paste_lines · Cut-Copy-Paste Clipboard Server MCP

WHAT IT DOES

What paste_lines does on Cut-Copy-Paste Clipboard Server

AI agents use paste_lines to create or update resources in Cut-Copy-Paste Clipboard Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Cut-Copy-Paste Clipboard Server environment.

WHY IT NEEDS A POLICY

Why paste_lines needs a policy

paste_lines writes clipboard content into one or more file locations, which is a reversible write operation (supported by the undo_last_paste sibling tool). However, it has high severity because an AI agent could paste content into multiple files simultaneously, potentially overwriting or corrupting code across a codebase.

From the tool's definition 'Paste clipboard content to one or more locations' — writes/inserts content into files at specified locations

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

paste_lines Rate-limited

paste_lines 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": {
    "paste_lines": {
      "limits": [
        {
          "counter": "paste_lines_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 Cut-Copy-Paste Clipboard Server, so you can run agents against it safely.

FAQ

Questions about paste_lines

What does the paste_lines tool do? +

Paste clipboard content to one or more locations. It is categorised as a Write tool in the Cut-Copy-Paste Clipboard 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 paste_lines? +

Register the Cut-Copy-Paste Clipboard Server MCP server in PolicyLayer and add a rule for paste_lines: 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 Cut-Copy-Paste Clipboard Server. Nothing to install.

What risk level is paste_lines? +

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

Can I rate-limit paste_lines? +

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

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

paste_lines is provided by the Cut-Copy-Paste Clipboard Server MCP server (pr0j3c7t0dd-ltd/cut-copy-paste-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.