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

WHAT IT DOES

What add_dependency does on Agent-Comm-Hub

AI agents use add_dependency 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 add_dependency needs a policy

This tool creates or modifies data relationships (task dependencies) in a workflow system. It is reversible—dependencies can presumably be removed or modified later. It does not delete data (Destructive), execute arbitrary code (Execute), move money (Financial), or retrieve without side effects (Read). The automatic state change to 'waiting' represents a workflow modification, not an irreversible deletion.

From the tool's definition Tool name 'add_dependency' and description indicate it modifies task workflow state: 'adds task dependency relationships' (添加任务依赖关系), 'downstream tasks must wait for upstream completion' (下游任务必须等上游任务完成后才能开始), and 'downstream task automatically enters waiting…

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

add_dependency Rate-limited

add_dependency 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": {
    "add_dependency": {
      "limits": [
        {
          "counter": "add_dependency_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 add_dependency

What does the add_dependency tool do? +

添加任务依赖关系。下游任务必须等上游任务完成后才能开始。自动进行环检测。添加后下游任务自动进入等待状态。. 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 add_dependency? +

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

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

Can I rate-limit add_dependency? +

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

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

add_dependency 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.