set_group_card

Set group member card

SERVERNapCat MCP Server SOURCE1021143806/napcat_mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/1021143806-napcat-mcp/set-group-card.md

WHAT IT DOES

What set_group_card does on NapCat MCP Server

AI agents use set_group_card to create or update resources in NapCat MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your NapCat MCP Server environment.

RISK

Why set_group_card is rated Medium

This tool modifies group member information (card/nickname) but does not delete data or execute arbitrary code. It's a reversible write operation affecting group member attributes. Severity is medium because unauthorized modification of group member cards could disrupt group operations and user identity, but has limited blast radius compared to message deletion or credential exposure.

From the tool's definition Tool name 'set_group_card' combined with description 'Set group member card' indicates a modification operation. This creates or modifies member metadata within a QQ group.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

set_group_card Rate-limited

set_group_card stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "set_group_card": {
      "limits": [
        {
          "counter": "set_group_card_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT 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 set_group_card call is checked against it from then on.

FAQ

Questions about set_group_card

What does the set_group_card tool do? +

Set group member card. It is categorised as a Write tool in the NapCat MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on set_group_card? +

Register the NapCat MCP Server MCP server in PolicyLayer and add a rule for set_group_card: 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 set_group_card? +

set_group_card is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit set_group_card? +

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

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

set_group_card 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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