Buscar paquetes en el registro de npm
AI agents call npm_search to retrieve information from NPM MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a read-only search operation against the npm registry to discover and retrieve package metadata. It has no side effects, does not execute code, does not modify packages, and does not delete or create resources. It is purely informational, consistent with the Read category for retrieval operations.
From the tool's definition Tool name 'npm_search' and description 'Buscar paquetes en el registro de npm' (Search packages in the npm registry) indicate a query operation that retrieves package information without modifying any data.
Attacks that exploit this kind of access
Buscar paquetes en el registro de npm. It is categorised as a Read tool in the NPM MCP Server MCP Server, which means it retrieves data without modifying state.
Register the NPM MCP Server MCP server in PolicyLayer and add a rule for npm_search: 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 MCP Server. Nothing to install.
npm_search is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the npm_search 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.
Set action: deny in the PolicyLayer policy for npm_search. 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.
npm_search is provided by the NPM MCP Server MCP server (kpangaa/npm-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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