Pusher

Pusher is a realtime communication platform owned by MessageBird/Bird. Its primary product Channels provides pub/sub messaging over WebSocket and HTTP; Beams provides device push notifications. Authentication uses an app key + secret per Pusher app. Channels and Beams are still actively sold; the older Chatkit product was sunset.

Pusher publishes 5 API contracts indexed on the APIs.io network, including Channels API, Events API, and 3 more. Tagged areas include Real-Time, WebSocket, Pub/Sub, Push Notifications, and Messaging.

The Pusher catalog on APIs.io includes 1 event-driven AsyncAPI specification and 1 Spectral governance ruleset.

Pusher’s developer surface includes authentication, developer portal, documentation, pricing, GitHub presence, engineering blog, and 10 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

38.6/100 thin ▬ flat Agent 21/100 agent aware Front door AI 1/6 silent Heartbeat 100/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 published contract

Real-Time WebSocket Pub/Sub Push Notifications Messaging

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 38.6/100 · thin

Contract Quality 9.9 / 19

Developer Ergonomics 5.0 / 15

Access Clarity 3.9 / 15

Operational Transparency 3.9 / 10

Contract Governance 1.0 / 9

Discoverability 5.0 / 8

Regulatory Posture 3.4 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 21/100 · 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 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 6 / 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 Horizontal (data, software, accessibility, platform) 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/pusher/"><img src="https://apis.io/badge/pusher/card.svg" alt="Pusher 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
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)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

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 26.3 — up to +14.7 composite points
Developer Ergonomics scores 33.3 — up to +13.3 composite points
Contract Quality scores 52.7 — up to +11.8 composite points

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.

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/pusher/apis.yml: open an issue on github.com/api-evangelist/pusher 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 →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Mobile SDK Publishers (Play SDK Index, CocoaPods, ADA certification)	long-tail	12.1 (thin)	-	-
Official SDKs on Packagist, pub.dev and Hex	long-tail	12.1 (thin)	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 4

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.

Pub/Sub

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

WebSockets

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

OpenAPI

measured — observed by APIs.io (published)

AsyncAPI

measured — observed by APIs.io (published)

APIs 5

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

Pusher Channels API

Pub/sub channels over WebSocket (client) and HTTP (server publish). Public, private, and presence channels supported. WebSocket endpoint at ws-{cluster}.pusher.com. Cluster host...

Pusher Beams API

Server API for sending iOS, Android, and Web push notifications via FCM, APNs, and Web Push.

Pusher Channels API

The Channels API from Pusher — 3 operation(s) for channels.

Pusher Events API

The Events API from Pusher — 2 operation(s) for events.

Pusher Users API

The Users API from Pusher — 1 operation(s) for users.

Open Collections 4

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

Pusher HTTP Channels API

OPEN COLLECTION

Pusher HTTP Channels Events API

OPEN COLLECTION

Pusher HTTP Channels Users API

OPEN COLLECTION

Pusher Channels HTTP API

OPEN COLLECTION

Pusher API pricing

Not yet checked against Pusher's own pricing page. Compiled by API Evangelist on 2026-05-08 from pusher.com/channels/pricing; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Sandbox freemium	Free
Startup subscription	$49.00 per monthly subscription / month
Pro subscription	$99.00 per monthly subscription / month
Business subscription	$299.00 per monthly subscription / month
Premium subscription	$499.00 per monthly subscription / month
Growth subscription	$699.00 per monthly subscription / month
Plus subscription	$899.00 per monthly subscription / month
Growth Plus subscription	$1199.00 per monthly subscription / month

All 9 plans, limits and sources →

Rate limits

Sandbox connections: 100 concurrent connections
Sandbox messages: 200000 messages per day
Pro connections: 2000 concurrent connections

Compiled by API Evangelist, not yet checked against Pusher's documentation. All 9 limits →

Pricing Plans 1

Published pricing tiers and plan structures.

Pusher Plans Pricing

9 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Pusher Rate Limits

9 limits

RATE LIMITS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

Pusher

SLA

FinOps 1

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

Pusher Finops

FINOPS

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Pusher Channels WebSocket Protocol

AsyncAPI definition of the Pusher Channels public WebSocket wire protocol (protocol version 7). Pusher Channels is a pub/sub realtime messaging service. Clients connect over Web...

ASYNCAPI

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Pusher — asyncapi rules

7 rules · 1 errors 6 warnings

SPECTRAL

Security Posture 4

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

Pusher Authentication

apiKey · 1 scheme

SECURITY

Pusher Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Pusher Vulnerability Disclosure

Hackerone · security.txt · contact published

SECURITY

Pusher Trust Center

ISO 27001, HIPAA, GDPR

SECURITY

Agentic Access 1

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

Pusher Agentic Access

6 operations · 3 acting · 1 human-in-the-loop

6 operations · 3 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

Portal

Portal

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

GitHub

GitHub

Access & Security 4

Authentication, authorization, and security posture

TrustCenter

TrustCenter

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 2

Status, limits, changes, and where to get help

StatusPage

StatusPage

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

Website

Website

LinkedIn

Blog

Blog

Source (apis.yml)

aid: pusher
url: https://raw.githubusercontent.com/api-evangelist/pusher/refs/heads/main/apis.yml
name: Pusher
kind: company
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
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/pusher.png
tags:
- Real-Time
- WebSocket
- Pub/Sub
- Push Notifications
- Messaging
tags_raw:
- Realtime
- WebSockets
- Pub/Sub
- Push Notifications
- Messaging
created: '2026-05-08'
modified: '2026-05-29'
specificationVersion: '0.23'
description: Pusher is a realtime communication platform owned by MessageBird/Bird. Its primary product Channels provides
  pub/sub messaging over WebSocket and HTTP; Beams provides device push notifications. Authentication uses an app key + secret
  per Pusher app. Channels and Beams are still actively sold; the older Chatkit product was sunset.
apis:
- aid: pusher:channels-api
  name: Pusher Channels API
  tags:
  - Pub/Sub
  - WebSocket
  - HTTP
  - Messaging
  tags_raw:
  - Pub/Sub
  - WebSockets
  - HTTP
  - Messaging
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  baseURL: https://api-{cluster}.pusher.com/apps/{app_id}
  humanURL: https://pusher.com/docs/channels
  description: Pub/sub channels over WebSocket (client) and HTTP (server publish). Public, private, and presence channels
    supported. WebSocket endpoint at ws-{cluster}.pusher.com. Cluster hostnames include eu, us2, us3, ap1, ap2, ap3, etc.
  properties:
  - type: Documentation
    url: https://pusher.com/docs/channels
  - type: Pricing
    url: https://pusher.com/channels/pricing
  - type: AsyncAPI
    url: asyncapi/pusher-asyncapi.yml
  x-features:
  - Public, private, presence channels
  - End-to-end encryption (E2E)
  - Webhooks for events
  - Multi-region clusters
  x-use-cases:
  - In-app chat
  - Live dashboards
  - Realtime collaboration
- aid: pusher:beams-api
  name: Pusher Beams API
  tags:
  - Push Notifications
  - Mobile
  - Web Push
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  baseURL: https://{instance_id}.pushnotifications.pusher.com
  humanURL: https://pusher.com/docs/beams
  description: Server API for sending iOS, Android, and Web push notifications via FCM, APNs, and Web Push.
  properties:
  - type: Documentation
    url: https://pusher.com/docs/beams
  - type: Pricing
    url: https://pusher.com/beams/pricing
  x-features:
  - Multi-platform push (iOS, Android, Web)
  - Authenticated user-targeted publishes
  - Device interest subscriptions
  x-use-cases:
  - Push to mobile apps
  - Web push notifications
- aid: pusher:pusher-channels-api
  name: Pusher Channels API
  description: The Channels API from Pusher — 3 operation(s) for channels.
  humanURL: https://pusher.com/docs/channels
  baseURL: https://api-{cluster}.pusher.com/apps/{app_id}
  tags:
  - Channels
  properties:
  - type: OpenAPI
    url: openapi/pusher-channels-api-openapi.yml
- aid: pusher:pusher-events-api
  name: Pusher Events API
  description: The Events API from Pusher — 2 operation(s) for events.
  humanURL: https://pusher.com/docs/channels
  baseURL: https://api-{cluster}.pusher.com/apps/{app_id}
  tags:
  - Event
  tags_raw:
  - Events
  properties:
  - type: OpenAPI
    url: openapi/pusher-events-api-openapi.yml
- aid: pusher:pusher-users-api
  name: Pusher Users API
  description: The Users API from Pusher — 1 operation(s) for users.
  humanURL: https://pusher.com/docs/channels
  baseURL: https://api-{cluster}.pusher.com/apps/{app_id}
  tags:
  - User
  tags_raw:
  - Users
  properties:
  - type: OpenAPI
    url: openapi/pusher-users-api-openapi.yml
common:
- type: Website
  url: https://www.pusher.com/
- type: AgenticAccess
  url: agentic-access/pusher-agentic-access.yml
- type: TrustCenter
  url: security/pusher-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/pusher-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/pusher-domain-security.yml
- type: Authentication
  url: authentication/pusher-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/pusher-app
- type: Portal
  url: https://pusher.com/
- type: Documentation
  url: https://pusher.com/docs
- type: Pricing
  url: https://pusher.com/channels/pricing
- type: GitHub
  url: https://github.com/pusher
- type: StatusPage
  url: https://status.pusher.com/
- type: Plans
  url: plans/pusher-plans-pricing.yml
- type: RateLimits
  url: rate-limits/pusher-rate-limits.yml
- type: FinOps
  url: finops/pusher-finops.yml
- type: Blog
  url: https://pusher.com/blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Pusher API — frequently asked questions

Does Pusher have an API?

Yes. APIs.io lists 5 APIs from Pusher, including Pusher Channels API, Pusher Beams API and Pusher Channels API, and 2 more.

Is there an OpenAPI specification for the Pusher API?

Yes. APIs.io indexes 3 OpenAPI specifications for Pusher, each linked for download from this page.

How do I authenticate with the Pusher API?

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

How much does the Pusher API cost?

APIs.io lists 9 pricing plans for Pusher, with each plan's price, limits and inclusions under Pricing on this page.

Is the Pusher API ready for AI agents?

Pusher has a Kin Score of 38.6 out of 100 (thin) and an Agent Readiness score of 20.7 (agent-aware), scored by API Evangelist on 2026-11-06.

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/pusher"

All providers

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

Every operation they expose

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

How their score was established

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