disconnect · MongoDB MCP Server MCP: Risk & Policy

WHAT IT DOES

What disconnect does on MongoDB MCP Server

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

WHY IT NEEDS A POLICY

Why disconnect needs a policy

Disconnecting from MongoDB is a reversible state change operation that closes a connection without destroying data. While it affects system state, it is not destructive (data remains intact), not financial, and not code execution. It is most accurately classified as Write because it modifies the connection state, though it could also be considered Other.

From the tool's definition Tool name 'disconnect' and description '断开 MongoDB 连接' (Chinese: 'disconnect MongoDB connection') indicate closing/terminating an active database connection.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

disconnect Rate-limited

disconnect 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": {
    "disconnect": {
      "limits": [
        {
          "counter": "disconnect_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 MongoDB MCP Server, so you can run agents against it safely.

FAQ

Questions about disconnect

What does the disconnect tool do? +

断开 MongoDB 连接. It is categorised as a Write tool in the MongoDB MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on disconnect? +

Register the MongoDB MCP Server MCP server in PolicyLayer and add a rule for disconnect: 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 MongoDB MCP Server. Nothing to install.

What risk level is disconnect? +

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

Can I rate-limit disconnect? +

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

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

disconnect is provided by the MongoDB MCP Server MCP server (linpeibiao/mongodb-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.