bbs_disconnect · Mcp Bbs MCP: Risk & Policy

WHAT IT DOES

What bbs_disconnect does on Mcp Bbs

AI agents invoke bbs_disconnect to trigger actions in Mcp Bbs. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why bbs_disconnect needs a policy

Disconnecting from a BBS terminates the active connection session. This is an external operation that affects the state of a network connection. It's not purely read, write, or destructive (no data is deleted), but it does trigger an external operation (session teardown).

From the tool's definition 'Disconnect from the BBS' — terminates an active telnet/network session

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

bbs_disconnect Rate-limited

bbs_disconnect stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "bbs_disconnect": {
      "limits": [
        {
          "counter": "bbs_disconnect_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Mcp Bbs, so you can run agents against it safely.

FAQ

Questions about bbs_disconnect

What does the bbs_disconnect tool do? +

Disconnect from the BBS. It is categorised as a Execute tool in the Mcp Bbs MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on bbs_disconnect? +

Register the Mcp Bbs MCP server in PolicyLayer and add a rule for bbs_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 Mcp Bbs. Nothing to install.

What risk level is bbs_disconnect? +

bbs_disconnect is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit bbs_disconnect? +

Yes. Add a rate_limit block to the bbs_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 bbs_disconnect completely? +

Set action: deny in the PolicyLayer policy for bbs_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 bbs_disconnect? +

bbs_disconnect is provided by the Mcp Bbs MCP server (livingstaccato/mcp-bbs). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.