onesignal.com
OneSignal is a customer engagement platform for sending and automating messaging across push, email, SMS/RCS, in-app messages, and Live Activities. It provides tools for managing users, subscriptions, segmentation, campaigns, and delivery analytics.
OneSignal exposes a REST API at https://api.onesignal.com and a beta MCP server; both use OneSignal-issued API keys, with app-scoped and organization-scoped keys for REST and an app API key for MCP.
- OneSignal MCP Serverdiscovered
- OneSignal REST APIdiscovered
In the OneSignal dashboard, open your app and go to Settings > Keys & IDs as documented in Keys & IDs. Create or rotate an App API key; the secret value starts with os_v2_app_ and is only shown once when created or rotated. Store it securely. For quick REST setup, see Quick start API guide.
conventions · 1/8 published
- integrations.json✗
/.well-known/integrations.json - llms.txt✓https://onesignal.com/llms.txt
- API catalog✗
/.well-known/api-catalog - OpenAPI document✗
/api/schema/, /openapi.json, /swagger.json, /api/openapi.json, or /v1/openapi.json - MCP server card✗
/.well-known/mcp/server-card.json - OAuth protected resource✗
/.well-known/oauth-protected-resource - Agent card✗
/.well-known/agent-card.json - Agent skills✗
/.well-known/agent-skills/index.json
Publish these signals → /publishing