ssh_setup_credentials · SSH MCP Server MCP: Risk & Policy

WHAT IT DOES

What ssh_setup_credentials does on SSH MCP Server

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

WHY IT NEEDS A POLICY

Why ssh_setup_credentials needs a policy

This tool stores or modifies SSH credentials, which is a reversible write operation that affects authentication configuration. While it doesn't delete data (thus not Destructive) or execute commands (thus not Execute), it creates or modifies credential material used for system access.

From the tool's definition Tool name 'ssh_setup_credentials' and description 'Setup credentials for a Linux host using GUI prompts' indicate persistent storage or modification of authentication data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

ssh_setup_credentials Rate-limited

ssh_setup_credentials 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": {
    "ssh_setup_credentials": {
      "limits": [
        {
          "counter": "ssh_setup_credentials_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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Instant setup, no code required.

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

FAQ

Questions about ssh_setup_credentials

What does the ssh_setup_credentials tool do? +

Setup credentials for a Linux host using GUI prompts. It is categorised as a Write tool in the SSH 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 ssh_setup_credentials? +

Register the SSH MCP Server MCP server in PolicyLayer and add a rule for ssh_setup_credentials: 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.

What risk level is ssh_setup_credentials? +

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

Can I rate-limit ssh_setup_credentials? +

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

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

ssh_setup_credentials is provided by the SSH MCP Server MCP server (inframcp/ssh-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.