AI agents use disconnect_ur to create or update resources in Nonead Universal-Robots MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Nonead Universal-Robots MCP Server environment.
This tool disconnects a robot connection, which is a reversible state change (the robot can be reconnected). It modifies the connection state but does not delete data or execute robot commands. However, disconnecting an active robot mid-operation could disrupt ongoing tasks, hence medium severity.
From the tool's definition 断开与UR机器人的连接 (disconnect from UR robot connection based on user-provided IP)
Documented attack patterns abuse exactly the kind of access disconnect_ur gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Nonead Universal-Robots MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for disconnect_ur:
{
"version": "1",
"default": "deny",
"tools": {
"disconnect_ur": {
"limits": [
{
"counter": "disconnect_ur_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}disconnect_ur 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.
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根据用户提供的IP，断开与UR机器人的连接. It is categorised as a Write tool in the Nonead Universal-Robots MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Nonead Universal-Robots MCP Server MCP server in PolicyLayer and add a rule for disconnect_ur: 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 Nonead Universal-Robots MCP Server. Nothing to install.
disconnect_ur is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the disconnect_ur 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.
Set action: deny in the PolicyLayer policy for disconnect_ur. 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.
disconnect_ur is provided by the Nonead Universal-Robots MCP Server MCP server (nonead/nonead-universal-robots-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Nonead Universal-Robots MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
39 Nonead Universal-Robots MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.