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.

The NotificationAPI catalog on APIs.io includes 1 Spectral governance ruleset.

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

🌐 Visit website 📡 Profile data on GitHub

27.0/100 thin ▬ flat Agent 25/100 agent aware Front door AI 6/6 dominant Heartbeat 15/100 dormant saas Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · 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 2026-11-13 · rubric v0.28.0

Composite quality — 27.0/100 · thin

Contract Quality 9.5 / 19

Developer Ergonomics 4.7 / 15

Access Clarity 1.0 / 15

Operational Transparency 1.2 / 10

Contract Governance 1.2 / 9

Discoverability 5.0 / 8

Regulatory Posture 0.8 / 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

MCP Tool Quality 6 / 6

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/.

Show this score on your site.

It updates itself when the score changes. Paste this where you link to your API docs:

<a href="https://apis.io/providers/notificationapi/"><img src="https://apis.io/badge/notificationapi/card.svg" alt="NotificationAPI on APIs.io — Kin Score by API Evangelist"></a>

Other styles, a README pill and a shields.io endpoint are on the badge page.

Raise your score.

Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship Ask about this →
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented) Ask about this →
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document Ask about this →
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented) Ask about this →

8 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 6.4 — up to +18.7 composite points Ask about this →
Developer Ergonomics scores 31.0 — up to +13.8 composite points Ask about this →
Contract Quality scores 50.8 — up to +12.3 composite points Ask about this →

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/notificationapi/apis.yml: open an issue on github.com/api-evangelist/notificationapi to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 2

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

OpenAPI

measured — observed by APIs.io (published)

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

NotificationAPI pricing

Not yet checked against NotificationAPI's own pricing page. Compiled by API Evangelist on 2026-07-01 from www.notificationapi.com/pricing; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Free free	Free
Startup subscription	—
Business subscription	—
Enterprise enterprise	—

Plan details, limits and sources →

Rate limits

REST API Requests: see provider documentation requests
Monthly Active Users (MAU): per plan allowance users
Notification Volume: per plan allowance notifications

Compiled by API Evangelist, not yet checked against NotificationAPI's documentation. All 5 limits →

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

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

NotificationAPI API Rules

66 rules · 63 error-severity 1 warn-severity 2 info-severity

SPECTRAL

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 (API Evangelist recommendations) 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
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  - 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: '2026-11-13'
  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

NotificationAPI — frequently asked questions

Does NotificationAPI have an API?

Yes. APIs.io lists 7 APIs from NotificationAPI, including NotificationAPI In-App Inbox API, NotificationAPI Logs API and NotificationAPI Notifications API, and 4 more.

Is there an OpenAPI specification for the NotificationAPI?

Yes. APIs.io indexes 7 OpenAPI specifications for NotificationAPI, each linked for download from this page.

How do I authenticate with the NotificationAPI?

NotificationAPI uses bearer-token authentication (http · 1 scheme). The details are profiled on APIs.io as NotificationAPI Authentication.

How much does the NotificationAPI cost?

APIs.io lists 4 pricing plans for NotificationAPI, with each plan's price, limits and inclusions under Pricing on this page.

Is the NotificationAPI ready for AI agents?

NotificationAPI has a Kin Score of 27.0 out of 100 (thin) and an Agent Readiness score of 24.6 (agent-aware), scored by API Evangelist on 2026-11-13.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/notificationapi"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/notificationapi/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/notificationapi/evidence"

Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.