send_key_sequence · Mcp Serial Hid Kvm MCP: Risk & Policy

WHAT IT DOES

What send_key_sequence does on Mcp Serial Hid Kvm

AI agents invoke send_key_sequence to trigger actions in Mcp Serial Hid Kvm. 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 send_key_sequence needs a policy

This tool sends keyboard input sequences to a physical PC via a KVM server. It can trigger arbitrary operations on the remote system (launching applications, entering commands, modifying files, etc.) depending on the key sequences sent. The effect is entirely dependent on the context and arguments, making it Execute.

From the tool's definition Send a sequence of key steps with optional per-step delays. Useful for complex keyboard operations.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

send_key_sequence Rate-limited

send_key_sequence 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": {
    "send_key_sequence": {
      "limits": [
        {
          "counter": "send_key_sequence_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 Serial Hid Kvm, so you can run agents against it safely.

FAQ

Questions about send_key_sequence

What does the send_key_sequence tool do? +

Send a sequence of key steps with optional per-step delays. Useful for complex keyboard operations. It is categorised as a Execute tool in the Mcp Serial Hid Kvm MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on send_key_sequence? +

Register the Mcp Serial Hid Kvm MCP server in PolicyLayer and add a rule for send_key_sequence: 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 Serial Hid Kvm. Nothing to install.

What risk level is send_key_sequence? +

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

Can I rate-limit send_key_sequence? +

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

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

send_key_sequence is provided by the Mcp Serial Hid Kvm MCP server (sunasaji/mcp-serial-hid-kvm). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.