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

WHAT IT DOES

What assign_task does on Agent-Comm-Hub

AI agents invoke assign_task to trigger actions in Agent-Comm-Hub. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why assign_task needs a policy

This tool triggers autonomous execution by another agent without any human-in-the-loop confirmation. The downstream effects depend entirely on what task is assigned, and since execution is automatic and immediate, misuse could cascade across multiple agents in a multi-agent system, warranting high severity.

From the tool's definition "对方收到 task_assigned 事件后会自主开始执行，无需人工确认" (the receiving agent autonomously begins execution upon receiving the task_assigned event, with no human confirmation required)

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

assign_task Rate-limited

assign_task stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "assign_task": {
      "limits": [
        {
          "counter": "assign_task_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-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 assign_task

What does the assign_task tool do? +

将任务分配给另一个 Agent。对方收到 task_assigned 事件后会自主开始执行，无需人工确认。. It is categorised as a Execute tool in the Agent-Comm-Hub MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on assign_task? +

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

assign_task is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit assign_task? +

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

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

assign_task 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.