Official agent skill

Azure Web Pubsub

by MicrosoftDocs in MicrosoftDocs/Agent-Skills

Expert knowledge for Azure Web PubSub development including troubleshooting, best practices, decision making, architecture & design patterns, limits & quotas, security, configuration, integrations &…

OfficialCC-BY-4.0Auto-check passedBackend & APIs

Install Azure Web Pubsub

skills CLI
$ npx skills add MicrosoftDocs/Agent-Skills --skill azure-web-pubsub -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install MicrosoftDocs/Agent-Skills azure-web-pubsub --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/MicrosoftDocs/Agent-Skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/azure-web-pubsub .claude/skills/azure-web-pubsub && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
azure-web-pubsub
GitHub stars
775
Token cost
~4.2k tokens
SKILL.md length
1,143 words
Files
1
Skills in repo
149
Repo updated
First seen
Licence
CC-BY-4.0

At a glance

Expert knowledge for Azure Web PubSub development including troubleshooting, best practices, decision making, architecture & design patterns, limits & quotas, security, configuration, integrations &…

  • Building WebSocket/MQTT apps
  • SKILL.md covers How to Use This Skill and Category Index
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • Using Socket.IO

What it does

Azure Web Pubsub is an agent skill from MicrosoftDocs/Agent-Skills, published by the product's own GitHub organization. Expert knowledge for Azure Web PubSub development including troubleshooting, best practices, decision making, architecture & design patterns, limits & quotas, security, configuration, integrations & coding patterns, and deployment. Use when building WebSocket/MQTT apps, using Socket.IO, configuring event routing, geo-replication, or chat workloads, and other Azure Web PubSub related development tasks. Not for Azure SignalR Service (use azure-signalr-service), Azure Event Hubs (use azure-event-hubs), Azure Service…

Its SKILL.md is about 4.2k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts. Compatibility notes: Requires network access. Uses mcpmicrosoftdocs:microsoftdocsfetch or fetchwebpage to retrieve documentation.

It sits in Backend & APIs, covering Realtime and WebSockets and Design patterns. It works with Azure Web PubSub, Azure Event Hubs, Azure Service Bus and Microsoft Azure. The repository describes itself as: Curated Agent Skills for Microsoft & Azure – giving AI coding assistants structured, real-time expertise from Microsoft Learn docs. The licence is CC-BY-4.0.

When your agent uses it

  • Building WebSocket/MQTT apps
  • Using Socket.IO
  • Configuring event routing
  • Geo-replication

Example prompts

  • “/azure-web-pubsub”

Requirements

  • Compatibility (from SKILL.md): Requires network access. Uses mcp_microsoftdocs:microsoft_docs_fetch or fetch_webpage to retrieve documentation.

What it can do on your machine

Read from SKILL.md and the folder at commit ba74e8f. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Links to these hosts (documentation or services it may open):

    • learn.microsoft.com
    • github.com

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

  • Compatibility

    Requires network access. Uses mcp_microsoftdocs:microsoft_docs_fetch or fetch_webpage to retrieve documentation.

    From compatibility in the SKILL.md frontmatter.

Context cost

Azure Web Pubsub loads about 4.2k tokens when it runs. Until then it costs about 141 tokens; SKILL.md has 1,143 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~141
When it runs · the whole SKILL.md, loaded when a task matches
~4.2k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from MicrosoftDocs/Agent-Skills at commit ba74e8f, republished under its CC-BY-4.0 licence (© MicrosoftDocs). 1,143 words, ~4,171 tokens.

Download SKILL.mdSave it as .claude/skills/azure-web-pubsub/SKILL.md (or your agent's skills folder).
name
azure-web-pubsub
description
Expert knowledge for Azure Web PubSub development including troubleshooting, best practices, decision making, architecture & design patterns, limits & quotas, security, configuration, integrations & coding patterns, and deployment. Use when building WebSocket/MQTT apps, using Socket.IO, configuring event routing, geo-replication, or chat workloads, and other Azure Web PubSub related development tasks. Not for Azure SignalR Service (use azure-signalr-service), Azure Event Hubs (use azure-event-hubs), Azure Service Bus (use azure-service-bus).
compatibility
Requires network access. Uses mcp_microsoftdocs:microsoft_docs_fetch or fetch_webpage to retrieve documentation.
metadata.generated_at
2026-09-27
metadata.generator
docs2skills/1.0.0

Azure Web PubSub Skill

This skill provides expert guidance for Azure Web PubSub. Covers troubleshooting, best practices, decision making, architecture & design patterns, limits & quotas, security, configuration, integrations & coding patterns, and deployment. It combines local quick-reference content with remote documentation fetching capabilities.

How to Use This Skill

IMPORTANT for Agent: Use the Category Index below to locate relevant sections. For categories with line ranges (e.g., L35-L120), use read_file with the specified lines. For categories with file links (e.g., [security.md](security.md)), use read_file on the linked reference file

IMPORTANT for Agent: If metadata.generated_at is more than 3 months old, suggest the user pull the latest version from the repository. If mcp_microsoftdocs tools are not available, suggest the user install it: Installation Guide

This skill requires network access to fetch documentation content:

  • Preferred: Use mcp_microsoftdocs:microsoft_docs_fetch with query string from=learn-agent-skill. Returns Markdown.
  • Fallback: Use fetch_webpage with query string from=learn-agent-skill&accept=text/markdown. Returns Markdown.

Category Index

CategoryLinesDescription
TroubleshootingL37-L47Diagnosing and fixing Web PubSub errors, event handler/debug issues, service and Socket.IO problems, using resource/diagnostic logs and error codes for troubleshooting.
Best PracticesL48-L52Guidance on building resilient WebSocket clients for Azure Web PubSub, including reconnection strategies, handling disconnects, error handling, and connection lifecycle best practices.
Decision MakingL53-L59Guidance on choosing chat SDK vs REST, selecting Web PubSub features for your scenario, and understanding pricing, billing units, and cost implications.
Architecture & Design PatternsL60-L66Architectural patterns for Web PubSub: multi-region resiliency, bridging MQTT with WebSocket/Web PubSub, and understanding Socket.IO support internals for integration design.
Limits & QuotasL67-L72Capacity and performance limits for Web PubSub (connections, messages, scaling) and which Socket.IO server APIs aren’t supported or behave differently.
SecurityL73-L101Securing Azure Web PubSub: authN/Z for clients and apps (keys, Entra ID, identities, roles), mTLS, network/private endpoints, firewalls, outbound restrictions, and compliance via Azure Policy.
ConfigurationL102-L117Configuring Web PubSub runtime: storage/chat setup, metrics/logs and alerts, monitoring, custom domains, event routing, geo-replication, local tunneling, MQTT/Socket.IO options, and admin UI.
Integrations & Coding PatternsL118-L150Client and server integration patterns for Azure Web PubSub: SDK/REST usage, WebSocket/MQTT, JSON/protobuf subprotocols, auth, events (HTTP/AMQP/Functions), and Socket.IO integration.
DeploymentL151-L156Guides for moving Web PubSub across regions, configuring Premium autoscale, and deploying/migrating Socket.IO apps and serverless chat to Azure Web PubSub.
Troubleshooting
Best Practices
TopicURL
Design reliable WebSocket clients for Azure Web PubSubhttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/howto-develop-reliable-clients
Decision Making
Architecture & Design Patterns
Limits & Quotas
Security
TopicURL
Authenticate and issue tokens for Azure Web PubSub chat clientshttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/chat-howto-authenticate
Configure roles and permissions for Azure Web PubSub chathttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/chat-howto-roles-permissions
Authorize Web PubSub access with Microsoft Entra IDhttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/concept-azure-ad-authorization
Configure wildcard group role permissions in Azure Web PubSubhttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/concept-wildcard-group-roles
Authorize Azure Web PubSub with Entra applicationshttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/howto-authorize-from-application
Authorize Azure Web PubSub using managed identitieshttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/howto-authorize-from-managed-identity
Enable client certificate (mTLS) for Web PubSubhttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/howto-client-certificate
Configure Azure Web PubSub Application Firewall for client controlhttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/howto-configure-application-firewall
Disable key-based auth for Azure Web PubSubhttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/howto-disable-local-auth
Secure Web PubSub with Azure Application Gatewayhttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/howto-integrate-app-gateway
Audit Azure Web PubSub compliance with Azure Policyhttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/howto-monitor-azure-policy
Manage Azure Web PubSub network access control ruleshttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/howto-secure-network-access-control
Secure Azure Web PubSub with private endpointshttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/howto-secure-private-endpoints
Rotate Azure Web PubSub access keys safelyhttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/howto-secure-rotate-access-key
Secure Web PubSub outbound traffic to Azure Functions via shared private endpointshttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/howto-secure-shared-private-endpoints
Access Key Vault privately from Azure Web PubSub via shared endpointshttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/howto-secure-shared-private-endpoints-key-vault
Secure Web PubSub outbound traffic to Private Link Servicehttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/howto-secure-shared-private-endpoints-private-link-service
Use Azure Web PubSub service tags for network access controlhttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/howto-service-tags
Authenticate Web PubSub clients with Azure Identityhttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/howto-use-azure-identity
Use managed identities with Azure Web PubSubhttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/howto-use-managed-identity
Apply built-in Azure Policy definitions to Web PubSubhttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/policy-definitions
Build serverless Web PubSub chat with client authenticationhttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/quickstart-serverless
Authenticate with Web PubSub for Socket.IOhttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/socketio-authentication
Add authentication and permissions to Azure Web PubSub appshttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/tutorial-permission
Authenticate and authorize MQTT clients for Azure Web PubSubhttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/tutorial-upstream-auth-mqtt-client
Show full SKILL.md (392 more words)Show less
Configuration
TopicURL
Configure storage and enable Azure Web PubSub Chathttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/chat-howto-enable-chat
Use metrics and alerts for Azure Web PubSubhttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/concept-metrics
Configure monitoring for Azure Web PubSub with Azure Monitorhttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/howto-azure-monitor
Configure custom domains for Azure Web PubSubhttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/howto-custom-domain
Configure Azure Web PubSub event handlers and routinghttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/howto-develop-eventhandler
Enable geo-replication for Azure Web PubSubhttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/howto-enable-geo-replication
Reference for Azure Web PubSub monitoring metrics and logshttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/howto-monitor-data-reference
Use Azure Web PubSub local tunnel for developmenthttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/howto-web-pubsub-tunnel-tool
CloudEvents extensions for Web PubSub MQTT handlershttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/reference-mqtt-cloud-events
Write OData filter expressions for Web PubSubhttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/reference-odata-filter
Configure Azure Web PubSub Socket.IO serverless protocolhttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/socket-io-serverless-protocol
Use Azure Socket.IO Admin UI for monitoringhttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/socketio-troubleshoot-admin-ui
Integrations & Coding Patterns
TopicURL
Manage Azure Web PubSub chat rooms via SDK and RESThttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/chat-howto-manage-rooms
Send and manage messages in Azure Web PubSub chathttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/chat-howto-messages
Connect MQTT and WebSocket clients to Azure Web PubSubhttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/howto-connect-mqtt-websocket-client
Configure Azure Web PubSub client events to Event Hubshttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/howto-develop-event-listener
Generate Azure Web PubSub client access URLshttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/howto-generate-client-access-url
Implement upstream servers for Azure Web PubSub eventshttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/howto-web-pubsub-write-upstream-server
Create WebSocket clientshttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/howto-websocket-connect
Use C# client SDK for Azure Web PubSubhttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/reference-client-sdk-csharp
Use Java client SDK for Azure Web PubSubhttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/reference-client-sdk-java
Use JavaScript client SDK for Azure Web PubSubhttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/reference-client-sdk-javascript
Use Python client SDK for Azure Web PubSubhttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/reference-client-sdk-python
Follow Azure Web PubSub client specificationhttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/reference-client-specification
Handle Web PubSub events via HTTP CloudEventshttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/reference-cloud-events
Handle Web PubSub events via AMQP CloudEventshttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/reference-cloud-events-amqp
Use Web PubSub triggers and bindings in Azure Functionshttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/reference-functions-bindings
Implement reliable JSON WebSocket subprotocol for Web PubSubhttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/reference-json-reliable-webpubsub-subprotocol
Use Azure Web PubSub JSON WebSocket subprotocolhttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/reference-json-webpubsub-subprotocol
Implement reliable protobuf WebSocket subprotocol for Web PubSubhttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/reference-protobuf-reliable-webpubsub-subprotocol
Use Azure Web PubSub protobuf WebSocket subprotocolhttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/reference-protobuf-webpubsub-subprotocol
Use Azure Web PubSub data plane REST APIshttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/reference-rest-api-data-plane
REST API semantics for MQTT in Azure Web PubSubhttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/reference-rest-api-mqtt
Use .NET server SDK for Azure Web PubSubhttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/reference-server-sdk-csharp
Use Java server SDK for Azure Web PubSubhttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/reference-server-sdk-java
Use JavaScript server SDK for Azure Web PubSubhttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/reference-server-sdk-js
Use Python server SDK for Azure Web PubSubhttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/reference-server-sdk-python
Authenticate and connect to Azure Web PubSubhttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/samples-authenticate-and-connect
Integrate Web PubSub for Socket.IO with API Managementhttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/socket-io-howto-integrate-apim
Use Socket.IO Azure Functions triggers and bindingshttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/socket-io-serverless-function-binding
Integrate Web PubSub for Socket.IO into existing appshttps://learn.microsoft.com/en-us/azure/azure-web-pubsub/socketio-quickstart
Deployment

© MicrosoftDocs, CC-BY-4.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in skills/azure-web-pubsub of MicrosoftDocs/Agent-Skills.

Open the folder on GitHubat commit ba74e8f

Compare with similar skills

Azure Web Pubsub next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Azure Web Pubsub compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Azure Web Pubsub this skillMicrosoftDocs/Agent-Skills775—~4.2kAutomated safety check: PassCC-BY-4.0
Azure Messaging Webpubsub Javamicrosoft/skills3.1k6 repos~2.4kAutomated safety check: PassMIT
Azure Messaging Webpubsubservice Pymicrosoft/skills3.1k6 repos~2kAutomated safety check: PassMIT
Kui Frameworkabersheeran/kui297—~4.4kAutomated safety check: PassApache-2.0
Azure Event Hubs Python SDK Guidemicrosoft/skills3.1k1 repos~2.3kAutomated safety check: PassMIT
Azure Service Bus for Pythonmicrosoft/skills3.1k—~2.6kAutomated safety check: PassMIT

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Questions about Azure Web Pubsub

What does Azure Web Pubsub do?

Expert knowledge for Azure Web PubSub development including troubleshooting, best practices, decision making, architecture & design patterns, limits & quotas, security, configuration, integrations &…. Azure Web Pubsub is an agent skill from MicrosoftDocs/Agent-Skills, published by the product's own GitHub organization. Expert knowledge for Azure Web PubSub development including troubleshooting, best practices, decision making, architecture & design patterns, limits & quotas, security, configuration, integrations & coding patterns, and deployment.

When should I use Azure Web Pubsub?

Azure Web Pubsub fits situations like: building WebSocket/MQTT apps; using Socket.IO; configuring event routing; geo-replication.

How do I install Azure Web Pubsub in Claude Code?

Run `npx skills add MicrosoftDocs/Agent-Skills --skill azure-web-pubsub -a claude-code`. Or copy the skill folder (skills/azure-web-pubsub in MicrosoftDocs/Agent-Skills) into .claude/skills/azure-web-pubsub in your project. Claude Code loads it when a task matches its description.

How do I install Azure Web Pubsub in Codex?

Run `npx skills add MicrosoftDocs/Agent-Skills --skill azure-web-pubsub -a codex`. Or copy the skill folder (skills/azure-web-pubsub in MicrosoftDocs/Agent-Skills) into .agents/skills/azure-web-pubsub in your project. Codex loads it when a task matches its description.

Can I use Azure Web Pubsub in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add MicrosoftDocs/Agent-Skills --skill azure-web-pubsub -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/azure-web-pubsub, .gemini/skills/azure-web-pubsub, .github/skills/azure-web-pubsub and .opencode/skills/azure-web-pubsub in your project.

What does Azure Web Pubsub need to run?

SKILL.md names no scripts, command-line tools or credentials: Azure Web Pubsub is instructions for the agent only. Compatibility (from SKILL.md): Requires network access. Uses mcp_microsoftdocs:microsoft_docs_fetch or fetch_webpage to retrieve documentation..

Does Azure Web Pubsub access the network?

SKILL.md names 2 domains. As links in the text: learn.microsoft.com and github.com. This is read from the text; nothing was executed.

Is Azure Web Pubsub safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Azure Web Pubsub use?

Azure Web Pubsub is published under the CC-BY-4.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Azure Web Pubsub use?

About 4.2k tokens (SKILL.md is roughly 17k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Azure Web Pubsub?

Skills that share tags, products or a category with Azure Web Pubsub: Azure Messaging Webpubsub Java (microsoft/skills, 3.1k stars), Azure Messaging Webpubsubservice Py (microsoft/skills, 3.1k stars), Kui Framework (abersheeran/kui, 297 stars) and Azure Event Hubs Python SDK Guide (microsoft/skills, 3.1k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Azure Web Pubsub?

MicrosoftDocs (a GitHub organization, an official publisher) maintains it in MicrosoftDocs/Agent-Skills, which has 775 GitHub stars. The repository holds 149 skills in this directory. The repository was last updated on October 5, 2026.

Source: MicrosoftDocs/Agent-Skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.