AI agents invoke mac_ssh_check to trigger actions in Claude Pascal MCP Server. 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.
SSH operations can range from simple connectivity checks (Read) to executing remote commands (Execute). Given the server context — which enables compiling, running, and automating desktop applications — 'mac_ssh_check' likely involves establishing or verifying SSH connections that could facilitate remote execution. The empty description lowers confidence.
From the tool's definition Tool name 'mac_ssh_check' suggests SSH connectivity checking on macOS; description is empty and uninformative.
Documented attack patterns abuse exactly the kind of access mac_ssh_check gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Claude Pascal MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for mac_ssh_check:
{
"version": "1",
"default": "deny",
"tools": {
"mac_ssh_check": {
"limits": [
{
"counter": "mac_ssh_check_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}mac_ssh_check 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.
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mac_ssh_check. It is categorised as a Execute tool in the Claude Pascal MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Claude Pascal MCP Server MCP server in PolicyLayer and add a rule for mac_ssh_check: 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 Claude Pascal MCP Server. Nothing to install.
mac_ssh_check is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the mac_ssh_check 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 mac_ssh_check. 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.
mac_ssh_check is provided by the Claude Pascal MCP Server MCP server (tina4stack/claude-pascal-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Claude Pascal 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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53 Claude Pascal MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.