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

WHAT IT DOES

What veto_strategy does on Agent-Comm-Hub

AI agents use veto_strategy 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 veto_strategy needs a policy

This tool modifies strategy state reversibly by vetoing/withdrawing strategies based on feedback thresholds. It does not permanently delete data (would be Destructive), nor does it execute arbitrary code or trigger external operations (Execute), nor does it handle financial transactions (Financial). The action is reversible—a vetoed strategy could theoretically be re-enabled or re-submitted.

From the tool's definition Tool name: veto_strategy; Description states it withdraws/retracts strategies within a veto window (admin only) and is only available when negative feedback exceeds positive feedback by 50%. The mechanism modifies the state of strategies by withdrawing them.

Risk signalsAdmin/system-level operation

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

veto_strategy Rate-limited

veto_strategy 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": {
    "veto_strategy": {
      "limits": [
        {
          "counter": "veto_strategy_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 veto_strategy

What does the veto_strategy tool do? +

撤回处于否决窗口内的策略（admin only）。仅在负面反馈超过正面反馈 50% 时可用。. 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 veto_strategy? +

Register the Agent-Comm-Hub MCP server in PolicyLayer and add a rule for veto_strategy: 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 veto_strategy? +

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

Can I rate-limit veto_strategy? +

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

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

veto_strategy 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.