NotificationAPI

NotificationAPI is notifications infrastructure for developers. A single REST API and drop-in in-app inbox component send multi-channel notifications - email, SMS, mobile and web push, in-app inbox, automated voice call, and Slack - while managing user identities, per-user preferences and opt-outs, templates, scheduling, and delivery logs. All calls are scoped to a clientId and authenticated with HTTP Basic auth.

NotificationAPI publishes 7 API contracts indexed on the APIs.io network, including In-App Inbox API, Logs API, Notifications API, and 4 more. Tagged areas include Notification, Messaging, Email, SMS, and Push.

NotificationAPI’s developer surface includes authentication, engineering blog, documentation, and 8 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

26.2/100 thin ▬ flat Agent 25/100 agent aware Front door AI 6/6 dominant saas Full breakdown ↓
scored 2026-10-23 · rubric v0.25.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 published contract

Notification Messaging Email SMS Push In-App Inbox

Kin Score

Kin Score How this is scored →
scored 2026-10-23 · rubric v0.25.0

Composite quality — 26.2/100 · thin

Contract Quality 9.5 / 19

Developer Ergonomics 4.7 / 15

Access Clarity 1.2 / 15

Operational Transparency 1.0 / 10

Contract Governance 0.0 / 9

Discoverability 5.0 / 8

Regulatory Posture 1.5 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 25/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

Regulatory Posture applies to this provider. Its tags matched the Telecommunications regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

WebSub

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

APIs 7

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

NotificationAPI In-App Inbox API

Read and update a user's in-app (INAPP_WEB) notifications.

NotificationAPI Logs API

Query delivery and event logs.

NotificationAPI Notifications API

Configure notifications and their subNotifications.

NotificationAPI Schedule API

Update or delete scheduled notifications.

NotificationAPI Send API

Send and retract notifications across channels.

NotificationAPI User Preferences API

Read and write per-user channel and opt-out preferences.

NotificationAPI Users API

Identify and manage the users you notify.

Scroll for all 7

Open Collections 8

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

NotificationAPI REST In-App Inbox API

OPEN COLLECTION

NotificationAPI REST In-App Inbox Logs API

OPEN COLLECTION

NotificationAPI REST In-App Inbox Notifications API

OPEN COLLECTION

NotificationAPI REST In-App Inbox Schedule API

OPEN COLLECTION

NotificationAPI REST In-App Inbox Send API

OPEN COLLECTION

NotificationAPI REST In-App Inbox User Preferences API

OPEN COLLECTION

NotificationAPI REST In-App Inbox Users API

OPEN COLLECTION

NotificationAPI REST API

OPEN COLLECTION

Scroll for all 8

Pricing Plans 1

Published pricing tiers and plan structures.

Notificationapi Plans Pricing

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Notificationapi Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Notificationapi Finops

FINOPS

Security Posture 2

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

Notificationapi Authentication

http · 1 scheme

SECURITY

Notificationapi Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Notificationapi Agentic Access

12 operations · 10 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

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

Blog

Blog

LinkedIn

Website

Website

Source (apis.yml)

aid: notificationapi
url: https://raw.githubusercontent.com/api-evangelist/notificationapi/refs/heads/main/apis.yml
name: NotificationAPI
kind: company
description: NotificationAPI is notifications infrastructure for developers. A single REST API and drop-in in-app inbox component
  send multi-channel notifications - email, SMS, mobile and web push, in-app inbox, automated voice call, and Slack - while
  managing user identities, per-user preferences and opt-outs, templates, scheduling, and delivery logs. All calls are scoped
  to a clientId and authenticated with HTTP Basic auth.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  - url: https://www.notificationapi.com/
    status: 301
    note: declared website redirects to https://www.pingram.io/ — a different registrable domain (notificationapi.com -> pingram.io),
      possible rename or acquisition (probed 2026-09-03, roadmap#169)
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/notificationapi.png
tags:
- Notification
- Messaging
- Email
- SMS
- Push
- In-App Inbox
tags_raw:
- Notifications
- Messaging
- Email
- SMS
- Push
- In-App Inbox
created: '2026-07-01'
modified: '2026-07-01'
specificationVersion: '0.23'
apis:
- aid: notificationapi:notificationapi-in-app-inbox-api
  name: NotificationAPI In-App Inbox API
  description: Read and update a user's in-app (INAPP_WEB) notifications.
  humanURL: https://docs.notificationapi.com/reference/send
  baseURL: https://api.notificationapi.com/{clientId}
  tags:
  - In-App Inbox
  properties:
  - type: OpenAPI
    url: openapi/notificationapi-in-app-inbox-api-openapi.yml
  - type: Documentation
    url: https://docs.notificationapi.com/reference/send
  - type: APIReference
    url: https://docs.notificationapi.com/reference/api-reference
  - type: Documentation
    url: https://docs.notificationapi.com/reference/schedule
  - type: Documentation
    url: https://docs.notificationapi.com/reference/identify-user
  - type: Documentation
    url: https://docs.notificationapi.com/reference/set-user-preferences
  - type: Documentation
    url: https://docs.notificationapi.com/reference/create-sub-notification
  - type: Documentation
    url: https://docs.notificationapi.com/reference/in-app-notifications
  - type: Documentation
    url: https://docs.notificationapi.com/reference/query-logs
- aid: notificationapi:notificationapi-logs-api
  name: NotificationAPI Logs API
  description: Query delivery and event logs.
  humanURL: https://docs.notificationapi.com/reference/send
  baseURL: https://api.notificationapi.com/{clientId}
  tags:
  - Logs
  properties:
  - type: OpenAPI
    url: openapi/notificationapi-logs-api-openapi.yml
  - type: Documentation
    url: https://docs.notificationapi.com/reference/send
  - type: APIReference
    url: https://docs.notificationapi.com/reference/api-reference
  - type: Documentation
    url: https://docs.notificationapi.com/reference/schedule
  - type: Documentation
    url: https://docs.notificationapi.com/reference/identify-user
  - type: Documentation
    url: https://docs.notificationapi.com/reference/set-user-preferences
  - type: Documentation
    url: https://docs.notificationapi.com/reference/create-sub-notification
  - type: Documentation
    url: https://docs.notificationapi.com/reference/in-app-notifications
  - type: Documentation
    url: https://docs.notificationapi.com/reference/query-logs
- aid: notificationapi:notificationapi-notifications-api
  name: NotificationAPI Notifications API
  description: Configure notifications and their subNotifications.
  humanURL: https://docs.notificationapi.com/reference/send
  baseURL: https://api.notificationapi.com/{clientId}
  tags:
  - Notification
  tags_raw:
  - Notifications
  properties:
  - type: OpenAPI
    url: openapi/notificationapi-notifications-api-openapi.yml
  - type: Documentation
    url: https://docs.notificationapi.com/reference/send
  - type: APIReference
    url: https://docs.notificationapi.com/reference/api-reference
  - type: Documentation
    url: https://docs.notificationapi.com/reference/schedule
  - type: Documentation
    url: https://docs.notificationapi.com/reference/identify-user
  - type: Documentation
    url: https://docs.notificationapi.com/reference/set-user-preferences
  - type: Documentation
    url: https://docs.notificationapi.com/reference/create-sub-notification
  - type: Documentation
    url: https://docs.notificationapi.com/reference/in-app-notifications
  - type: Documentation
    url: https://docs.notificationapi.com/reference/query-logs
- aid: notificationapi:notificationapi-schedule-api
  name: NotificationAPI Schedule API
  description: Update or delete scheduled notifications.
  humanURL: https://docs.notificationapi.com/reference/send
  baseURL: https://api.notificationapi.com/{clientId}
  tags:
  - Schedule
  properties:
  - type: OpenAPI
    url: openapi/notificationapi-schedule-api-openapi.yml
  - type: Documentation
    url: https://docs.notificationapi.com/reference/send
  - type: APIReference
    url: https://docs.notificationapi.com/reference/api-reference
  - type: Documentation
    url: https://docs.notificationapi.com/reference/schedule
  - type: Documentation
    url: https://docs.notificationapi.com/reference/identify-user
  - type: Documentation
    url: https://docs.notificationapi.com/reference/set-user-preferences
  - type: Documentation
    url: https://docs.notificationapi.com/reference/create-sub-notification
  - type: Documentation
    url: https://docs.notificationapi.com/reference/in-app-notifications
  - type: Documentation
    url: https://docs.notificationapi.com/reference/query-logs
- aid: notificationapi:notificationapi-send-api
  name: NotificationAPI Send API
  description: Send and retract notifications across channels.
  humanURL: https://docs.notificationapi.com/reference/send
  baseURL: https://api.notificationapi.com/{clientId}
  tags:
  - Send
  properties:
  - type: OpenAPI
    url: openapi/notificationapi-send-api-openapi.yml
  - type: Documentation
    url: https://docs.notificationapi.com/reference/send
  - type: APIReference
    url: https://docs.notificationapi.com/reference/api-reference
  - type: Documentation
    url: https://docs.notificationapi.com/reference/schedule
  - type: Documentation
    url: https://docs.notificationapi.com/reference/identify-user
  - type: Documentation
    url: https://docs.notificationapi.com/reference/set-user-preferences
  - type: Documentation
    url: https://docs.notificationapi.com/reference/create-sub-notification
  - type: Documentation
    url: https://docs.notificationapi.com/reference/in-app-notifications
  - type: Documentation
    url: https://docs.notificationapi.com/reference/query-logs
- aid: notificationapi:notificationapi-user-preferences-api
  name: NotificationAPI User Preferences API
  description: Read and write per-user channel and opt-out preferences.
  humanURL: https://docs.notificationapi.com/reference/send
  baseURL: https://api.notificationapi.com/{clientId}
  tags:
  - User Preferences
  properties:
  - type: OpenAPI
    url: openapi/notificationapi-user-preferences-api-openapi.yml
  - type: Documentation
    url: https://docs.notificationapi.com/reference/send
  - type: APIReference
    url: https://docs.notificationapi.com/reference/api-reference
  - type: Documentation
    url: https://docs.notificationapi.com/reference/schedule
  - type: Documentation
    url: https://docs.notificationapi.com/reference/identify-user
  - type: Documentation
    url: https://docs.notificationapi.com/reference/set-user-preferences
  - type: Documentation
    url: https://docs.notificationapi.com/reference/create-sub-notification
  - type: Documentation
    url: https://docs.notificationapi.com/reference/in-app-notifications
  - type: Documentation
    url: https://docs.notificationapi.com/reference/query-logs
- aid: notificationapi:notificationapi-users-api
  name: NotificationAPI Users API
  description: Identify and manage the users you notify.
  humanURL: https://docs.notificationapi.com/reference/send
  baseURL: https://api.notificationapi.com/{clientId}
  tags:
  - User
  tags_raw:
  - Users
  properties:
  - type: OpenAPI
    url: openapi/notificationapi-users-api-openapi.yml
  - type: Documentation
    url: https://docs.notificationapi.com/reference/send
  - type: APIReference
    url: https://docs.notificationapi.com/reference/api-reference
  - type: Documentation
    url: https://docs.notificationapi.com/reference/schedule
  - type: Documentation
    url: https://docs.notificationapi.com/reference/identify-user
  - type: Documentation
    url: https://docs.notificationapi.com/reference/set-user-preferences
  - type: Documentation
    url: https://docs.notificationapi.com/reference/create-sub-notification
  - type: Documentation
    url: https://docs.notificationapi.com/reference/in-app-notifications
  - type: Documentation
    url: https://docs.notificationapi.com/reference/query-logs
common:
- type: AgenticAccess
  url: agentic-access/notificationapi-agentic-access.yml
- type: DomainSecurity
  url: security/notificationapi-domain-security.yml
- type: Authentication
  url: authentication/notificationapi-authentication.yml
- url: https://www.pingram.io/blog
  type: Blog
- type: GitHubOrganization
  url: https://github.com/notificationapi-com
- type: LinkedIn
  url: https://www.linkedin.com/company/notificationapi
- type: Website
  url: https://www.notificationapi.com/
- type: Documentation
  url: https://docs.notificationapi.com
- type: Plans
  url: plans/notificationapi-plans-pricing.yml
- type: RateLimits
  url: rate-limits/notificationapi-rate-limits.yml
- type: FinOps
  url: finops/notificationapi-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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