set_usg_connection · AF_ MCP: Risk & Policy

WHAT IT DOES

What set_usg_connection does on AF_MCP

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

WHY IT NEEDS A POLICY

Why set_usg_connection needs a policy

The tool creates or modifies connection account data persistently in the system. While it involves security credentials, it is not destructive (data can be updated/removed), nor does it execute operations or move money. It's a Write operation on authentication/connection configuration.

From the tool's definition Tool description states it 'persists USG6000F connection account' (通过聊天输入并持久化 USG6000F 连接账号) and 'saves connection information' (保存连接信息后). This is a reversible modification of stored connection credentials and configuration state.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_usg_connection Rate-limited

set_usg_connection 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": {
    "set_usg_connection": {
      "limits": [
        {
          "counter": "set_usg_connection_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 AF_MCP, so you can run agents against it safely.

FAQ

Questions about set_usg_connection

What does the set_usg_connection tool do? +

通过聊天输入并持久化 USG6000F 连接账号；保存连接信息后，调用真实设备 API 前仍需先执行 usg_login。. It is categorised as a Write tool in the AF_MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on set_usg_connection? +

Register the AF_ MCP server in PolicyLayer and add a rule for set_usg_connection: 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 AF_MCP. Nothing to install.

What risk level is set_usg_connection? +

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

Can I rate-limit set_usg_connection? +

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

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

set_usg_connection is provided by the AF_ MCP server (xiaqijun/af_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.