PubNub
PubNub is a realtime communication platform supporting pub/sub, presence, chat, App Context (object metadata), Functions (server-less compute on the edge), Push Notifications, and IoT messaging across 1B+ devices. The PubNub REST API runs at ps.pndsn.com; SDKs handle the underlying long-poll / WebSocket protocol. Authentication uses a publish/subscribe key pair per keyset.
PubNub is listed with 2 APIs on the APIs.io network, including REST API, and 1 more. Tagged areas include Real-Time, WebSocket, Pub/Sub, IoT, and Messaging.
The PubNub catalog on APIs.io includes 1 event-driven AsyncAPI specification and 1 Spectral governance ruleset.
PubNub’s developer surface includes developer portal, documentation, pricing, GitHub presence, engineering blog, and 8 more developer resources.
Kin Score
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) | builds-on | 33.2 | - | - |
| Official SDKs on Packagist, pub.dev and Hex | builds-on | 33.2 | - | - |
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 6
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.
APIs 2
Individual APIs this provider publishes, each with its own machine-readable definition.
PubNub REST API
Single REST surface for publish, subscribe (long-poll), presence, history, signal, and App Context. Pub/Sub key authentication. SDKs available for 50+ languages and platforms.
PubNub Functions
Edge serverless functions executed on PubNub's network in response to messages, presence events, or HTTP triggers.
MCP Servers 1
Model Context Protocol servers that expose these APIs to AI agents.
Agent Skills 22
Packaged agent skills for driving this provider's APIs from an AI assistant.
pubnub-app-context
AGENT SKILLpubnub-app-developer
AGENT SKILLpubnub-chat
AGENT SKILLpubnub-choose-docs-path
AGENT SKILLpubnub-events-and-actions
AGENT SKILLpubnub-functions
AGENT SKILLpubnub-history
AGENT SKILLpubnub-illuminate
AGENT SKILLpubnub-keyset-management
AGENT SKILLpubnub-live-auctions
AGENT SKILLpubnub-live-betting-casino
AGENT SKILLpubnub-live-sport-updates
AGENT SKILLpubnub-live-stock-quote-updates
AGENT SKILLpubnub-live-voting
AGENT SKILLpubnub-multiplayer-gaming
AGENT SKILLpubnub-observability
AGENT SKILLpubnub-order-delivery-driver
AGENT SKILLpubnub-presence
AGENT SKILLpubnub-reliability
AGENT SKILLpubnub-scale
AGENT SKILLpubnub-security
AGENT SKILLpubnub-telemedicine
AGENT SKILLScroll for all 22
PubNub API pricing
Not yet checked against PubNub's own pricing page. Compiled by API Evangelist on 2026-05-08 from www.pubnub.com/pricing/; confirm before you rely on a figure. A free plan or tier is listed.
| Plan | Price |
|---|---|
| Free freemium | Free |
| Starter subscription | $98.00 per monthly subscription / month · Free |
| Pro 5K subscription | $370.00 per monthly subscription / month · Free |
| Pro 10K subscription | $550.00 per monthly subscription / month · Free |
| Pro 25K subscription | $1130.00 per monthly subscription / month |
| Enterprise (100K+ MAU) enterprise | — |
Plan details, limits and sources →
Rate limits
- Per-channel publish (soft): 100 messages per second
- Functions per-instance: 100 invocations per second
- MAU monthly cap: unlimited mau per month
Compiled by API Evangelist, not yet checked against PubNub's documentation. Rate-limit details →
Pricing Plans 1
Published pricing tiers and plan structures.
Pubnub Plans Pricing
PLANSRate Limits 1
Documented rate limits and quota policies.
Pubnub Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals for API financial operations.
Pubnub Finops
FINOPSEvent Specifications 1
AsyncAPI definitions for this provider's event-driven and streaming APIs.
PubNub Realtime Streaming API
AsyncAPI description of PubNub's realtime subscribe surface — the event stream that delivers messages, signals, presence updates, file events, message-action events, and App Con...
ASYNCAPISpectral Rules 1
Spectral governance rulesets for linting and validating these APIs.
PubNub — asyncapi rules
SPECTRALSecurity Posture 1
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Resources
Get Started 1
Portal, sign-up, and the first successful call
Documentation 1
Reference material describing how the API behaves
Agent Surfaces 1
MCP servers, agent skills, and machine-readable catalogs
Build 1
SDKs, sample code, and the tooling you integrate with
Access & Security 1
Authentication, authorization, and security posture
Operate 2
Status, limits, changes, and where to get help
Commercial 3
Pricing, plans, and the legal terms of use
Company 3
The organization behind the API
Source (apis.yml)
PubNub API — frequently asked questions
Does PubNub have an API?
Yes. APIs.io lists 2 APIs from PubNub, including PubNub REST API and PubNub Functions.
How much does the PubNub API cost?
APIs.io lists 6 pricing plans for PubNub, with each plan's price, limits and inclusions under Pricing on this page.
Does PubNub have an MCP server?
Yes. APIs.io lists 1 MCP server for PubNub: Remote MCP server at mcp.pubnub.com over HTTP.
Is the PubNub API ready for AI agents?
PubNub has a Kin Score of 31.1 out of 100 (thin) and an Agent Readiness score of 45.2 (agent-ready), 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.