Skills/npm/plugin-mcp

plugin-mcp@0.48.3

CAUTION· install only

Publisher claims: "MCP (Model Context Protocol) client plugin for moxxy — connect to MCP servers and surface their tools." Observed in sandbox: no network, touches nothing outside the project, writes no memory.

Registry npm (MCP server)Publisher moxxy · publishing for 134 daysInstalls 1,828Last detonated 7d ago
What would fix thisWatchDispute verdict

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 2026-11-08 and scored it 65/100 (Caution). It is not known to be malicious, but it has behaviour or code a security policy should decide on before install. Notable findings: URL to the cloud instance metadata address; URL to the cloud instance metadata address; URL to the cloud instance metadata address. 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

CRITICAL
URL to the cloud instance metadata addressdist/admin/schema.js:42 · URL to the cloud instance metadata address — reads the VM's credentials// (e.g. file:///etc/passwd, http://169.254.169.254 metadata). The humanFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST07
CRITICAL
URL to the cloud instance metadata addressdist/admin/schema.js:42 · URL to the cloud instance metadata address — reads the VM's credentials// (e.g. file:///etc/passwd, http://169.254.169.254 metadata). The humanFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST07
CRITICAL
URL to the cloud instance metadata addresssrc/admin/schema.ts:49 · URL to the cloud instance metadata address — reads the VM's credentials// (e.g. file:///etc/passwd, http://169.254.169.254 metadata). The humanFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST07
HIGH
Access to sensitive file pathssrc/admin/schema.ts:49 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files// (e.g. file:///etc/passwd, http://169.254.169.254 metadata). The humanFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
MEDIUM
npx invocation of non-well-known packagedist/timeout.js:11 · npx invocation of non-well-known package — may execute untrusted code* 30s is generous for a real handshake (npx cold-start, slow proxy auth) butFix: Pin versions and sources; vendor anything fetched at install time.
AST06
MEDIUM
MCP server using network transport (SSE/HTTP)dist/types.d.ts:21 · MCP server using network transport (SSE/HTTP) — data sent over networkexport type McpServerConfig = StdioServerConfig | SseServerConfig | StreamableHttpServerConfig;Fix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.
AST04
HIGH
Access to sensitive file pathsdist/admin/schema.js:42 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files// (e.g. file:///etc/passwd, http://169.254.169.254 metadata). The humanFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
MEDIUM
npx invocation of non-well-known packagedist/timeout.d.ts:11 · npx invocation of non-well-known package — may execute untrusted code* 30s is generous for a real handshake (npx cold-start, slow proxy auth) butFix: Pin versions and sources; vendor anything fetched at install time.
AST06
MEDIUM
MCP server using network transport (SSE/HTTP)dist/index.d.ts:3 · MCP server using network transport (SSE/HTTP) — data sent over networkexport type { McpClientLike, McpContentBlock, McpPluginOptions, McpServerConfig, McpToolDescriptor, SseServerConfig, StdioServerConfig, StreamableHttpServerConfig, } from './types.js';Fix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.
AST04
MEDIUM
Access to sensitive file pathssrc/admin/schema.test.ts:62 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files'file:///etc/passwd',Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
CRITICAL
URL to the cloud instance metadata addresssrc/admin/schema.ts:49 · URL to the cloud instance metadata address — reads the VM's credentials// (e.g. file:///etc/passwd, http://169.254.169.254 metadata). The humanFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST07
MEDIUM
MCP server using network transport (SSE/HTTP)src/types.ts:24 · MCP server using network transport (SSE/HTTP) — data sent over networkexport type McpServerConfig = StdioServerConfig | SseServerConfig | StreamableHttpServerConfig;Fix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.
AST04
MEDIUM
npx invocation of non-well-known packagesrc/timeout.ts:11 · npx invocation of non-well-known package — may execute untrusted code* 30s is generous for a real handshake (npx cold-start, slow proxy auth) butFix: Pin versions and sources; vendor anything fetched at install time.
AST06

Cost to the agent

Instructions loaded
≈53 tok
1 file · 68 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 @moxxy/plugin-mcp@0.48.3 as of 7d ago. This is the package itself, not its dependencies.

What would make this Verified

15 points to 80 · weights: behavior 45%, static 25%, prompt 15%, publisher 15%
  1. URL to the cloud instance metadata address≈ +9 on the totalStop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
  2. Unclaimed publisher≈ +8 on the totalClaim moxxy: a verified publisher gets +50 on publisher trust. It is free and usually instant with GitHub sign-in.
  3. 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.
  4. New publisher≈ +3 on the totalTime clears this on its own after 14 and 30 days. Claiming the handle (+50) is the fastest way past it.
  5. npx invocation of non-well-known package≈ +2 on the totalPin versions and sources; vendor anything fetched at install time.
  6. MCP server using network transport (SSE/HTTP)≈ +2 on the totalNamespace tool names and keep tool descriptions literal; no instructions to the agent inside them.
Publish a new version to npm, then queue it here. Not your skill? Claim the handle to get verdict changes by email.Claim moxxyPropose a patch to the maintainer