/API TERMS
API Terms/Developer Tools/OneSignal

OneSignal

onesignal.com

Customer engagement platform providing APIs and SDKs to send push notifications, email, SMS/RCS, and in-app messages across mobile and web.

The OneSignal API has freemium pricing; offers a free tier (Free plan $0/mo: 10,000/mo free email sends, unlimited mobile push sends, Journeys workflows, A/B testing). Verified 2026-07-08 with per-field source links.

Developer Tools Verified 2026-07-08 low confidence
Base URL
not documented null
no source
Auth
not documented null
no source
Free tier
Free plan $0/mo: 10,000/mo free email sends, unlimited mobile push sends, Journeys workflows, A/B testing
onesignal.com ↗
Pricing model
freemium
onesignal.com ↗
Pricing
Free $0/mo; Growth starts at $19/mo plus usage ($0.012 per mobile MAU, $0.004 per web push subscriber, email $1.50/1,000 sends after 20,000 free); Professional and Enterprise custom/contact sales
onesignal.com ↗
Rate limits
not documented null
no source
OpenAPI spec
not documented null
no source
MCP server
not documented null
no source