OneSignal website screenshot

OneSignal

OneSignal is a customer engagement platform with push notifications, in-app messaging, email, SMS, and live activities. Free tier serves billions of messages monthly.

OneSignal publishes 4 APIs on the APIs.io network, including Apps API, Notifications API, Players API, and 1 more. Tagged areas include Notifications, Push, Email, SMS, and Mobile.

OneSignal’s developer surface includes engineering blog and 9 more developer resources.

🌐 Visit website 📡 Source on GitHub
30.0/100 thin ▬ flat Agent 30/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6
4 APIs
NotificationsPushEmailSMSMobile

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 30.0/100 · thin
Contract Quality 16.2 / 25
Developer Ergonomics 0.4 / 20
Commercial Clarity 5.8 / 20
Operational Transparency 3.4 / 13
Governance 0.0 / 12
Discoverability 6.5 / 10
Agent readiness — 30/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 0 / 10
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 7 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/onesignal: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 4

Individual APIs this provider publishes, each with its own machine-readable definition.

OneSignal Apps API

The Apps API from OneSignal — 21 operation(s) for apps.

OneSignal Notifications API

The Notifications API from OneSignal — 4 operation(s) for notifications.

OneSignal Players API

The Players API from OneSignal — 1 operation(s) for players.

OneSignal Templates API

The Templates API from OneSignal — 3 operation(s) for templates.

Open Collections 1

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

OneSignal

OPEN COLLECTION

GraphQL 1

GraphQL schemas published by this provider.

OneSignal GraphQL Schema

Conceptual GraphQL schema for the OneSignal multi-channel customer engagement platform, derived from the OneSignal REST API v1 (https://documentation.onesignal.com/reference).

GRAPHQL

Pricing Plans 1

Published pricing tiers and plan structures.

Onesignal Plans Pricing

1 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Onesignal Rate Limits

1 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Onesignal Finops

FINOPS

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Onesignal Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Onesignal Vulnerability Disclosure

security.txt · contact published

SECURITY

Resources

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LlmsText
LlmsText

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

VulnerabilityDisclosure
VulnerabilityDisclosure
 DomainSecurity
DomainSecurity

Operate 1

Status, limits, changes, and where to get help

RateLimits
RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans
Plans
 FinOps
FinOps

Company 3

The organization behind the API

LinkedIn
LinkedIn
 Website
Website
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: onesignal
url: https://raw.githubusercontent.com/api-evangelist/onesignal/refs/heads/main/apis.yml
name: OneSignal
kind: company
description: OneSignal is a customer engagement platform with push notifications, in-app messaging, email, SMS, and live activities.
  Free tier serves billions of messages monthly.
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/onesignal.png
tags:
- Notifications
- Push
- Email
- SMS
- Mobile
created: '2026-05-08'
modified: '2026-05-08'
specificationVersion: '0.19'
apis:
- aid: onesignal:onesignal-apps-api
  name: OneSignal Apps API
  description: The Apps API from OneSignal — 21 operation(s) for apps.
  humanURL: https://documentation.onesignal.com/reference
  baseURL: https://api.onesignal.com
  tags:
  - Apps
  properties:
  - type: OpenAPI
    url: openapi/onesignal-apps-api-openapi.yml
  - type: Documentation
    url: https://documentation.onesignal.com/reference
  - type: GraphQL
    url: graphql/onesignal-graphql.md
- aid: onesignal:onesignal-notifications-api
  name: OneSignal Notifications API
  description: The Notifications API from OneSignal — 4 operation(s) for notifications.
  humanURL: https://documentation.onesignal.com/reference
  baseURL: https://api.onesignal.com
  tags:
  - Notifications
  properties:
  - type: OpenAPI
    url: openapi/onesignal-notifications-api-openapi.yml
  - type: Documentation
    url: https://documentation.onesignal.com/reference
  - type: GraphQL
    url: graphql/onesignal-graphql.md
- aid: onesignal:onesignal-players-api
  name: OneSignal Players API
  description: The Players API from OneSignal — 1 operation(s) for players.
  humanURL: https://documentation.onesignal.com/reference
  baseURL: https://api.onesignal.com
  tags:
  - Players
  properties:
  - type: OpenAPI
    url: openapi/onesignal-players-api-openapi.yml
  - type: Documentation
    url: https://documentation.onesignal.com/reference
  - type: GraphQL
    url: graphql/onesignal-graphql.md
- aid: onesignal:onesignal-templates-api
  name: OneSignal Templates API
  description: The Templates API from OneSignal — 3 operation(s) for templates.
  humanURL: https://documentation.onesignal.com/reference
  baseURL: https://api.onesignal.com
  tags:
  - Templates
  properties:
  - type: OpenAPI
    url: openapi/onesignal-templates-api-openapi.yml
  - type: Documentation
    url: https://documentation.onesignal.com/reference
  - type: GraphQL
    url: graphql/onesignal-graphql.md
common:
- type: VulnerabilityDisclosure
  url: security/onesignal-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/onesignal-domain-security.yml
- type: GitHubOrganization
  url: https://github.com/OneSignal
- type: LinkedIn
  url: https://www.linkedin.com/company/onesignal
- type: Website
  url: https://onesignal.com/
- type: Plans
  url: plans/onesignal-plans-pricing.yml
- type: RateLimits
  url: rate-limits/onesignal-rate-limits.yml
- type: FinOps
  url: finops/onesignal-finops.yml
- type: Integrations
  url: https://onesignal.com/integrations
- type: LlmsText
  url: https://onesignal.com/llms.txt
- type: Blog
  url: https://onesignal.com/blog/feed
integrations:
- name: Adapty In-app subscriptions made profitable
- name: Brew Lovable for email marketing
- name: Mailgun The email service for developers
- name: Monkedo Monkey see, monkey do
- name: RudderStack Warehouse-native CDP
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com