mcp@2.0.15

VERIFIED· install only

Publisher claims: "Expose HazelJS tools as MCP (Model Context Protocol) tools over STDIO" Observed in sandbox: no network, touches nothing outside the project, writes no memory.

Registry npm (MCP server)Publisher hazeljs · publishing for 253 daysInstalls 1,401Last detonated 5d ago
$claude mcp add mcp -- npx -y @hazeljs/mcp
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Coverage

Nothing executable in the bundle ran; the trace covers the install step only.
Tested
every file read, file written and host contacted by what ran
Not tested
use of the skill by an agent

Is [email protected] safe to install?

KillerSkills ran it in the KillerSkills honeypot sandbox (1 scenario; nothing executable in the bundle ran; the trace covers the install step only) on 2026-11-10 and scored it 93/100 (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: no network, touches nothing outside the project, writes no memory.

Behavior trace

Honeypot run · 0 s · 1 scenarios · 0 deviations
t+CategoryObserved action
0.0sprocessno install scripts in bundle
0.0sprocessscript backend runs setup only
0.0sprocessscript backend runs setup only
0.0sprocessno install scripts to re-run

Static findings

MEDIUM
MCP server using network transport (SSE/HTTP)dist/index.d.ts:23 · MCP server using network transport (SSE/HTTP) — data sent over networkexport type { McpClientOptions, McpServerConfig, McpTransportConfig, McpStdioTransportConfig, McpHttpTransportConfig, McpRemoteTool, McpToolCallResult, } from './client/types';Fix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.
AST04

No other findings across 1,670 lines in 19 files.

Cost to the agent

Instructions loaded
≈41 tok
1 file · 19 in bundle

Tokens estimated at four characters each. Skills load their instruction text when triggered; the figure is what that costs.

Known vulnerabilities

No advisories in OSV for @hazeljs/mcp@2.0.15 as of 5d ago. This is the package itself, not its dependencies.

mcp@2.0.15 safety verdict: Verified (install only) — KillerSkills