set_pattern_enabled · Packmate MCP: Risk & Policy

WHAT IT DOES

What set_pattern_enabled does on Packmate

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

WHY IT NEEDS A POLICY

Why set_pattern_enabled needs a policy

This tool creates or modifies data (pattern enabled/disabled state) in a reversible manner. It does not delete data (Destructive), execute code (Execute), or move money (Financial). While the action affects pattern behavior, the change is reversible by toggling the flag back, placing it in the Write category.

From the tool's definition Tool description states 'Enable or disable a pattern' — this modifies the state of an existing pattern reversibly without deletion or destruction.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_pattern_enabled Rate-limited

set_pattern_enabled 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": {
    "set_pattern_enabled": {
      "limits": [
        {
          "counter": "set_pattern_enabled_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 Packmate, so you can run agents against it safely.

FAQ

Questions about set_pattern_enabled

What does the set_pattern_enabled tool do? +

Enable or disable a pattern without deleting it. It is categorised as a Write tool in the Packmate MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on set_pattern_enabled? +

Register the Packmate MCP server in PolicyLayer and add a rule for set_pattern_enabled: 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 Packmate. Nothing to install.

What risk level is set_pattern_enabled? +

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

Can I rate-limit set_pattern_enabled? +

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

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

set_pattern_enabled is provided by the Packmate MCP server (umbra2728/packmate-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.