OneSignal
Self-serve customer engagement solution for Push Notifications, Email, SMS & In-App
- Authentication
- API Key
- HTTPS
- Yes
- CORS
- Unknown
- Category
- Development
- Data source
- public-apis
- Documentation / URL
- https://documentation.onesignal.com/docs/onesignal-api
Overview
OneSignal provides push/email/SMS engagement — key-based (an invalid key returns 401, verified).
Quick Start
Apps (replace YOUR_KEY):
curl "https://onesignal.com/api/v1/apps" \
-H "Authorization: Basic YOUR_KEY"Authentication
- Register at onesignal.com → REST API key.
- Send it as
Authorization: Basic(invalid → 401, verified).
Rate Limits & Notes
- Free tier with limits (check the docs); paid plans scale.
- Push, email, SMS, in-app.
FAQ
Is OneSignal free? Free tier with limits; more is paid.
Why 401? Invalid keys return 401 (verified) — register for a key.
What’s the auth style?
Authorization: Basic.
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