Azure Web PubSub

Azure Web PubSub is a fully-managed service that enables building real-time, two-way messaging applications using publish-subscribe patterns over WebSockets. It supports broadcasting messages to clients in groups, sending messages to specific connections or users, and integrating with serverless event handlers for scalable real-time experiences.

Azure Web PubSub publishes 6 API contracts indexed on the APIs.io network, including Client and Upstream Events, Hub API, Permission API, and 3 more. Tagged areas include Messaging, Pub/Sub, Real-Time, Serverless, and WebSocket.

The Azure Web PubSub catalog on APIs.io includes 1 event-driven AsyncAPI specification, 1 JSON-LD context, and 2 Spectral governance rulesets.

Azure Web PubSub’s developer surface includes CLI, changelog, authentication, developer portal, documentation, getting-started guide, pricing, and 61 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

66.6/100 exemplar ▲ 12.8 Agent 24/100 agent aware saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

3 published contracts 2 Agent Skills

Messaging Pub/Sub Real-Time Serverless WebSocket

Kin Score

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

Composite quality — 66.6/100 · exemplar

Contract Quality 12.2 / 19

Developer Ergonomics 9.4 / 15

Access Clarity 11.4 / 15

Operational Transparency 7.4 / 10

Contract Governance 2.0 / 9

Discoverability 5.9 / 8

Regulatory Posture 5.1 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 24/100 · 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 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 6 / 6

Agent Skills 5 / 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/.

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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)
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
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)

6 more unmet checks in the Agent Readiness table above.

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

Contract Governance scores 22.0 — up to +9.4 composite points
Contract Quality scores 64.9 — up to +8.8 composite points
Developer Ergonomics scores 62.5 — up to +7.5 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/microsoft-azure-web-pubsub/apis.yml: open an issue on github.com/api-evangelist/microsoft-azure-web-pubsub 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 5

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

OPEN COLLECTION

Azure Web PubSub Service Data Plane REST ClientToken Permission API

OPEN COLLECTION

Azure Web PubSub Service Data Plane REST API

OPEN COLLECTION

Arazzo Workflows 12

ARAZZO

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Agent Skills 2

Packaged agent skills for driving this provider's APIs from an AI assistant.

broadcast-to-group

AGENT SKILL

issue-client-access

AGENT SKILL

Azure Web PubSub API pricing

Prices published by Azure Web PubSub, read 2026-10-28 from azure.microsoft.com/en-us/pricing/details/web-pubsub/. A free plan or tier is listed.

Plan	Price
Free	Free per unit per day Includes: Concurrent Connections per Unit 20; Messages/Unit/Day 20,000; Max Units 1
Standard	$- per unit per day Includes: 1,000 concurrent connections per unit; unlimited messages (free for the first 1,000,000 messages); M
Premium	$- per unit per day Includes: 1,000 concurrent connections per unit; unlimited messages (free for the first 1,000,000 messages); M

Plan details, limits and sources →

Rate limits

Units per instance (Free): Azure Web PubSub Service units per instance for Free tier 1 1
Units per instance (Standard/Premium_P1): Azure Web PubSub Service units per instance for Standard/Premium_P1 tier 100 100
Units per subscription per region (Free): Azure Web PubSub Service units per subscription per region for Free tier 5 5

All 9 limits →

Pricing Plans 1

Published pricing tiers and plan structures.

Microsoft Azure Web Pubsub Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Microsoft Azure Web Pubsub 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.

Azure Web PubSub

SLA

FinOps 1

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

Microsoft Azure Web Pubsub Finops

FINOPS

Event Specifications 1

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

Azure Web PubSub

Azure Web PubSub is a fully managed real-time messaging service from Microsoft Azure that lets clients exchange publish/subscribe messages over WebSockets without operating WebS...

ASYNCAPI

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Microsoft Azure Web Pubsub Context

93 classes · 122 properties

JSON-LD

Spectral Rules 2

Spectral governance rulesets for linting and validating these APIs.

Azure Web PubSub — asyncapi rules

8 rules · 1 errors 6 warnings 1 info

SPECTRAL

Azure Web PubSub API Rules

56 rules · 42 errors 7 warnings 7 info

SPECTRAL

4 properties

JSON SCHEMA

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Security Posture 2

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

Microsoft Azure Web Pubsub Authentication

http/oauth2 · 2 schemes

SECURITY

Microsoft Azure Web Pubsub Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Microsoft Azure Web Pubsub Scopes

2 scopes · implicit

2 scopes

SCOPES

Agentic Access 1

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

Microsoft Azure Web Pubsub Agentic Access

19 operations · 15 acting · 1 human-in-the-loop

19 operations · 15 acting

AGENTIC

Resources

Get Started 4

Portal, sign-up, and the first successful call

Portal

Portal

GettingStarted

GettingStarted

Signup

Signup

Login

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgentSkill

WellKnown

LLMsTxt

AgenticAccess

Design & Contract 21

Pagination, idempotency, versioning, errors, and events

Spectral

Spectral

JSONLD

Vocabulary

DataModel

Conventions

Lifecycle

ErrorCatalog

Conformance

Arazzo

Arazzo

Arazzo

Arazzo

Arazzo

Arazzo

Arazzo

Arazzo

Arazzo

Arazzo

Arazzo

Arazzo

Scroll for all 21

Build 12

SDKs, sample code, and the tooling you integrate with

CLI

Packages

PostmanWorkspace

SDKs

SDK - JavaScript

SDK - Python

SDK - .NET

SDK - Java

SDK - Go

CLI Tools

GitHubOrganization

GitHubOrganization

GitHub Samples

GitHub Samples

Scroll for all 12

Access & Security 6

Authentication, authorization, and security posture

SecurityTxt

Security

OAuthScopes

DomainSecurity

Authentication

Authentication

Operate 9

Status, limits, changes, and where to get help

RateLimits

ChangeLog

StatusPage

Support

ChangeLog

StackOverflow

Community

FAQ

RateLimits

Scroll for all 9

Commercial 6

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Pricing

Pricing

ServiceLevelAgreement

ServiceLevelAgreement

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

name: Azure Web PubSub
description: Azure Web PubSub is a fully-managed service that enables building real-time, two-way messaging applications using
  publish-subscribe patterns over WebSockets. It supports broadcasting messages to clients in groups, sending messages to
  specific connections or users, and integrating with serverless event handlers for scalable real-time experiences.
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: high
  source:
  - plans
  - authentication
  - rate-limits
  - security
  generated: '2026-11-06'
  method: derived
image: https://azure.microsoft.com/svghandler/web-pubsub/
tags:
- Messaging
- Pub/Sub
- Real-Time
- Serverless
- WebSocket
tags_raw:
- Messaging
- Pub-Sub
- Real-Time
- Serverless
- WebSockets
created: '2026-03-13'
modified: '2026-11-05'
url: https://azure.microsoft.com/en-us/services/web-pubsub/
specificationVersion: '0.23'
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
common:
- type: AgentSkill
  url: skills/_index.yml
- type: SecurityTxt
  url: well-known/microsoft-azure-web-pubsub-www-security.txt
- type: WellKnown
  url: well-known/microsoft-azure-web-pubsub-well-known.yml
- type: RateLimits
  url: rate-limits/microsoft-azure-web-pubsub-rate-limits.yml
- type: Spectral
  url: rules/microsoft-azure-web-pubsub-rules.yml
- type: Spectral
  url: rules/microsoft-azure-web-pubsub-asyncapi-spectral-rules.yml
- type: JSONLD
  url: json-ld/microsoft-azure-web-pubsub-context.jsonld
- type: Vocabulary
  url: vocabulary/microsoft-azure-web-pubsub-vocabulary.yml
- type: DataModel
  url: data-model/microsoft-azure-web-pubsub-data-model.yml
- type: CLI
  url: cli/microsoft-azure-web-pubsub-cli.yml
- type: ChangeLog
  url: changelog/microsoft-azure-web-pubsub-changelog.yml
- type: Conventions
  url: conventions/microsoft-azure-web-pubsub-conventions.yml
- type: Lifecycle
  url: lifecycle/microsoft-azure-web-pubsub-lifecycle.yml
- type: ErrorCatalog
  url: errors/microsoft-azure-web-pubsub-problem-types.yml
- type: Conformance
  url: conformance/microsoft-azure-web-pubsub-conformance.yml
- type: LLMsTxt
  url: llms/microsoft-azure-web-pubsub-llms.txt
- type: Hosts
  url: hosts/microsoft-azure-web-pubsub-hosts.yml
- type: Vendors
  url: vendors/microsoft-azure-web-pubsub-vendors.yml
- type: Packages
  url: packages/microsoft-azure-web-pubsub-packages.yml
- type: Security
  url: https://www.microsoft.com/security
- type: OAuthScopes
  url: scopes/microsoft-azure-web-pubsub-scopes.yml
- type: Plans
  url: plans/microsoft-azure-web-pubsub-plans-pricing.yml
- type: FinOps
  url: finops/microsoft-azure-web-pubsub-finops.yml
- type: PostmanWorkspace
  url: https://www.postman.com/kinlaneapi/azure-web-pubsub/overview
- type: AgenticAccess
  url: agentic-access/microsoft-azure-web-pubsub-agentic-access.yml
- type: DomainSecurity
  url: security/microsoft-azure-web-pubsub-domain-security.yml
- type: Authentication
  url: authentication/microsoft-azure-web-pubsub-authentication.yml
- type: Arazzo
  url: arazzo/microsoft-azure-web-pubsub-check-then-close-connection-workflow.yml
  name: Azure Web PubSub Check then Close Connection
- type: Arazzo
  url: arazzo/microsoft-azure-web-pubsub-direct-connection-message-workflow.yml
  name: Azure Web PubSub Direct Connection Message
- type: Arazzo
  url: arazzo/microsoft-azure-web-pubsub-grant-permission-and-send-to-user-workflow.yml
  name: Azure Web PubSub Grant Permission then Send to User
- type: Arazzo
  url: arazzo/microsoft-azure-web-pubsub-grant-permission-if-missing-workflow.yml
  name: Azure Web PubSub Grant Permission if Missing
- type: Arazzo
  url: arazzo/microsoft-azure-web-pubsub-group-broadcast-if-active-workflow.yml
  name: Azure Web PubSub Broadcast to Group if Active
- type: Arazzo
  url: arazzo/microsoft-azure-web-pubsub-group-warn-and-teardown-workflow.yml
  name: Azure Web PubSub Warn Group and Tear Down
- type: Arazzo
  url: arazzo/microsoft-azure-web-pubsub-join-group-and-send-workflow.yml
  name: Azure Web PubSub Join Group, Send, then Leave
- type: Arazzo
  url: arazzo/microsoft-azure-web-pubsub-notify-user-if-online-workflow.yml
  name: Azure Web PubSub Notify User if Online
- type: Arazzo
  url: arazzo/microsoft-azure-web-pubsub-provision-client-and-join-group-workflow.yml
  name: Azure Web PubSub Provision Client and Join Group
- type: Arazzo
  url: arazzo/microsoft-azure-web-pubsub-revoke-permission-and-evict-workflow.yml
  name: Azure Web PubSub Revoke Permission and Evict Connection
- type: Arazzo
  url: arazzo/microsoft-azure-web-pubsub-token-then-broadcast-workflow.yml
  name: Azure Web PubSub Generate Token then Broadcast
- type: Arazzo
  url: arazzo/microsoft-azure-web-pubsub-user-onboard-to-group-workflow.yml
  name: Azure Web PubSub Onboard User to Group
- type: Portal
  url: https://portal.azure.com/
- type: Website
  url: https://azure.microsoft.com/en-us/products/web-pubsub
- type: Documentation
  url: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/
- type: GettingStarted
  url: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/quickstart-serverless
- type: Authentication
  url: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/howto-generate-client-access-url
- type: Pricing
  url: https://azure.microsoft.com/en-us/pricing/details/web-pubsub/
- type: ServiceLevelAgreement
  url: https://azure.microsoft.com/en-us/support/legal/sla/web-pubsub/
- type: StatusPage
  url: https://status.azure.com/
- type: Blog
  url: https://devblogs.microsoft.com/azure-sdk/
- type: Support
  url: https://azure.microsoft.com/en-us/support/options/
- type: TermsOfService
  url: https://azure.microsoft.com/en-us/support/legal/
- type: PrivacyPolicy
  url: https://privacy.microsoft.com/en-us/privacystatement
- type: Signup
  url: https://azure.microsoft.com/en-us/free
- type: Login
  url: https://portal.azure.com
- type: SDKs
  url: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/reference-server-sdk-js
- type: SDK - JavaScript
  url: https://www.npmjs.com/package/@azure/web-pubsub
- type: SDK - Python
  url: https://pypi.org/project/azure-messaging-webpubsubservice/
- type: SDK - .NET
  url: https://www.nuget.org/packages/Azure.Messaging.WebPubSub
- type: SDK - Java
  url: https://learn.microsoft.com/en-us/java/api/overview/azure/messaging-webpubsub-readme
- type: SDK - Go
  url: https://pkg.go.dev/github.com/Azure/azure-sdk-for-go/sdk/messaging/azwebpubsub
- type: CLI Tools
  url: https://learn.microsoft.com/en-us/cli/azure/webpubsub
- type: ChangeLog
  url: https://azure.microsoft.com/en-us/updates/?product=web-pubsub
- type: GitHubOrganization
  url: https://github.com/Azure
- type: GitHub Samples
  url: https://github.com/Azure/azure-webpubsub
- type: StackOverflow
  url: https://stackoverflow.com/questions/tagged/azure-webpubsub
- type: Community
  url: https://learn.microsoft.com/en-us/answers/tags/371/azure-web-pubsub
- type: FAQ
  url: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/resource-faq
- type: RateLimits
  url: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/concept-billing-model
- type: APIReference
  url: https://learn.microsoft.com/en-us/rest/api/webpubsub/
apis:
- name: Azure Web PubSub Client and Upstream Events
  description: AsyncAPI 2.6 description of the Azure Web PubSub client WebSocket subprotocols (json.webpubsub.azure.v1 and
    json.reliable.webpubsub.azure.v1) and the CloudEvents 1.0 HTTP upstream contract used by the service to deliver client
    events (connect, connected, disconnected, message, user custom events) to a configured backend webhook.
  image: https://azure.microsoft.com/svghandler/web-pubsub/
  humanURL: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/reference-json-webpubsub-subprotocol
  baseURL: wss://{instance}.webpubsub.azure.com
  tags:
  - AsyncAPI
  - CloudEvents
  - Event-Driven
  - Pub/Sub
  - WebSocket
  tags_raw:
  - AsyncAPI
  - CloudEvents
  - Event-Driven
  - Pub-Sub
  - WebSockets
  properties:
  - type: AsyncAPI
    url: asyncapi/microsoft-azure-web-pubsub-asyncapi.yml
  - type: Documentation
    url: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/reference-json-webpubsub-subprotocol
  - type: Reference
    url: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/reference-json-reliable-webpubsub-subprotocol
  - type: Reference
    url: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/reference-cloud-events
  - type: Authentication
    url: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/howto-generate-client-access-url
  aid: microsoft-azure-web-pubsub:azure-web-pubsub-client-and-upstream-events
- aid: microsoft-azure-web-pubsub:microsoft-azure-web-pubsub-hub-api
  name: Azure Web PubSub Hub API
  description: Send messages and manage connections, groups, and users in a hub
  humanURL: https://learn.microsoft.com/en-us/rest/api/webpubsub/
  baseURL: https://{instance}.webpubsub.azure.com
  tags:
  - Hub
  properties:
  - type: OpenAPI
    url: openapi/microsoft-azure-web-pubsub-hub-api-openapi.yml
  - type: Authentication
    url: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/howto-generate-client-access-url
  - type: Documentation
    url: https://learn.microsoft.com/en-us/rest/api/webpubsub
  - type: Authentication
    url: https://learn.microsoft.com/en-us/azure/active-directory/develop/authentication-scenarios
- aid: microsoft-azure-web-pubsub:microsoft-azure-web-pubsub-permission-api
  name: Azure Web PubSub Permission API
  description: Permission management for client connections
  humanURL: https://learn.microsoft.com/en-us/rest/api/webpubsub/
  baseURL: https://{instance}.webpubsub.azure.com
  tags:
  - Permission
  properties:
  - type: OpenAPI
    url: openapi/microsoft-azure-web-pubsub-permission-api-openapi.yml
  - type: Authentication
    url: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/howto-generate-client-access-url
  - type: Documentation
    url: https://learn.microsoft.com/en-us/rest/api/webpubsub
  - type: Authentication
    url: https://learn.microsoft.com/en-us/azure/active-directory/develop/authentication-scenarios
- aid: microsoft-azure-web-pubsub:microsoft-azure-web-pubsub-general-api
  name: Azure Web PubSub General API
  description: The general API from Azure Web PubSub — 1 operation(s) for general.
  humanURL: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/reference-json-webpubsub-subprotocol
  baseURL: wss://{instance}.webpubsub.azure.com
  tags: []
  tags_raw:
  - general
  properties:
  - type: OpenAPI
    url: openapi/microsoft-azure-web-pubsub-general-api-openapi.yml
  - type: Reference
    url: https://learn.microsoft.com/en-us/rest/api/webpubsub/controlplane/web-pub-sub
  - type: JSONSchema
    url: json-schema/microsoft-azure-web-pubsub-web-pub-sub-keys-schema.json
  - type: JSONSchema
    url: json-schema/microsoft-azure-web-pubsub-shared-private-link-resource-list-schema.json
  - type: JSONSchema
    url: json-schema/microsoft-azure-web-pubsub-private-endpoint-connection-list-schema.json
  - type: JSONSchema
    url: json-schema/microsoft-azure-web-pubsub-sku-list-schema.json
  - type: JSONSchema
    url: json-schema/microsoft-azure-web-pubsub-operation-list-schema.json
  - type: JSONSchema
    url: json-schema/microsoft-azure-web-pubsub-name-availability-parameters-schema.json
  - type: Documentation
    url: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/socketio-overview
  - type: GettingStarted
    url: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/socketio-quickstart
  - type: Authentication
    url: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/howto-generate-client-access-url
  - type: Documentation
    url: https://learn.microsoft.com/en-us/rest/api/webpubsub
  - type: Authentication
    url: https://learn.microsoft.com/en-us/azure/active-directory/develop/authentication-scenarios
  - type: JSONSchema
    url: json-schema/microsoft-azure-web-pubsub-remove-from-groups-request-schema.json
  - type: JSONSchema
    url: json-schema/microsoft-azure-web-pubsub-add-to-groups-request-schema.json
  - type: JSONSchema
    url: json-schema/microsoft-azure-web-pubsub-group-member-paged-values-schema.json
  - type: JSONSchema
    url: json-schema/microsoft-azure-web-pubsub-client-token-response-schema.json
- aid: microsoft-azure-web-pubsub:microsoft-azure-web-pubsub-webpubsub-api
  name: Azure Web PubSub Webpubsub API
  description: The webpubsub API from Azure Web PubSub — 46 operation(s) for webpubsub.
  humanURL: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/reference-json-webpubsub-subprotocol
  baseURL: https://management.azure.com
  tags:
  - Web PubSub
  tags_raw:
  - webpubsub
  properties:
  - type: OpenAPI
    url: openapi/microsoft-azure-web-pubsub-webpubsub-api-openapi.yml
  - type: Reference
    url: https://learn.microsoft.com/en-us/rest/api/webpubsub/controlplane/web-pub-sub
  - type: JSONSchema
    url: json-schema/microsoft-azure-web-pubsub-web-pub-sub-keys-schema.json
  - type: JSONSchema
    url: json-schema/microsoft-azure-web-pubsub-shared-private-link-resource-list-schema.json
  - type: JSONSchema
    url: json-schema/microsoft-azure-web-pubsub-private-endpoint-connection-list-schema.json
  - type: JSONSchema
    url: json-schema/microsoft-azure-web-pubsub-sku-list-schema.json
  - type: JSONSchema
    url: json-schema/microsoft-azure-web-pubsub-operation-list-schema.json
  - type: JSONSchema
    url: json-schema/microsoft-azure-web-pubsub-name-availability-parameters-schema.json
  - type: Documentation
    url: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/socketio-overview
  - type: GettingStarted
    url: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/socketio-quickstart
  - type: Authentication
    url: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/howto-generate-client-access-url
  - type: Documentation
    url: https://learn.microsoft.com/en-us/rest/api/webpubsub
  - type: Authentication
    url: https://learn.microsoft.com/en-us/azure/active-directory/develop/authentication-scenarios
  - type: JSONSchema
    url: json-schema/microsoft-azure-web-pubsub-remove-from-groups-request-schema.json
  - type: JSONSchema
    url: json-schema/microsoft-azure-web-pubsub-add-to-groups-request-schema.json
  - type: JSONSchema
    url: json-schema/microsoft-azure-web-pubsub-group-member-paged-values-schema.json
  - type: JSONSchema
    url: json-schema/microsoft-azure-web-pubsub-client-token-response-schema.json
- aid: microsoft-azure-web-pubsub:microsoft-azure-web-pubsub-client-token-api
  name: Azure Web PubSub Client Token API
  description: Generate JWT tokens for client connections
  humanURL: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/reference-json-webpubsub-subprotocol
  baseURL: wss://{instance}.webpubsub.azure.com
  tags:
  - Client Token
  properties:
  - type: OpenAPI
    url: openapi/microsoft-azure-web-pubsub-client-token-api-openapi.yml
  - type: Reference
    url: https://learn.microsoft.com/en-us/rest/api/webpubsub/controlplane/web-pub-sub
  - type: JSONSchema
    url: json-schema/microsoft-azure-web-pubsub-web-pub-sub-keys-schema.json
  - type: JSONSchema
    url: json-schema/microsoft-azure-web-pubsub-shared-private-link-resource-list-schema.json
  - type: JSONSchema
    url: json-schema/microsoft-azure-web-pubsub-private-endpoint-connection-list-schema.json
  - type: JSONSchema
    url: json-schema/microsoft-azure-web-pubsub-sku-list-schema.json
  - type: JSONSchema
    url: json-schema/microsoft-azure-web-pubsub-operation-list-schema.json
  - type: JSONSchema
    url: json-schema/microsoft-azure-web-pubsub-name-availability-parameters-schema.json
  - type: Documentation
    url: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/socketio-overview
  - type: GettingStarted
    url: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/socketio-quickstart
  - type: Authentication
    url: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/howto-generate-client-access-url
  - type: Documentation
    url: https://learn.microsoft.com/en-us/rest/api/webpubsub
  - type: Authentication
    url: https://learn.microsoft.com/en-us/azure/active-directory/develop/authentication-scenarios
  - type: JSONSchema
    url: json-schema/microsoft-azure-web-pubsub-remove-from-groups-request-schema.json
  - type: JSONSchema
    url: json-schema/microsoft-azure-web-pubsub-add-to-groups-request-schema.json
  - type: JSONSchema
    url: json-schema/microsoft-azure-web-pubsub-group-member-paged-values-schema.json
  - type: JSONSchema
    url: json-schema/microsoft-azure-web-pubsub-client-token-response-schema.json
x-parent: microsoft-azure
x-relationship: product
x-enrichment:
  date: '2026-11-05'
  status: enriched
  artifacts_added: 11
  pass: local-v6

Azure Web PubSub API — frequently asked questions

Does Azure Web PubSub have an API?

Yes. APIs.io lists 6 APIs from Azure Web PubSub, including Azure Web PubSub Client and Upstream Events, Azure Web PubSub Hub API and Azure Web PubSub Permission API, and 3 more.

Is there an OpenAPI specification for the Azure Web PubSub API?

Yes. APIs.io indexes 5 OpenAPI specifications for Azure Web PubSub, each linked for download from this page.

How do I authenticate with the Azure Web PubSub API?

Azure Web PubSub uses bearer-token authentication (http/oauth2 · 2 schemes). The details are profiled on APIs.io as Microsoft Azure Web Pubsub Authentication.

How much does the Azure Web PubSub API cost?

Azure Web PubSub publishes its prices; its Free plan is Free per unit per day as of 2026-10-28. APIs.io lists 3 pricing plans for Azure Web PubSub, with each plan's price, limits and inclusions under Pricing on this page.

Is the Azure Web PubSub API ready for AI agents?

Azure Web PubSub has a Kin Score of 66.6 out of 100 (exemplar) and an Agent Readiness score of 24.1 (agent-aware), scored by API Evangelist on 2026-11-06.

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