generate_meal_plan · NutriBalance MCP: Risk & Policy

WHAT IT DOES

What generate_meal_plan does on NutriBalance

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

WHY IT NEEDS A POLICY

Why generate_meal_plan needs a policy

This tool creates new data (a meal plan) that is reversible—the user can discard or modify it without consequence. It has no destructive effects, does not execute arbitrary code, involves no financial transactions, and does not permanently alter stored data. The output is advisory nutritional guidance, not a command that triggers external operations.

From the tool's definition Tool generates and creates a meal plan artifact (breakfast, lunch, snack, dinner schedule) tailored to user input. The description uses the action verb 'generate' which involves creating new structured data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

generate_meal_plan Rate-limited

generate_meal_plan 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": {
    "generate_meal_plan": {
      "limits": [
        {
          "counter": "generate_meal_plan_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 NutriBalance, so you can run agents against it safely.

FAQ

Questions about generate_meal_plan

What does the generate_meal_plan tool do? +

Generate a full day meal plan (breakfast, lunch, snack, dinner) tailored to the user. It is categorised as a Write tool in the NutriBalance MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on generate_meal_plan? +

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

What risk level is generate_meal_plan? +

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

Can I rate-limit generate_meal_plan? +

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

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

generate_meal_plan is provided by the NutriBalance MCP server (thenutritrackerapp-creator/nutribalance-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.