clip_cmd · Mcp Clipstream MCP: Risk & Policy

WHAT IT DOES

What clip_cmd does on Mcp Clipstream

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

WHY IT NEEDS A POLICY

Why clip_cmd needs a policy

The tool sends a shell command string to a clipboard buffer (the clipstream TUI buffer). This is a Write operation: it creates/modifies data in the buffer. It does not execute the shell command itself — it only copies the text representation of a command. However, there is moderate risk if an AI agent misuses it to stage malicious commands in the clipboard, which a user might then paste and execute.

From the tool's definition 'Send a shell command to the clipstream buffer' — writes content to a clipboard/buffer

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

clip_cmd Rate-limited

clip_cmd 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": {
    "clip_cmd": {
      "limits": [
        {
          "counter": "clip_cmd_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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 Clipstream, so you can run agents against it safely.

FAQ

Questions about clip_cmd

What does the clip_cmd tool do? +

Send a shell command to the clipstream buffer. It is categorised as a Write tool in the Mcp Clipstream MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on clip_cmd? +

Register the Mcp Clipstream MCP server in PolicyLayer and add a rule for clip_cmd: 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 Clipstream. Nothing to install.

What risk level is clip_cmd? +

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

Can I rate-limit clip_cmd? +

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

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

clip_cmd is provided by the Mcp Clipstream MCP server (shamis6ali/mcp-clipstream). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.