get_online_client

Get online client list

SERVERNapCat MCP Server SOURCE1021143806/napcat_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/1021143806-napcat-mcp/get-online-client.md

WHAT IT DOES

What get_online_client does on NapCat MCP Server

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

RISK

Why get_online_client is rated Low

This tool retrieves information about online clients—a read-only query with no side effects. It does not create, modify, delete, execute code, or commit financial transactions. The blast radius of misuse is minimal, as an attacker could only gain visibility into which clients are currently connected, which is informational data.

From the tool's definition Tool name 'get_online_client' and description 'Get online client list' indicate a retrieval operation that queries the status of connected clients without modifying any data or triggering external actions.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs get_online_client safely

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

get_online_client Allowed

get_online_client 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": {
    "get_online_client": {}
  }
}

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

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

FAQ

Questions about get_online_client

What does the get_online_client tool do? +

Get online client list. It is categorised as a Read tool in the NapCat MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_online_client? +

Register the NapCat MCP Server MCP server in PolicyLayer and add a rule for get_online_client: 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 NapCat MCP Server. Nothing to install.

What risk level is get_online_client? +

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

Can I rate-limit get_online_client? +

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

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

get_online_client is provided by the NapCat MCP Server MCP server (1021143806/napcat_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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