mcp@4.0.0-beta.7

VERIFIED· startup only

Publisher claims: "Azure MCP Server - Model Context Protocol implementation for Azure" Observed in sandbox: calls registry.npmjs.org only, touches nothing outside the project, writes no memory.

Registry npm (MCP server) · listed in the official MCP RegistryPublisher azure · publishing for 577 daysInstalls 703KLast detonated 3d ago
$claude mcp add mcp -- npx -y @azure/mcp
WatchReport an issue

Coverage

Startup only; authenticated tool behavior not tested.
Tested
install scripts, with decoy credentials in place · second launch with the clock 45 days ahead · server startup over stdio (initialize sent) · every file read, file written and host contacted by what ran
Not tested
the tool list (the server exited before answering) · what the tools do when called with real credentials

What this means for the label: Verified here covers what ran. The server's tools were not exercised with a real credential, so nothing about their behavior is asserted; the credential summary below says what to do with that.

Before you give it your token

It will ask for
no credential variables read in the code
Where it talks to
no vendor host named in the codeAlso aka.ms — not the publisher's domain; check what for before connecting.
What the honeypot saw
no credential files read · reached only registry.npmjs.org
What we could not test
the tool list (the server exited before answering) · what the tools do when called with real credentials

Connect it under the guard. Startup only; authenticated tool behavior not tested. The code names no credential variable; the guard pins the network to what the honeypot saw and logs every call.

$vet-skills run --net declared -- npx -y @azure/mcp

Never paste a credential into a chat, a ticket or a report, including ours. How the guard holds it.

Is [email protected] safe to install?

KillerSkills ran it in the KillerSkills honeypot sandbox (3 scenarios; startup only; authenticated tool behavior not tested) on 2026-11-11 and scored it 86/100 (Verified). In what ran, nothing we could detect went wrong: no undeclared network egress, no credential reads, no persistent instruction writes. What it does with a real credential was not observed; the static findings and the publisher carry the rest of the score. Summary: calls registry.npmjs.org only, touches nothing outside the project, writes no memory.

Behavior trace

Honeypot run · 20 s · 3 scenarios
t+CategoryObserved action
0.1sprocessexited 1: Missing required package: '@azure/mcp-linux-x64'. Follow the troubleshooting steps - https://aka.ms/azmcp/troubleshooting#platform-package-installation-issues
20sfilesystemwrote ~/.net/azmcp/163/libMicrosoft.CognitiveServices.Speech.core.so · ~/.net/azmcp/163/libMicrosoft.CognitiveServices.Speech.extension.audio.sys.so · ~/.net/azmcp/163/libMicrosoft.CognitiveServices.Speech.extension.codec.so · ~/.net/azmcp/163/libMicrosoft.CognitiveServices.Speech.extension.kws.ort.so · ~/.net/azmcp/163/libMicrosoft.CognitiveServices.Speech.extension.kws.so · ~/.net/azmcp/163/libpal_azure_c_shared.so
20snetworkCONNECT tcp://registry.npmjs.org:443
20sprocessexec /usr/local/bin/npm
20sprocessexec /tmp/ks-detonate-h0YL1f/task/home/work/acme-api/.claude/skills/mcp/.platform/node_modules/@azure/mcp-linux-x64/dist/azmcp
20sclaimedstartup only: exited (0) before answering · at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[[Azure.Mcp.Server.Program+<Main>d__2, azmcp, Version=4.0.0.0, Culture=neutral, PublicKeyToken=null]](<Main>d__2 ByRef) at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1[[System.Int32, System.Private.CoreLib, Version=10.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].Start[[Azure.Mcp.Server.Program+<Main>d__2,
20sprocessscript backend runs setup only
20sprocesssecond launch, clock +45 days, CI unset
20sprocessexited 1: Missing required package: '@azure/mcp-linux-x64'. Follow the troubleshooting steps - https://aka.ms/azmcp/troubleshooting#platform-package-installation-issues

Static findings

LOW
Coercive compliance languageREADME.md:777 · Coercive compliance language · informational: not an instruction file…oft to collect data from users of your applications. If you use these features, you must comply with applicable law, including providing appropriate notices to users of your a…Fix: Remove the text that addresses the agent rather than the reader; describe behavior, do not instruct.
AST01
MEDIUM
npx invocation of non-well-known packageindex.js:280 · npx invocation of non-well-known package — may execute untrusted codeconsole.error(` npx -y ${packageName}@latest --version`)Fix: Pin versions and sources; vendor anything fetched at install time.
AST06
MEDIUM
npx invocation of non-well-known packageindex.js:278 · npx invocation of non-well-known package — may execute untrusted codeconsole.error(`\n3. If using npx, clear the npx cache and try again:`)Fix: Pin versions and sources; vendor anything fetched at install time.
AST06
MEDIUM
npx invocation of non-well-known packageindex.js:279 · npx invocation of non-well-known package — may execute untrusted codeconsole.error(` npx -y clear-npx-cache`)Fix: Pin versions and sources; vendor anything fetched at install time.
AST06

Cost to the agent

Instructions loaded
≈53 tok
1 file · 6 in bundle
Tool list per prompt
≈0 tok
0 tools · 0 per tool
Handshake
no reply
launch to tools/list, stdio
Undocumented tools
0
description under 20 chars · avg 0

Tokens estimated at four characters each. The tool list is re-read by the agent on every turn, so it is the number to compare between servers that do the same job: ranked across the index.

Known vulnerabilities

No advisories in OSV for @azure/mcp@4.0.0-beta.7 as of 3d ago. This is the package itself, not its dependencies.