Skills/npm/mcp-server

mcp-server@1.23.2

VERIFIED

Publisher claims: "MCP server for the New York State Design System. Exposes components, tokens, and documentation to AI assistants." Observed in sandbox: no network, touches nothing outside the project, writes no memory.

Registry npm (MCP server)Publisher nysds · publishing for 283 daysInstalls 1,123Last detonated 16 h ago
$claude mcp add mcp-server -- npx -y @nysds/mcp-server
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Coverage

Server started and answered tools/list.
Tested
MCP initialize and tools/list · every tool description, for hidden instructions · every file read, file written and host contacted by what ran
Not tested
what the tools do when called with real credentials

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 ny.gov — 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
what the tools do when called with real credentials

Connect it under the guard; read the third-party hosts first. The code names ny.gov as well as its own vendor. The guard pins the network to the hosts the honeypot saw.

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

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) on 2026-11-13 and scored it 83/100 (Verified). It did what it claims and nothing else we could detect: no undeclared network egress, no credential reads, no persistent instruction writes. Summary: no network, touches nothing outside the project, writes no memory.

Behavior trace

Honeypot run · 28 s · 2 scenarios · 0 deviations
t+CategoryObserved action
0.0sprocessno install scripts in bundle
8.2sprocessdependency install exit 0
28sclaimed8 tools: find_components, get_component, find_tokens, get_token, get_token_graph, validate_component_api, get_utility_classes, get_guide
28stools6c1c8e8dafcc99a9
28stools017799fea575a03d
28stools2026c29ae9d18353
28stools6222ce66fa24685d
28stoolsb81c79efb9992198
28stools1ffd844ba1baca07
28stools6d6d6f49dee63cba
28stools412074f255f54730
28sprocessscript backend runs setup only
28sprocessno install scripts to re-run

Static findings

CRITICAL
HTML comment carrying imperative instructions to the agentdata/guides/frameworks/react.md:1 · HTML comment carrying imperative instructions to the agentGENERATED FILE. Do not edit directly. Source: packages/react/README.md + data/guides/frameworks/react-additions.md Regenerate with: npm run sync:guides -w @nysdFix: Keep SKILL.md to visible, descriptive text. Remove comments and encoded text that address the agent.
AST01
MEDIUM
npx invocation of non-well-known packagedist/index.d.ts:6 · npx invocation of non-well-known package — may execute untrusted code* Run via: npx @nysds/mcp-serverFix: Pin versions and sources; vendor anything fetched at install time.
AST06
HIGH
Destructive file system command detecteddist/resources/tokens.js:18 · Destructive file system command detected// nysds://tokens - All design tokens in CSS-centric formatFix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.
AST05
CRITICAL
HTML comment carrying imperative instructions to the agentdata/guides/frameworks/vue.md:1 · HTML comment carrying imperative instructions to the agentGENERATED FILE. Do not edit directly. Source: packages/vue/README.md Regenerate with: npm run sync:guides -w @nysds/mcp-serverFix: Keep SKILL.md to visible, descriptive text. Remove comments and encoded text that address the agent.
AST01
CRITICAL
HTML comment carrying imperative instructions to the agentdata/guides/frameworks/angular.md:1 · HTML comment carrying imperative instructions to the agentGENERATED FILE. Do not edit directly. Source: packages/angular/README.md Regenerate with: npm run sync:guides -w @nysds/mcp-serverFix: Keep SKILL.md to visible, descriptive text. Remove comments and encoded text that address the agent.
AST01
MEDIUM
npx invocation of non-well-known packagedist/index.js:6 · npx invocation of non-well-known package — may execute untrusted code* Run via: npx @nysds/mcp-serverFix: Pin versions and sources; vendor anything fetched at install time.
AST06
MEDIUM
npx invocation of non-well-known packagepackage.json:28 · npx invocation of non-well-known package — may execute untrusted code"inspect": "npx -y @modelcontextprotocol/inspector node dist/index.js"Fix: Pin versions and sources; vendor anything fetched at install time.
AST06

Cost to the agent

Instructions loaded
≈65 tok
1 file · 59 in bundle
Tool list per prompt
≈1,729 tok
8 tools · 216 per tool
Handshake
685 ms
launch to tools/list, stdio
Undocumented tools
0
description under 20 chars · avg 235

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 @nysds/mcp-server@1.23.2 as of 16 h ago. This is the package itself, not its dependencies.