generate_invite · Agent-Comm-Hub MCP: Risk & Policy

WHAT IT DOES

What generate_invite does on Agent-Comm-Hub

AI agents use generate_invite to create or update resources in Agent-Comm-Hub — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Agent-Comm-Hub environment.

WHY IT NEEDS A POLICY

Why generate_invite needs a policy

This tool creates new invite codes, which is a reversible write operation that modifies the invitation system state. While restricted to admin users, a compromised admin account or agent with admin privileges could generate invite codes to onboard unauthorized agents.

From the tool's definition Tool generates (creates) new Agent invite codes with configurable expiration. Description states it creates invitations that expire after 24 hours by default. 'Generate' and 'create' are write operations.

Risk signalsAdmin/system-level operation

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

generate_invite Rate-limited

generate_invite 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": {
    "generate_invite": {
      "limits": [
        {
          "counter": "generate_invite_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Agent-Comm-Hub, so you can run agents against it safely.

FAQ

Questions about generate_invite

What does the generate_invite tool do? +

生成新 Agent 邀请码。仅 admin 可调用。邀请码默认 24 小时后过期。. It is categorised as a Write tool in the Agent-Comm-Hub MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on generate_invite? +

Register the Agent-Comm-Hub MCP server in PolicyLayer and add a rule for generate_invite: 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 Agent-Comm-Hub. Nothing to install.

What risk level is generate_invite? +

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

Can I rate-limit generate_invite? +

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

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

generate_invite is provided by the Agent-Comm-Hub MCP server (liuboacean/agent-comm-hub). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.