nodejs_install_deps

THE RISK

High Risk

Why nodejs_install_deps needs a policy

Installing dependencies executes a package manager command that downloads and runs arbitrary third-party code on the system. This is an Execute-category action with high severity because a misuse or supply-chain compromise could result in malicious code being installed and run in the environment.

From the tool's definition Install Node.js dependencies with npm, yarn, pnpm, or bun

Documented attack patterns abuse exactly the kind of access nodejs_install_deps gives an agent:

POLICY

How to control nodejs_install_deps

PolicyLayer is an MCP gateway — it sits between your AI agents and MCP DevTools Server, and nothing reaches the server without passing your rules. This is the rule we recommend for nodejs_install_deps:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "nodejs_install_deps": {
      "limits": [
        {
          "counter": "nodejs_install_deps_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

nodejs_install_deps stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

Create a free account and register MCP DevTools Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

RATE-LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

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Go deeper

High-risk tools in MCP DevTools Server → Every high-risk tool this server exposes, in one view.
All high-risk MCP tools → Every high-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Agent sandbox → Bounding what an agent can execute and where the boundary should sit.
Least privilege for MCP → Granting agents the minimum tool surface the task needs.
Rate Limiting MCP Tool Calls: A Practical Guide →
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FAQ

Questions about nodejs_install_deps

What does the nodejs_install_deps tool do? +

Install Node.js dependencies with npm, yarn, pnpm, or bun. It is categorised as a Execute tool in the MCP DevTools Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on nodejs_install_deps? +

Register the MCP DevTools Server MCP server in PolicyLayer and add a rule for nodejs_install_deps: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches MCP DevTools Server. Nothing to install.

What risk level is nodejs_install_deps? +

nodejs_install_deps is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit nodejs_install_deps? +

Yes. Add a rate_limit block to the nodejs_install_deps rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block nodejs_install_deps completely? +

Set action: deny in the PolicyLayer policy for nodejs_install_deps. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides nodejs_install_deps? +

nodejs_install_deps is provided by the MCP DevTools Server MCP server (rshade/mcp-devtools-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every MCP DevTools Server tool call.

Start from MCP DevTools Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →