fatsecret_copy_day · Fatsecret MCP: Risk & Policy

WHAT IT DOES

What fatsecret_copy_day does on Fatsecret

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

WHY IT NEEDS A POLICY

Why fatsecret_copy_day needs a policy

This tool performs a reversible creation operation—it duplicates food diary entries from a source date to a destination date. While it modifies the user's food diary, it does not irreversibly delete data (Destructive), execute arbitrary code (Execute), involve financial transactions (Financial), or move money (Financial). The operation is reversible by deleting the copied entries.

From the tool's definition Tool description states 'Copy all food entries from one date to another', which creates new food entry records on a target date without modifying or deleting existing entries.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

fatsecret_copy_day Rate-limited

fatsecret_copy_day 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": {
    "fatsecret_copy_day": {
      "limits": [
        {
          "counter": "fatsecret_copy_day_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 Fatsecret, so you can run agents against it safely.

FAQ

Questions about fatsecret_copy_day

What does the fatsecret_copy_day tool do? +

Copy all food entries from one date to another. Useful for repeating a day. It is categorised as a Write tool in the Fatsecret MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on fatsecret_copy_day? +

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

What risk level is fatsecret_copy_day? +

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

Can I rate-limit fatsecret_copy_day? +

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

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

fatsecret_copy_day is provided by the Fatsecret MCP server (yurzs/fatsecret-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.