link_claude_desktop · Metis Public Health MCP: Risk & Policy

WHAT IT DOES

What link_claude_desktop does on Metis Public Health

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

WHY IT NEEDS A POLICY

Why link_claude_desktop needs a policy

This tool writes/creates a new entry in Claude Desktop's project list by registering a Metis project. It is a reversible write operation (entries can presumably be removed), with medium severity since it modifies application configuration data but does not execute code or cause irreversible harm.

From the tool's definition Register a Metis project in Claude Desktop's project list

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

link_claude_desktop Rate-limited

link_claude_desktop 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": {
    "link_claude_desktop": {
      "limits": [
        {
          "counter": "link_claude_desktop_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 Metis Public Health, so you can run agents against it safely.

FAQ

Questions about link_claude_desktop

What does the link_claude_desktop tool do? +

Register a Metis project in Claude Desktop's project list. It is categorised as a Write tool in the Metis Public Health MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on link_claude_desktop? +

Register the Metis Public Health MCP server in PolicyLayer and add a rule for link_claude_desktop: 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 Metis Public Health. Nothing to install.

What risk level is link_claude_desktop? +

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

Can I rate-limit link_claude_desktop? +

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

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

link_claude_desktop is provided by the Metis Public Health MCP server (sveritg/metis_ph). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.