Free APIs › Developer Tools › OneSignal
Free key🆕 NewD · 42

OneSignal

Self-serve customer engagement solution for Push Notifications, Email, SMS & In-App

StatusListed · link checked 25 Oct 2026
AuthenticationFree API key (signup)
Browser CORSVaries — test in the playground
Free limitsFree tier — confirm exact limits in the official docs

💰 The free tier, honestly

Cost to startA free key from the official site (signup)
Free limitsFree tier — confirm exact limits in the official docs
Use from a browser?Varies — test it in the playground above
Paid plansWe verify the free tier weekly and never publish prices we cannot check — current paid pricing lives on the official site

Free tier re-verified 25 Oct 2026. Providers change limits without asking anyone — if a limit here ever disagrees with the official docs, the docs win and we fix the listing at the next weekly check.

Official docs ↗

📋 Listed tier — endpoint check pending

This API comes from the open public-apis dataset (MIT license), and its official site passed our link check on 25 Oct 2026 (HTTP 200). We have not yet run a full endpoint test on it — those happen in weekly passes, most-wanted first. Until then: no playground and no fake badges, just an honest listing.

Visit the official site ↗

🏅 Own this API?

Add the live-verified badge to your docs or repo — it only ever displays the status from our latest check.

<a href="https://freeapis.akclnt.com/api/onesignal/"><img src="https://freeapis.akclnt.com/badge/onesignal.svg" alt="OneSignal — live-verified free API on AKCLNT Free APIs"></a>

📜 Full check history & uptime · Status as JSON · Health score: D · 42/100

🔔 Watch this API — a quiet feed that only speaks the week its status changes (down, recovered, reclassified). How it works

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