shortcut drifts at higher rates. Everything is computed locally and deterministically, so it is instant and private. Ideal for fintech, robo-advisor, portfolio and personal-finance app developers, return and retirement calculators, and finance education. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This analyses a lump-sum return; for regular-deposit savings projections use a savings API and for loan amortization a loan API.

api.oanor.com/investment-api

 Moldova Inflation & CPI API — oanor API marketplace

Moldova Inflation & CPI API

Official consumer-price inflation for the Republic of Moldova — sourced live from the National Bureau of Statistics of Moldova via its public PxWeb statbank (tables PRE012600, PRE012200 and PRE012800). The cpi endpoint returns the latest reported month with headline year-on-year inflation and the month-on-month price change. The series endpoint returns the monthly history of year-on-year and month-on-month inflation, parameterised by the number of months. The groups endpoint breaks the latest month down across the major divisions — food goods, non-food goods and services — each with its year-on-year rate, showing where price pressure sits. The core endpoint returns Moldova's core-inflation measures, computed by excluding volatile components such as food, energy and regulated prices, each with year-on-year and month-on-month change — the gauges central banks watch for underlying trend. All figures are published directly by the statistics bureau, not modelled, and refreshed from source behind a short server-side cache with keep-warm. Ideal for macro and emerging-market dashboards, CIS and EU-candidate economics trackers, cost-of-living and monetary-policy tools, and fintech needing a clean structured inflation feed for a market the big aggregators rarely cover at monthly resolution. Live keyless upstream. 5 endpoints.

api.oanor.com/moldova-cpi-api

 Moldova Foreign Trade API — oanor API marketplace

Moldova Foreign Trade API

Official foreign-trade statistics for the Republic of Moldova — exports, imports and the trade balance — sourced live from the National Bureau of Statistics of Moldova via its public PxWeb statbank (table EXT015000), all values in millions of US dollars. The trade endpoint returns the latest reported month with exports, imports, the trade balance and the export-to-import cover ratio. The series endpoint returns the monthly history of exports, imports and balance, parameterised by the number of months. The partners endpoint breaks the latest month down by partner-country group — total, CIS countries, the European Union and the rest of the world — each with its exports, imports and balance, showing where Moldova trades. The annual endpoint returns full-year totals for exports, imports and balance across recent years. Figures are published directly by the statistics bureau, not modelled, and refreshed from source with a short server-side cache and keep-warm. Ideal for macro and trade dashboards, emerging-market and CIS/EU economics trackers, supply-chain and current-account analysis, and fintech needing a clean structured trade feed for a market the big aggregators rarely cover at monthly resolution. Live keyless upstream. 5 endpoints.

api.oanor.com/moldova-trade-api

 Åland Consumer Price Index API — oanor API marketplace

Åland Consumer Price Index API

Official consumer-price-index and inflation data for the Åland Islands — the autonomous, Swedish-speaking, euro-area region of Finland — sourced live from Statistics and Research Åland (ÅSUB), the regional statistics authority, via its public PxWeb API (table KO010). The overall endpoint returns the latest headline CPI level (index base 2025 = 100) together with month-on-month and year-on-year change. The series endpoint returns the full monthly history of the headline index with monthly and annual change, parameterised by the number of months. The divisions endpoint breaks the basket down across the thirteen COICOP groups — food, alcohol & tobacco, clothing, housing & utilities, furnishings, health, transport, communication, recreation & culture, education, restaurants & hotels, miscellaneous and personal care — each with its index level and annual change. The drivers endpoint ranks those same divisions by their annual impact in percentage points, showing exactly which categories are pushing Åland inflation up or down. Figures are published directly by ÅSUB, not modelled or estimated, and are refreshed from source. Ideal for macro and regional-economics dashboards, cost-of-living and salary tools, Nordic and euro-area inflation trackers, and fintech that needs a clean, structured CPI feed for a market the big aggregators ignore. Live keyless upstream, short server-side cache. 5 endpoints.

api.oanor.com/aland-stats-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for CAGR & Returns API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call CAGR & Returns API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for CAGR & Returns 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 CAGR & Returns API cost?
CAGR & Returns API has a free tier with 100 calls / month. Paid plans start at €5.80 / 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 CAGR & Returns API GDPR-compliant?
All requests to CAGR & Returns 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/cagr-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/cagr-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/cagr-api/SOME_PATH");
curl_setopt($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/cagr-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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