update_mealplan_rule · Mcp Mealie MCP: Risk & Policy

WHAT IT DOES

What update_mealplan_rule does on Mcp Mealie

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

WHY IT NEEDS A POLICY

Why update_mealplan_rule needs a policy

This tool modifies meal plan rules but does not delete or destroy data (ruling out Destructive), does not execute arbitrary code or scripts (ruling out Execute), and does not move money or create financial obligations (ruling out Financial). It is a standard Write operation that updates configuration data.

From the tool's definition Tool name 'update_mealplan_rule' and description 'Patch a meal-plan rule' indicate modification of existing data. The HTTP PATCH method is explicitly referenced, which is a reversible update operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_mealplan_rule Rate-limited

update_mealplan_rule 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": {
    "update_mealplan_rule": {
      "limits": [
        {
          "counter": "update_mealplan_rule_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 Mealie, so you can run agents against it safely.

FAQ

Questions about update_mealplan_rule

What does the update_mealplan_rule tool do? +

Patch a meal-plan rule. It is categorised as a Write tool in the Mcp Mealie MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on update_mealplan_rule? +

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

What risk level is update_mealplan_rule? +

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

Can I rate-limit update_mealplan_rule? +

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

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

update_mealplan_rule is provided by the Mcp Mealie MCP server (obrien-matthew/mcp-mealie). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.