add_or_update_meal_item · MCP Logger MCP: Risk & Policy

WHAT IT DOES

What add_or_update_meal_item does on MCP Logger

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

WHY IT NEEDS A POLICY

Why add_or_update_meal_item needs a policy

This tool creates new meal item records or modifies existing ones reversibly within a local fitness tracking database. The operation is non-destructive (data can be corrected or replaced), affects only the user's personal nutrition log, and has no external side effects or financial implications. Severity is low because misuse affects only personal data with no blast radius to other systems or users.

From the tool's definition Tool name 'add_or_update_meal_item' and description 'Add or update a food item within a meal' indicate creation or modification of nutrition data. The verbs 'add' and 'update' are characteristic of Write operations.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

add_or_update_meal_item Rate-limited

add_or_update_meal_item 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": {
    "add_or_update_meal_item": {
      "limits": [
        {
          "counter": "add_or_update_meal_item_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 Logger, so you can run agents against it safely.

FAQ

Questions about add_or_update_meal_item

What does the add_or_update_meal_item tool do? +

Add or update a food item within a meal. It is categorised as a Write tool in the MCP Logger MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on add_or_update_meal_item? +

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

What risk level is add_or_update_meal_item? +

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

Can I rate-limit add_or_update_meal_item? +

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

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

add_or_update_meal_item is provided by the MCP Logger MCP server (johnzolton/mcp-logger). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.