list

Lists Go packages or modules and returns structured information. When

SERVERNpm SOURCEDave-London/Pare

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-dave-london-npm/list.md

WHAT IT DOES

What list does on Npm

AI agents call list to retrieve information from Npm without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why list is rated Low

This tool retrieves and queries package or module metadata without creating, modifying, deleting, or executing operations. It has no side effects on the system or data beyond returning information, making it a Read-category tool with low severity risk.

From the tool's definition Tool description states 'Lists Go packages or modules and returns structured information.' The verb 'lists' and the read-only nature of querying package/module information without modification indicates this is a retrieval operation.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs list safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Npm, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For list, this is the rule to start with:

list Allowed

list is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "list": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Npm, apply this rule, and every list call is checked against it from then on.

FAQ

Questions about list

What does the list tool do? +

Lists Go packages or modules and returns structured information. When. It is categorised as a Read tool in the Npm MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list? +

Register the Npm MCP server in PolicyLayer and add a rule for list: 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 Npm. Nothing to install.

What risk level is list? +

list is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit list? +

Yes. Add a rate_limit block to the list 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 list completely? +

Set action: deny in the PolicyLayer policy for list. 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 list? +

list is provided by the Npm MCP server (Dave-London/Pare). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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Guides

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