nb_list_agents

List available AI agent templates and active conversations.

SERVERNodebench SOURCEnodebench-mcp

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-homenshum-nodebench/nb-list-agents.md

WHAT IT DOES

What nb_list_agents does on Nodebench

AI agents call nb_list_agents 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.

RISK

Why nb_list_agents is rated Low

This tool retrieves and enumerates data (agent templates and conversation records) without creating, modifying, deleting, or executing any operations. It is a straightforward read-only query with minimal risk even if misused by an AI agent.

From the tool's definition Tool name contains 'list' and description states 'List available AI agent templates and active conversations' — a query operation with no side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs nb_list_agents 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_list_agents, this is the rule to start with:

nb_list_agents Allowed

nb_list_agents 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": {
    "nb_list_agents": {}
  }
}

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

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

FAQ

Questions about nb_list_agents

What does the nb_list_agents tool do? +

List available AI agent templates and active conversations. It is categorised as a Read tool in the Nodebench MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on nb_list_agents? +

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

What risk level is nb_list_agents? +

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

Can I rate-limit nb_list_agents? +

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

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

nb_list_agents is provided by the Nodebench MCP server (nodebench-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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