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Official agent skill

Azure Communication Callingserver Java

by microsoft in microsoft/skills

Azure Communication Services CallingServer (legacy) Java SDK.

OfficialMITAuto-check passedDevelopment

Install Azure Communication Callingserver Java

skills CLI
$ npx skills add microsoft/skills --skill azure-communication-callingserver-java -a claude-code

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

GitHub CLI
$ gh skill install microsoft/skills azure-communication-callingserver-java --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/microsoft/skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.github/plugins/azure-sdk-java/skills/azure-communication-callingserver-java .claude/skills/azure-communication-callingserver-java && 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-communication-callingserver-java
GitHub stars
3.1k
Used in
5 other repos
Token cost
~715 tokens
SKILL.md length
99 words
Files
2 (incl. references)
Skills in repo
150
Repo updated
First seen
Licence
MIT

At a glance

Azure Communication Services CallingServer (legacy) Java SDK.

  • Maintaining legacy code
  • SKILL.md covers Migration to Call Automation, Class Name Changes, Legacy Client Creation and Legacy Recording, plus 2 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • Tasks that involve Legacy modernization

What it does

Azure Communication Callingserver Java is an agent skill from microsoft/skills, published by the product's own GitHub organization. Azure Communication Services CallingServer (legacy) Java SDK. Note - This SDK is deprecated. Use azure-communication-callautomation instead for new projects. Only use this skill when maintaining legacy code.

Its SKILL.md is about 720 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/examples.md`).

It sits in Development, covering Legacy modernization. It works with Azure Communication Services and Java. The repository describes itself as: Skills, MCP servers, Custom Agents, Agents.md for SDKs to ground Coding Agents. The licence is MIT.

When your agent uses it

  • Maintaining legacy code
  • Tasks that involve Legacy modernization

Example prompts

  • “/azure-communication-callingserver-java”

What it can do on your machine

Read from SKILL.md and the folder at commit 354361d. 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 (its code samples are java and xml).

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

  • Network

    No URLs in SKILL.md.

    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.

Context cost

Azure Communication Callingserver Java loads about 715 tokens when it runs, and up to ~1.4k if it reads all its reference files. Until then it costs about 62 tokens; SKILL.md has 99 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~62
When it runs · the whole SKILL.md, loaded when a task matches
~715
With references · SKILL.md plus every file in references/, read only if the agent opens them
~1.4k

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 microsoft/skills at commit 354361d, republished under its MIT licence (© microsoft). 99 words, ~715 tokens.

Download SKILL.mdSave it as .claude/skills/azure-communication-callingserver-java/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
azure-communication-callingserver-java
description
Azure Communication Services CallingServer (legacy) Java SDK. Note - This SDK is deprecated. Use azure-communication-callautomation instead for new projects. Only use this skill when maintaining legacy code.
license
MIT
metadata.author
Microsoft
metadata.version
1.0.0
metadata.package
com.azure:azure-communication-callingserver

Azure Communication CallingServer (Java) - DEPRECATED

⚠️ DEPRECATED: This SDK has been renamed to Call Automation. For new projects, use azure-communication-callautomation instead. This skill is for maintaining legacy code only.

Migration to Call Automation

xml
<!-- OLD (deprecated) -->
<dependency>
    <groupId>com.azure</groupId>
    <artifactId>azure-communication-callingserver</artifactId>
    <version>1.0.0-beta.5</version>
</dependency>

<!-- NEW (use this instead) -->
<dependency>
    <groupId>com.azure</groupId>
    <artifactId>azure-communication-callautomation</artifactId>
    <version>1.6.0</version>
</dependency>

Class Name Changes

CallingServer (Old)Call Automation (New)
CallingServerClientCallAutomationClient
CallingServerClientBuilderCallAutomationClientBuilder
CallConnectionCallConnection (same)
ServerCallRemoved - use CallConnection

Legacy Client Creation

java
// OLD WAY (deprecated)
import com.azure.communication.callingserver.CallingServerClient;
import com.azure.communication.callingserver.CallingServerClientBuilder;

CallingServerClient client = new CallingServerClientBuilder()
    .connectionString("<connection-string>")
    .buildClient();

// NEW WAY
import com.azure.communication.callautomation.CallAutomationClient;
import com.azure.communication.callautomation.CallAutomationClientBuilder;

CallAutomationClient client = new CallAutomationClientBuilder()
    .connectionString("<connection-string>")
    .buildClient();

Legacy Recording

java
// OLD WAY
StartRecordingOptions options = new StartRecordingOptions(serverCallId)
    .setRecordingStateCallbackUri(callbackUri);

StartCallRecordingResult result = client.startRecording(options);
String recordingId = result.getRecordingId();

client.pauseRecording(recordingId);
client.resumeRecording(recordingId);
client.stopRecording(recordingId);

// NEW WAY - see azure-communication-callautomation skill

For New Development

Do not use this SDK for new projects.

See the azure-communication-callautomation-java skill for:

  • Making outbound calls
  • Answering incoming calls
  • Call recording
  • DTMF recognition
  • Text-to-speech / speech-to-text
  • Adding/removing participants
  • Call transfer

Trigger Phrases

  • "callingserver legacy", "deprecated calling SDK"
  • "migrate callingserver to callautomation"

© microsoft, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 1 other file (references) in .github/plugins/azure-sdk-java/skills/azure-communication-callingserver-java of microsoft/skills.

  • SKILL.md
  • references/examples.md

Open the folder on GitHubat commit 354361d

Used in 5 other repositories

We found 14 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 5 other GitHub owners. This page covers the copy in microsoft/skills, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Azure Communication Callingserver Java 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 Communication Callingserver Java compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Azure Communication Callingserver Java this skillmicrosoft/skills3.1k5 repos~715Automated safety check: PassMIT
To Java MigrationOpenHands/extensions157—~518Automated safety check: PassMIT
Cobol ModernizationOpenHands/extensions157—~820Automated safety check: PassMIT
Modernization Flowgriddynamics/rosetta353—~1.7kAutomated safety check: PassApache-2.0
Approval Testing Toolkitlexler/skill-factory239—~1.2kAutomated safety check: PassApache-2.0
Azure Upgrademicrosoft/GitHub-Copilot-for-Azure2551 repos~1.5kAutomated safety check: PassMIT

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Works with

Categories

Questions about Azure Communication Callingserver Java

What does Azure Communication Callingserver Java do?

Azure Communication Services CallingServer (legacy) Java SDK. Azure Communication Callingserver Java is an agent skill from microsoft/skills, published by the product's own GitHub organization. Azure Communication Services CallingServer (legacy) Java SDK.

When should I use Azure Communication Callingserver Java?

Azure Communication Callingserver Java fits situations like: maintaining legacy code; tasks that involve Legacy modernization.

How do I install Azure Communication Callingserver Java in Claude Code?

Run `npx skills add microsoft/skills --skill azure-communication-callingserver-java -a claude-code`. Or copy the skill folder (.github/plugins/azure-sdk-java/skills/azure-communication-callingserver-java in microsoft/skills) into .claude/skills/azure-communication-callingserver-java in your project. Claude Code loads it when a task matches its description.

How do I install Azure Communication Callingserver Java in Codex?

Run `npx skills add microsoft/skills --skill azure-communication-callingserver-java -a codex`. Or copy the skill folder (.github/plugins/azure-sdk-java/skills/azure-communication-callingserver-java in microsoft/skills) into .agents/skills/azure-communication-callingserver-java in your project. Codex loads it when a task matches its description.

Can I use Azure Communication Callingserver Java 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 microsoft/skills --skill azure-communication-callingserver-java -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-communication-callingserver-java, .gemini/skills/azure-communication-callingserver-java, .github/skills/azure-communication-callingserver-java and .opencode/skills/azure-communication-callingserver-java in your project.

What does Azure Communication Callingserver Java need to run?

SKILL.md names no scripts, command-line tools or credentials: Azure Communication Callingserver Java is instructions for the agent only.

Does Azure Communication Callingserver Java access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Azure Communication Callingserver Java 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 Communication Callingserver Java use?

Azure Communication Callingserver Java is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Azure Communication Callingserver Java use?

About 715 tokens (SKILL.md is roughly 2.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 647 tokens, read only when the agent opens those files.

What are the alternatives to Azure Communication Callingserver Java?

Skills that share tags, products or a category with Azure Communication Callingserver Java: To Java Migration (OpenHands/extensions, 157 stars), Cobol Modernization (OpenHands/extensions, 157 stars), Modernization Flow (griddynamics/rosetta, 353 stars) and Approval Testing Toolkit (lexler/skill-factory, 239 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Azure Communication Callingserver Java?

microsoft (a GitHub organization, an official publisher) maintains it in microsoft/skills, which has 3,086 GitHub stars. The repository holds 150 skills in this directory. The repository was last updated on October 6, 2026.

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