nb_filter_tool_activity

What nb_filter_tool_activity does on Nodebench

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

Why nb_filter_tool_activity is rated Low

This tool retrieves and filters records from a ledger based on search criteria (tool name, date, status). Filtering is a read-only operation that queries data without creating, modifying, deleting, or executing actions. The low severity reflects minimal risk—an AI agent misusing this can only over-query or access unintended ledger records, not cause irreversible harm.

From the tool's definition Tool name 'nb_filter_tool_activity' and description 'Filter the MCP ledger by tool name, date, or status' indicate querying/filtering existing data with no modification capability.

The rule that runs nb_filter_tool_activity safely

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

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

Questions about nb_filter_tool_activity