Skills/npm/unity-mcp-cli

unity-mcp-cli@1.7.1

CAUTION· not started

Publisher claims: "Cross-platform CLI tool for AI Game Developer (Skills & MCP). Full AI develop and test loop. Efficient token usage, advanced tools. Creates Unity project, installs plugins, configures tools, and manages HTTP connection with Unity Editor and a game made wi" Observed in sandbox: no network, touches nothing outside the project, writes no memory.

Registry npm (MCP server)Publisher ivanmurzak · publishing for 247 daysInstalls 9,299Last detonated 12 h ago
What would fix thisWatchDispute verdict

Coverage

Not started: dependency install failed; the server itself was not observed.
Tested
the dependency install step · every file read, file written and host contacted by what ran
Not tested
server startup · the tool list · tool behavior

What this means for the label: Caution 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
ai-game.dev (its own)Also openupm.com, unity3d.com, unity.com — not the publisher's domain; check what for before connecting.
What the honeypot saw
no credential files read · no network
What we could not test
server startup · the tool list · tool behavior

Connect it under the guard. Not started: dependency install failed; the server itself was not observed. The code names no credential variable and talks to ai-game.dev, its own; the guard pins the network to what the honeypot saw and logs every call.

$vet-skills run --net declared -- npx -y unity-mcp-cli

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 (2 scenarios; not started: dependency install failed; the server itself was not observed) on 2026-11-14 and scored it 76/100 (Caution). It is not known to be malicious, but it has behaviour or code a security policy should decide on before install. Notable findings: Access to sensitive file paths; Privileged sudo command; Destructive file system command detected. Summary: no network, touches nothing outside the project, writes no memory.

Behavior trace

Honeypot run · 6 s · 2 scenarios · 0 deviations
t+CategoryObserved action
0.0sprocessno install scripts in bundle
5.9sprocessdependency install exit 1 · (Use `node --trace-warnings ...` to show where the warning was created) npm error Cannot read properties of null (reading 'edgesOut') npm error A complete log of this run can be found in: /tmp/ks-detonate-iIlfHx/task/home/.npm/_logs/2026-11-14T01_19_27_123Z-debug-0.log
5.9sclaimednot started: dependency install failed (exit 1); the server itself was not observed
5.9sprocessscript backend runs setup only
5.9sprocessno install scripts to re-run

Static findings

HIGH
Access to sensitive file pathsdist/utils/unity-editor.js:406 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system filesreturn { ...process.env, ...env };Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
HIGH
Privileged sudo commanddist/commands/update.js:62 · Privileged sudo command — agent may execute with elevated privilegesui.info(`Try: sudo npm install -g ${PACKAGE_NAME}@latest`);Fix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.
AST05
MEDIUM
Process kill commanddist/commands/close.js:40 · Process kill command — agent can terminate processes* "kill all Unity processes on host" invocations, so a positive ID ofFix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.
AST05
MEDIUM
Process kill commanddist/commands/close.js:225 · Process kill command — agent can terminate processesspinner.error(`Failed to force-kill PID ${pid}`);Fix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.
AST05
MEDIUM
Process kill commanddist/commands/close.js:155 · Process kill command — agent can terminate processes.option('--force', 'Hard-kill the Editor if it does not exit within --timeout')Fix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.
AST05
MEDIUM
Process kill commanddist/commands/close.d.ts:23 · Process kill command — agent can terminate processes* "kill all Unity processes on host" invocations, so a positive ID ofFix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.
AST05
HIGH
Destructive file system command detecteddist/commands/open.js:260 · Destructive file system command detected// Single info-level log line on dismissal — exact formatFix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.
AST05
MEDIUM
npx invocation of non-well-known packagedist/commands/open.js:69 · npx invocation of non-well-known package — may execute untrusted codeui.info('Install latest stable: npx unity-mcp-cli install-unity');Fix: Pin versions and sources; vendor anything fetched at install time.
AST06
MEDIUM
Process kill commanddist/utils/unity-hub.js:618 · Process kill command — agent can terminate processes// exceed Node's 1 MiB default, which would otherwise kill (withFix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.
AST05
MEDIUM
npx invocation of non-well-known packagedist/utils/unity-editor.js:464 · npx invocation of non-well-known package — may execute untrusted code: `npx unity-mcp-cli ${commandName} <path> --unity ${editors[0].version}`;Fix: Pin versions and sources; vendor anything fetched at install time.
AST06
MEDIUM
npx invocation of non-well-known packagedist/commands/open.js:67 · npx invocation of non-well-known package — may execute untrusted codeui.info(`Install it: npx unity-mcp-cli install-unity ${requestedVersion}`);Fix: Pin versions and sources; vendor anything fetched at install time.
AST06
MEDIUM
MCP server using network transport (SSE/HTTP)dist/utils/rid.js:7 · MCP server using network transport (SSE/HTTP) — data sent over network* `gamedev-mcp-server-<rid>.zip` release asset to download. Ported from the plugin's C#Fix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.
AST04
MEDIUM
npx invocation of non-well-known packagedist/utils/unity-editor.js:449 · npx invocation of non-well-known package — may execute untrusted codeui.info(`Install it: npx unity-mcp-cli install-unity ${requestedVersion}`);Fix: Pin versions and sources; vendor anything fetched at install time.
AST06
MEDIUM
npx invocation of non-well-known packagedist/commands/open.js:80 · npx invocation of non-well-known package — may execute untrusted code? `npx unity-mcp-cli ${commandName} --unity ${editors[0].version} --path <path> --url <url>`Fix: Pin versions and sources; vendor anything fetched at install time.
AST06
MEDIUM
npx invocation of non-well-known packagedist/utils/unity-editor.js:463 · npx invocation of non-well-known package — may execute untrusted code? `npx unity-mcp-cli ${commandName} --unity ${editors[0].version} --path <path> --url <url>`Fix: Pin versions and sources; vendor anything fetched at install time.
AST06
MEDIUM
npx invocation of non-well-known packagedist/commands/update.js:26 · npx invocation of non-well-known package — may execute untrusted codeui.info('Running via npx — it always fetches the latest published version.');Fix: Pin versions and sources; vendor anything fetched at install time.
AST06
MEDIUM
MCP server using network transport (SSE/HTTP)dist/utils/rid.d.ts:5 · MCP server using network transport (SSE/HTTP) — data sent over network* `gamedev-mcp-server-<rid>.zip` release asset to download. Ported from the plugin's C#Fix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.
AST04
MEDIUM
npx invocation of non-well-known packagedist/utils/unity-editor.js:451 · npx invocation of non-well-known package — may execute untrusted codeui.info('Install latest stable: npx unity-mcp-cli install-unity');Fix: Pin versions and sources; vendor anything fetched at install time.
AST06
MEDIUM
npx invocation of non-well-known packagedist/commands/open.js:81 · npx invocation of non-well-known package — may execute untrusted code: `npx unity-mcp-cli ${commandName} <path> --unity ${editors[0].version}`;Fix: Pin versions and sources; vendor anything fetched at install time.
AST06

Cost to the agent

Instructions loaded
≈100 tok
1 file · 81 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 unity-mcp-cli@1.7.1 as of 4 h ago. This is the package itself, not its dependencies.

What would make this Verified

4 points to 80 · weights: behavior 45%, static 25%, prompt 15%, publisher 15%
  1. Unclaimed publisher≈ +8 on the totalClaim ivanmurzak: a verified publisher gets +50 on publisher trust. It is free and usually instant with GitHub sign-in.
  2. Access to sensitive file paths≈ +4 on the totalStop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
  3. Privileged sudo command≈ +4 on the totalBuild commands from fixed arguments; do not interpolate untrusted strings into a shell.
  4. Destructive file system command detected≈ +4 on the totalBuild commands from fixed arguments; do not interpolate untrusted strings into a shell.
  5. Process kill command≈ +2 on the totalBuild commands from fixed arguments; do not interpolate untrusted strings into a shell.
  6. npx invocation of non-well-known package≈ +2 on the totalPin versions and sources; vendor anything fetched at install time.
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