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

WHAT IT DOES

What create_parallel_group does on Agent-Comm-Hub

AI agents use create_parallel_group 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 create_parallel_group needs a policy

This tool creates or modifies task scheduling metadata (grouping tasks into parallel execution units), which is a reversible write operation. It does not execute arbitrary code (Execute), delete data (Destructive), handle financial transactions (Financial), or merely retrieve information (Read).

From the tool's definition Tool name 'create_parallel_group' and description indicating it marks multiple tasks as a parallel group for concurrent execution. This creates or modifies task scheduling state without deleting or executing external code.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_parallel_group Rate-limited

create_parallel_group 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": {
    "create_parallel_group": {
      "limits": [
        {
          "counter": "create_parallel_group_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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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 create_parallel_group

What does the create_parallel_group tool do? +

将多个任务标记为并行组。同一并行组内的任务可以同时执行，无需等待其他任务完成。适用于无依赖关系的同层任务。. 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 create_parallel_group? +

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

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

Can I rate-limit create_parallel_group? +

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

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

create_parallel_group 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.