Skills/npm/mcp-server

mcp-server@0.135.1

VERIFIED· not started

Publisher claims: "MCP server for Cmssy - hosted headless CMS with native commerce, run by your AI agent" Observed in sandbox: no network, touches nothing outside the project, writes no memory.

Registry npm (MCP server)Publisher cmssy · publishing for 254 daysInstalls 13,470Last detonated 7d ago
$claude mcp add mcp-server -- npx -y @cmssy/mcp-server
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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: 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

Code inventory arrives with this version's next honeypot run.
It will ask for
unknown until the next run
Where it talks to
unknown until the next run
What the honeypot saw
no credential files read · no network
What we could not test
server startup · the tool list · tool behavior

Not enough was observed to say yet. Not started: dependency install failed; the server itself was not observed. This version's code has not been inventoried for credentials and hosts either; both arrive with its next honeypot run (popular servers first). `vet-skills try mcp-server` runs it now and prints the full answer.

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 2026-11-07 and scored it 83/100 (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 · 1 s · 2 scenarios · 0 deviations
t+CategoryObserved action
0.0sprocessno install scripts in bundle
0.8sprocessdependency install exit 1
0.9sprocessexec /usr/bin/date
0.9sprocessexec /usr/bin/timeout
0.9sclaimedno tools/list reply (exit 0)
0.9sprocessscript backend runs setup only
0.9sprocessno install scripts to re-run

Static findings

MEDIUM
Access to sensitive file pathsdist/__tests__/hosted-server.test.js:107 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system filesarguments: { workspace: "acme/shop", filePath: "/etc/passwd" },Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
MEDIUM
URL to the cloud instance metadata addressdist/__tests__/hosted-server.test.js:115 · URL to the cloud instance metadata address — reads the VM's credentialsexpect(fetchUrl).toHaveBeenCalledWith("http://169.254.169.254/x");Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST07
HIGH
Access to sensitive file pathsdist/init-assets.generated.js:4 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files"path": ".env.example",Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
MEDIUM
URL to the cloud instance metadata addressdist/__tests__/hosted-server.test.js:112 · URL to the cloud instance metadata address — reads the VM's credentialsarguments: { workspace: "acme/shop", url: "http://169.254.169.254/x" },Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST07
MEDIUM
URL to the cloud instance metadata addressdist/__tests__/hosted-server.test.js:112 · URL to the cloud instance metadata address — reads the VM's credentialsarguments: { workspace: "acme/shop", url: "http://169.254.169.254/x" },Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST07
HIGH
Access to sensitive file pathsdist/init-assets.generated.js:5 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files"content": "# `npx @cmssy/cli@latest link --token cs_...` writes all three into .env.local for you.\n# Your organization slug (Settings -> Headless in the cmssy dashboard)\nCMSSY_ORG_SLUG=\n# Your worFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
MEDIUM
URL to the cloud instance metadata addressdist/__tests__/hosted-server.test.js:115 · URL to the cloud instance metadata address — reads the VM's credentialsexpect(fetchUrl).toHaveBeenCalledWith("http://169.254.169.254/x");Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST07
MEDIUM
npx invocation of non-well-known packagedist/init-assets.generated.js:5 · npx invocation of non-well-known package — may execute untrusted code"content": "# `npx @cmssy/cli@latest link --token cs_...` writes all three into .env.local for you.\n# Your organization slug (Settings -> Headless in the cmssy dashboard)\nCMSSY_ORG_SLUG=\n# Your worFix: Pin versions and sources; vendor anything fetched at install time.
AST06
MEDIUM
Access to sensitive file pathsdist/__tests__/site-setup.test.js:77 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system filespath: rel === "env.example" ? ".env.example" : rel,Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
LOW
URL to a private-network addressdist/__tests__/media-upload.test.js:109 · URL to a private-network address — a LAN or development targetawait expect(resolveUploadSource({ url: "http://10.0.0.1/a.png" }, { allowFilePath: false, fetchUrl })).rejects.toThrow("blocked by host");Fix: Replace encoded or assembled strings with plain literals and remove undeclared network calls.
AST07
LOW
URL to a private-network addressdist/__tests__/media-upload.test.js:110 · URL to a private-network address — a LAN or development targetexpect(fetchUrl).toHaveBeenCalledWith("http://10.0.0.1/a.png");Fix: Replace encoded or assembled strings with plain literals and remove undeclared network calls.
AST07
LOW
URL to a private-network addressdist/__tests__/media-upload.test.js:110 · URL to a private-network address — a LAN or development targetexpect(fetchUrl).toHaveBeenCalledWith("http://10.0.0.1/a.png");Fix: Replace encoded or assembled strings with plain literals and remove undeclared network calls.
AST07
LOW
URL to a private-network addressdist/__tests__/media-upload.test.js:109 · URL to a private-network address — a LAN or development targetawait expect(resolveUploadSource({ url: "http://10.0.0.1/a.png" }, { allowFilePath: false, fetchUrl })).rejects.toThrow("blocked by host");Fix: Replace encoded or assembled strings with plain literals and remove undeclared network calls.
AST07

Cost to the agent

Instructions loaded
≈59 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 @cmssy/mcp-server@0.135.1 as of 7d ago. This is the package itself, not its dependencies.