cronometer_add_custom_food · Fitness MCP: Risk & Policy

WHAT IT DOES

What cronometer_add_custom_food does on FitnessMCP

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

WHY IT NEEDS A POLICY

Why cronometer_add_custom_food needs a policy

The tool creates or modifies user nutrition data (custom food entry) within the Cronometer service. This is reversible (can be deleted or edited later) and represents data creation rather than destruction. While the description is empty, the clear action verb 'add' combined with sibling context provides high confidence.

From the tool's definition Tool name 'cronometer_add_custom_food' contains 'add' action, indicating creation of a new food entry in Cronometer nutrition tracking.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

cronometer_add_custom_food Rate-limited

cronometer_add_custom_food 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": {
    "cronometer_add_custom_food": {
      "limits": [
        {
          "counter": "cronometer_add_custom_food_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 FitnessMCP, so you can run agents against it safely.

FAQ

Questions about cronometer_add_custom_food

What does the cronometer_add_custom_food tool do? +

cronometer_add_custom_food. It is categorised as a Write tool in the FitnessMCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on cronometer_add_custom_food? +

Register the Fitness MCP server in PolicyLayer and add a rule for cronometer_add_custom_food: 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 FitnessMCP. Nothing to install.

What risk level is cronometer_add_custom_food? +

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

Can I rate-limit cronometer_add_custom_food? +

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

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

cronometer_add_custom_food is provided by the Fitness MCP server (senoj100-alt/fitnessmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.