Search project registry by name or description. Use this instead of reading the full registry.
AI agents call search_projects to retrieve information from N2n Nexus without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a search/query operation on project metadata, which is a classic Read operation. It retrieves information from the registry but does not create, modify, delete, or execute any actions. The low severity reflects minimal blast radius—misuse would only expose project information visibility, not compromise or alter any system state.
From the tool's definition Tool description explicitly states 'Search project registry by name or description' - a retrieval operation with no modification or side effects.
Documented attack patterns abuse exactly the kind of access search_projects gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and N2n Nexus, and nothing reaches the server without passing your rules. This is the rule we recommend for search_projects:
{
"version": "1",
"default": "deny",
"tools": {
"search_projects": {}
}
}search_projects is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Search project registry by name or description. Use this instead of reading the full registry. It is categorised as a Read tool in the N2n Nexus MCP Server, which means it retrieves data without modifying state.
Register the N2n Nexus MCP server in PolicyLayer and add a rule for search_projects: 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 N2n Nexus. Nothing to install.
search_projects 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_projects 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_projects. 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_projects is provided by the N2n Nexus MCP server (n2ns/n2n-nexus). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from N2n Nexus, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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22 N2n Nexus tools catalogued and risk-classified — across an index of 43,000+ MCP servers.