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API · /cron-api

Cron API

healthy 4,989 Subscribers

A fast, fully-local cron-expression toolkit (UTC): validate 5-field cron expressions with ranges, lists, steps, month and weekday names and the common @aliases (@yearly, @monthly, @weekly, @daily, @hourly); compute the next N run times for a schedule from now or any start date; and describe a schedule in plain English. Every endpoint accepts input via the query string or the request body. Pure server-side compute, no third-party upstream, so responses are instant and always available. Ideal for schedulers and job runners, devops and CI tooling, and dashboards that show the next run time of a task.

#cron #schedule #crontab #parser #devops #dev-tools
api.oanor.com/cron-api
Get an API key Try in playground → Contact provider

Machine-readable spec so AI agents can integrate this API.

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

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

Cron API — live data on the oanor API marketplace

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
83 ms
Server probes · 24h
Subscribers
4,989
active
Total calls
57
last 7 days
status Full status page → · 9 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 16,000 calls / month
  • 2 requests / second
  • Hard cap (429 above quota, no overage)
  • 16,000 calls/month, 2 req/s
  • Validate, next-run and describe endpoints
  • No credit card
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Basic

€3.00 /month

  • 290,000 calls / month
  • 12 requests / second
  • Hard cap (429 above quota, no overage)
  • 290,000 calls/month, 12 req/s
  • All endpoints, batch next-run (up to 50 runs)
  • Commercial use allowed
  • Email support
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Pro

€11.00 /month

  • 1,650,000 calls / month
  • 40 requests / second
  • Hard cap (429 above quota, no overage)
  • 1,650,000 calls/month, 40 req/s
  • Higher throughput for scheduler & dashboard backends
  • Priority email support
  • Commercial use allowed
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Mega

€30.00 /month

  • 8,800,000 calls / month
  • 120 requests / second
  • Hard cap (429 above quota, no overage)
  • 8,800,000 calls/month, 120 req/s
  • Bulk schedule validation & next-run at scale
  • Priority support
  • Commercial use allowed
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api.oanor.com/tvmaze-api

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Parse and build URL query strings — with full support for nested objects and arrays. Turn a query string like a[b][c]=1&tags[]=x&tags[]=y into a clean nested JSON object, and turn any JSON object back into a properly-encoded query string. Choose how arrays are serialised (indices, brackets, repeated keys or comma-separated) and whether to URL-encode. Far beyond a flat key=value encoder — it handles the deep structures real web frameworks (Rails, PHP, Express/qs) use. Pure local processing — no key, no third-party service, instant. Live. 3 endpoints. Built for API request construction, parsing complex links and redirects, form-encoded bodies and webhook payloads.

api.oanor.com/querystring-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Cron API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Cron API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Cron 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 Cron API cost?
Cron API has a free tier with 100 calls / month. Paid plans start at €3.00 / 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 Cron API GDPR-compliant?
All requests to Cron 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/cron-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/cron-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/cron-api/SOME_PATH");
curl_setopt($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/cron-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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