add_meal · Daily Calorie Tracker MCP Server MCP

WHAT IT DOES

What add_meal does on Daily Calorie Tracker MCP Server

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

WHY IT NEEDS A POLICY

Why add_meal needs a policy

This tool creates new meal records in the database, which is a reversible write operation. Users can add meals and later delete or modify them. The action has no financial impact, does not execute arbitrary code, and does not irreversibly destroy data. The blast radius of misuse is minimal (unwanted meal entries in a personal diet tracker), justifying low severity.

From the tool's definition Tool description states 'Log a meal' and context indicates it 'creates' meal entries in persistent SQLite storage for the Daily Calorie Tracker.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

add_meal Rate-limited

add_meal 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_meal": {
      "limits": [
        {
          "counter": "add_meal_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 Daily Calorie Tracker MCP Server, so you can run agents against it safely.

FAQ

Questions about add_meal

What does the add_meal tool do? +

Log a meal with food items and calories. It is categorised as a Write tool in the Daily Calorie Tracker MCP Server 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_meal? +

Register the Daily Calorie Tracker MCP Server MCP server in PolicyLayer and add a rule for add_meal: 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 Daily Calorie Tracker MCP Server. Nothing to install.

What risk level is add_meal? +

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

Can I rate-limit add_meal? +

Yes. Add a rate_limit block to the add_meal 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_meal completely? +

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

add_meal is provided by the Daily Calorie Tracker MCP Server MCP server (veriteknik/daily-calorie-tracker). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.