# Pusher

**Canonical:** https://apis.io/providers/pusher/  
**Website:** https://pusher.com/  
**APIs profiled:** 5

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.

## Kin Score — 41.9 / 100 (developing)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 41.9).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 63.5 |
| Governance | 11.4 |
| Contract Governance | 11.4 |
| Operational Transparency | 28.9 |
| Developer Ergonomics | 33.3 |
| Commercial Clarity | 34.2 |
| Access Clarity | 34.2 |

## Agent readiness — 30.3 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | derived |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Freemium · Self-serve signup — onboarding: self-serve, pricing: freemium, trial: no (confidence: high).

## APIs (5)

- **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.

## Agentic access (1)

- **Pusher Agentic Access** — 6 operations · 3 acting · 1 human-in-the-loop

## Security (4)

- **Pusher Authentication** — apiKey · 1 scheme
- **Pusher Domain Security** — TLSv1.3 · HSTS · DMARC
- **Pusher Vulnerability Disclosure** — Hackerone · security.txt · contact published
- **Pusher Trust Center** — ISO 27001, HIPAA, GDPR

## Plans (1)

- **Pusher Plans Pricing**

## Tags

Real-Time, WebSockets, Pub-Sub, Push Notifications, Messaging

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/pusher/). Scores are computed from the provider's own public artifacts under a published rubric.