Search npm registry for packages by keyword
AI agents call search_packages to retrieve information from NPM Context Agent MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries the npm registry without creating, modifying, deleting, or executing anything. The worst-case misuse (e.g., aggressive queries) poses minimal risk compared to tools that modify packages or execute code. Classification as Read is appropriate.
From the tool's definition Tool 'search_packages' searches npm registry for packages by keyword—a pure query operation with no side effects or mutations.
Attacks that exploit this kind of access
Search npm registry for packages by keyword. It is categorised as a Read tool in the NPM Context Agent MCP MCP Server, which means it retrieves data without modifying state.
Register the NPM Context Agent MCP server in PolicyLayer and add a rule for search_packages: 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 Context Agent MCP. Nothing to install.
search_packages 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 search_packages 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 search_packages. 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.
search_packages is provided by the NPM Context Agent MCP server (juansebastiangb/npm-context-agent-mcp). 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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