established · 0.5 capability schema

Pub-Sub

Score 24.3 / 100 20 providers +26 via APIs 36 APIs Search apis.io →

Providers using this tag (20)

Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.

Exemplar 2 Complete, well-documented, and agent-ready
Strong 1 Solid coverage with minor gaps
Developing 8 Usable, with meaningful gaps to close
Thin 8 Limited public surface area
Minimal 1 Almost no public developer surface

APIs with this tag (36)

Ranked by the provider's API Evangelist rating — the Kin Score is scored per provider, not per API, so every API of a provider shares its band. How the rating works →

Exemplar 5 Complete, well-documented, and agent-ready
Strong 3 Solid coverage with minor gaps
Developing 12 Usable, with meaningful gaps to close
Thin 13 Limited public surface area
Pusher Channels APIPub/sub channels over WebSocket (client) and HTTP (server publish). Public, private, and presence channels ...38.7Wazo Websocket Event Stream (wazo-websocketd)WebSocket gateway onto the Wazo internal event bus. An authenticated client subscribes to named platform ev...38.4Syndica Solana RPC (WebSocket) APIStandard Solana RPC PubSub WebSocket service supporting accountSubscribe, programSubscribe, signatureSubscr...36.4WIS2 Global Broker (MQTT)The WIS2 Global Broker provides an MQTT(S) publish-subscribe service that re-publishes real-time weather no...34.9Apache EventMesh Messaging APIEvent-driven messaging via TCP, HTTP, and gRPC protocols. Events follow the CloudEvents specification. Supp...32.6PubNub REST APISingle REST surface for publish, subscribe (long-poll), presence, history, signal, and App Context. Pub/Sub...32.6IPFS Pubsub APIThe Pubsub API from IPFS — 4 operation(s) for pubsub.32.1RabbitMQ AMQP Messaging APIAMQP 0-9-1 messaging protocol for producing and consuming messages via exchanges, queues, and bindings with...31.3Spring Data RedisEasy configuration and access to Redis from Spring applications. Provides low-level and high-level abstract...31.3Apache Pulsar Messaging APIPulsar messaging protocol for producing and consuming messages on topics, with support for multiple subscri...31.0Sui PubSub APIThe PubSub API from Sui — 2 operation(s) for pubsub.30.8MQTTOASIS standard messaging protocol for the Internet of Things. Lightweight publish/subscribe transport for r...28.8Roblox Open Cloud Messaging ServiceThe Messaging Service Open Cloud API publishes messages to a topic that running game servers can subscribe ...28.7
Emerging 3 Early or largely undocumented

Companies reaching this through an API (26)

These companies publish an API, specification or operation carrying “Pub-Sub” but do not classify their business under it. Listed unranked and kept out of the count above, because one tagged operation is not a statement about what a company does.

Adobe Suite Encore IBM IPFS Jack Henry & Associates Microsoft Azure Integration Services Nitric Oracle Oracle Database Oracle Siebel RabbitMQ Roblox Salesforce Salesforce Sales Cloud SAP Integration Suite SCADA Scalar Soketi SPAN Spring Data Sui Syndica ThingSpeak Twitch Wazo World Meteorological Organization

Score breakdown

Frequency
48.4
log-scaled weighted occurrences
Breadth
0.5
spread across providers
Quality lift
50.2
mean composite of providers using it
Cohesion
13.4
strength of nearest seed neighbor

Where this tag sits

Messaging broader

Related tags

Event-Driven 12 co-occurrences Event Streaming 8 co-occurrences Topic 11 co-occurrences CloudEvents 5 co-occurrences MQTT 6 co-occurrences Messaging 30 co-occurrences Kafka 5 co-occurrences Queues 7 co-occurrences

Where this tag comes from

Provider tag20
Api tag36
Openapi tag5
Openapi op tag16

Work with this as data

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Tools for tags

7 MCP tools reach this
  • find_tagsBrowse and filter every tag in the catalog.
  • get_cohortThis tag as a scored cohort — every provider carrying it, with scores.
  • cohort_statsPRO — the distribution across this tag: mean, median, band split, adoption rates.
  • cohort_rankingsPRO — the leaderboard, on composite AND agent-readiness axes.
  • 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 tag
curl "https://apis.io/api/v1/tags/pub-sub"
All tags
curl "https://apis.io/api/v1/tags?limit=25"
As a scored cohort
curl "https://apis.io/api/v1/cohorts/tag/pub-sub"
The distribution (Pro)
curl "https://apis.io/api/v1/cohorts/tag/pub-sub/stats" \
  -H "X-API-Key: $APIS_IO_KEY"

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