AI agents call ssh_disconnect as a supporting operation in SSH MCP Server workflows.
Disconnecting an SSH session is a connection teardown operation. It does not read, write, execute commands, destroy data, or involve finances. It simply ends an established TCP/SSH session, which is reversible (you can reconnect). The closest category is Other, as it is a session-management action that doesn't fit any of the primary risk categories. Severity is low because misuse merely drops a connection.
From the tool's definition 'Close SSH connection' — terminates a network session, no data deleted, no code executed, no financial action
Documented attack patterns abuse exactly the kind of access ssh_disconnect gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and SSH MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for ssh_disconnect:
{
"version": "1",
"default": "deny",
"tools": {
"ssh_disconnect": {
"limits": [
{
"counter": "ssh_disconnect_rate",
"window": "minute",
"max": 60,
"scope": "grant"
}
]
}
}
}ssh_disconnect gets a rate cap, and everything else on the server is denied unless you say otherwise.
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Close SSH connection. It is categorised as a Other tool in the SSH MCP Server MCP Server, which means it performs auxiliary operations.
Register the SSH MCP Server MCP server in PolicyLayer and add a rule for ssh_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 SSH MCP Server. Nothing to install.
ssh_disconnect is a Other tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the ssh_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 ssh_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.
ssh_disconnect is provided by the SSH MCP Server MCP server (mertcankaraoglu/ssh-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from SSH MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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3 SSH MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.