AI agents use disconnect to create or update resources in Mcp Ssh — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Mcp Ssh environment.
Disconnecting a session terminates an active connection but is reversible — the user can reconnect. It modifies state (closes the session) without permanently deleting data, so Write is appropriate. Misuse could interrupt ongoing operations, giving it medium severity.
From the tool's definition Disconnects an active SSH connection
Documented attack patterns abuse exactly the kind of access disconnect gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Ssh, and nothing reaches the server without passing your rules. This is the rule we recommend for disconnect:
{
"version": "1",
"default": "deny",
"tools": {
"disconnect": {
"limits": [
{
"counter": "disconnect_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}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.
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Disconnects an active SSH connection. It is categorised as a Write tool in the Mcp Ssh MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Mcp Ssh 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 Mcp Ssh. Nothing to install.
disconnect 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 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. 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 is provided by the Mcp Ssh MCP server (shuakami/mcp-ssh). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 23 Mcp Ssh tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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23 Mcp Ssh tools catalogued and risk-classified — across an index of 42,500+ MCP servers.