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API · /marketcalendar-api

Market Calendar API

healthy 3,215 Subscribers

Live corporate-events calendar for US-listed stocks — the dates that move markets — served straight from Nasdaq's public calendar feed. For any trading day it answers the three questions a trader's calendar needs. The earnings endpoint lists every company reporting on a date with the session (pre-market or after-hours), the consensus EPS forecast, the number of analyst estimates, market cap and the year-ago actual EPS — so you can see, for example, Oracle reporting after the close with a $1.58 consensus against $1.35 a year earlier. The dividends endpoint gives the dividend calendar: the ex-dividend, record and payment dates, the per-share rate and the indicated annual dividend. The splits endpoint gives the stock-split calendar with the split ratio and execution date. This is the forward event-calendar layer every trading, portfolio, screener, earnings-tracker and finance app needs — read live from Nasdaq, nothing cached or stored. Pass any date as YYYY-MM-DD, or omit it for today. Distinct from price, quote and fundamentals APIs — this is the forward calendar of corporate events: who reports, who pays, who splits, and when. 4 endpoints.

#earnings #dividends #splits #calendar #stocks #trading #finance
api.oanor.com/marketcalendar-api
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Machine-readable spec so AI agents can integrate this API.

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

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

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
177 ms
Server probes · 24h
Subscribers
3,215
active
Total calls
20
last 7 days
status Full status page → · 8 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 9,000 calls / month
  • 3 requests / second
  • Hard cap (429 above quota, no overage)
  • 9,000 calls/month
  • 3 req/sec
  • Earnings, dividends & splits calendars
  • No credit card
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Starter

€11.00 /month

  • 110,000 calls / month
  • 8 requests / second
  • Hard cap (429 above quota, no overage)
  • 110,000 calls/month
  • 8 req/sec
  • EPS forecasts, estimates, ex-dividend dates
  • Email support
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Pro

€29.00 /month

  • 560,000 calls / month
  • 15 requests / second
  • Hard cap (429 above quota, no overage)
  • 560,000 calls/month
  • 15 req/sec
  • Trading, screener & earnings-tracker pipelines
  • Priority support
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Scale

€68.00 /month

  • 2,800,000 calls / month
  • 30 requests / second
  • Hard cap (429 above quota, no overage)
  • 2,800,000 calls/month
  • 30 req/sec
  • Platform & portfolio scale
  • Dedicated SLA
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Other APIs with overlapping tags.

College Majors API

Earnings and employment outcomes for 170+ US college majors, from FiveThirtyEight's analysis of the U.S. Census American Community Survey. For each major: its category (Engineering, Business, Arts…), number of graduates and share who are women, median / 25th- / 75th-percentile earnings of full-time workers, unemployment rate and college-job counts. Look a major up by name or code, list a category, rank majors by earnings or unemployment, or search. Ideal for edtech, career-guidance, student-advising and HR analytics apps.

api.oanor.com/collegemajors-api

Stock Dividends API

Live stock dividend data as an API — the dividends any listed stock or ETF actually pays, served from Yahoo Finance. For any ticker it returns the trailing-twelve-month dividend per share, the current dividend yield, the payment frequency (monthly, quarterly, semi-annual or annual), the most recent payment with its date, and the dividend payment history. Look a stock up by ticker or company name, or pull its full payment history over several years. Non-paying stocks are reported cleanly with a zero yield so you can screen for income. The dividend-income layer for investing, screening and dashboard apps. Live, no key, no cache. Distinct from dividend-ratio calculators and from price-quote APIs — this returns the stock's actual dividends paid and its real yield.

api.oanor.com/dividends-api

IPO Calendar API

The live pipeline of US stock-market initial public offerings, served from Nasdaq's public IPO calendar — no key, nothing cached. This is the deal flow of companies going public, the data IPO investors and traders watch. The priced endpoint returns the IPOs that have just priced and begun trading, each with the ticker, company, exchange, offer price, shares offered, pricing date and total deal size. The upcoming endpoint returns the IPOs expected to price soon, with their price range and expected date — the near-term pipeline. The filed endpoint returns companies that have newly filed to go public, the earliest signal of a coming listing. The calendar endpoint returns the whole month in one call — priced, upcoming and filed — with counts. Any month back through the archive can be requested, and with no month it returns the current one. Everything is live from Nasdaq, nothing stored. This is the IPO-pipeline layer for any trading, investing, screener or finance app. Distinct from stock-quote and earnings APIs — this is the calendar of companies coming to market: priced, upcoming and freshly filed offerings. 4 endpoints, no key on our side.

api.oanor.com/ipo-api

Easter & Computus API

Computus and calendar maths as an API, computed locally and deterministically. The easter endpoint computes the date of Easter Sunday for any year — both the Western date, by the Anonymous Gregorian (Meeus/Jones/Butcher) algorithm, and the Orthodox date, by the Julian computus converted to the Gregorian calendar — with the month name and weekday; Easter is the first Sunday after the paschal full moon, so 2024 falls on 31 March in the West and 5 May for the Orthodox church, while in 2025 both coincide on 20 April. The movable-feasts endpoint returns the whole Easter-anchored cycle for a year as calendar dates — Ash Wednesday (−46 days), Palm Sunday (−7), Maundy Thursday (−3), Good Friday (−2), Ascension (+39), Pentecost (+49) and Corpus Christi (+60). The julian-day endpoint converts a Gregorian date to its Julian Day Number — the continuous day count astronomers use, where 2451545 is 1 January 2000 — and back, returning the weekday too. Years are in the Gregorian calendar. Everything is computed locally and deterministically, so it is instant and private. Ideal for calendar, scheduling, liturgical, church, holiday-planning and date-arithmetic app developers, movable-feast and Julian-day tools, and almanac software. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This is the computus and Julian-day conversion; for general date arithmetic and time zones use a date-time API.

api.oanor.com/easter-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Market Calendar API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Market Calendar API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Market Calendar 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 Market Calendar API cost?
Market Calendar API has a free tier with 100 calls / month. Paid plans start at €11.00 / 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 Market Calendar API GDPR-compliant?
All requests to Market Calendar 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/marketcalendar-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/marketcalendar-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/marketcalendar-api/SOME_PATH");
curl_setopt($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/marketcalendar-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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