arcsecond.io
Science & Math
Multiple astronomy data sources
The Is Even API checks whether a given integer is even or odd. It provides a simple endpoint where you can submit a number and receive a response indicating its parity.
Verified 4 days ago: 100% uptime
API key
Not required
HTTPS
Supported
Browser calls
No, needs a proxy
Status
Live · 95/100
Last checked 2026-09-18. Measured independently, not self-reported by the provider.
A starting template for isEven (humor). Replace ENDPOINT with the path from the official documentation, which we link above rather than guess at.
# No authentication required.
curl -s "https://isevenapi.xyz/ENDPOINT" \
-H "Accept: application/json"This API does not send CORS headers, so a browser will block a direct call from your front end. Call it from your server, or put a small proxy in front of it.
Aggregated from 2 public sources (freepublicapis, public-apis), then normalised and checked by us. If something here is wrong, tell us and we will correct it.
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Answered from what our own scheduled checks found, not from the provider's marketing.
isEven (humor) is listed in our free catalogue and required no credential when we called it. It needs no authentication at all, so you can send a request without signing up. Free tiers can still carry rate limits or non-commercial terms, so check the provider's own terms before shipping.
No. We called isEven (humor) on 2026-09-18 with no key, no token and no Authorization header, and it responded. That is what puts it in our no-key collection.
Not directly. isEven (humor) did not return CORS headers when we checked, so the browser will block your page from reading the response even though the request itself succeeds. Call it from a server, or put a small proxy in front of it.
Yes, as of 2026-09-18. Our automated check reached isEven (humor) and recorded a 100% reliability score with a median response time of 936 ms. We re-check on a schedule, and this page updates with the result.
Yes. isEven (humor) serves over HTTPS, so you can call it from a secure page without triggering a mixed-content block.