node-repl-mcp@0.28.0
VERIFIEDPublisher claims: "Standalone MCP server exposing persistent JavaScript (js/js_reset) with the Computer Use runtime." Observed in sandbox: no network, touches nothing outside the project, writes no memory.
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
MAX_MODEL_TEXT_TOKENSConfiguration, not credentials: npm_execpath, QWEN_NODE_REPL_DEBUG, QWEN_NODE_REPL_MODULE_DIRS, QWEN_NODE_REPL_ROOTS, SUDO_UID, SystemRoot- Where it talks to
- no vendor host named in the codeAlso apple.com — 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 with a scoped credential, under the guard, and read the third-party hosts first. The code names apple.com as well as its own vendor. The guard injects MAX_MODEL_TEXT_TOKENS only into requests to the host you bind (and its subdomains) and refuses the rest.
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 2026-11-09 and scored it 88/100 (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 · 31 s · 2 scenarios · 0 deviationsStatic findings
const normalized = { ...env };Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.// Under npx this is npm's own CLI script; run it with the same Node.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 @qwen-code/node-repl-mcp@0.28.0 as of 5d ago. This is the package itself, not its dependencies.