tp_update_nutrition · TrainingPeaks- MCP: Risk & Policy

WHAT IT DOES

What tp_update_nutrition does on TrainingPeaks-MCP

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

WHY IT NEEDS A POLICY

Why tp_update_nutrition needs a policy

The tool creates or modifies nutrition planning data (calories) without deleting or executing external operations. Update operations are reversible and fall under the Write category. Severity is medium because incorrect calorie data could affect a user's training plan, but the blast radius is limited to personal fitness records rather than financial or destructive consequences.

From the tool's definition Tool name contains 'update' and description states 'Update daily planned calories' — this modifies user nutrition data reversibly.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

tp_update_nutrition Rate-limited

tp_update_nutrition 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": {
    "tp_update_nutrition": {
      "limits": [
        {
          "counter": "tp_update_nutrition_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches TrainingPeaks-MCP, so you can run agents against it safely.

FAQ

Questions about tp_update_nutrition

What does the tp_update_nutrition tool do? +

Update daily planned calories. It is categorised as a Write tool in the TrainingPeaks-MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on tp_update_nutrition? +

Register the TrainingPeaks- MCP server in PolicyLayer and add a rule for tp_update_nutrition: 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 TrainingPeaks-MCP. Nothing to install.

What risk level is tp_update_nutrition? +

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

Can I rate-limit tp_update_nutrition? +

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

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

tp_update_nutrition is provided by the TrainingPeaks- MCP server (jamsusmaximus/trainingpeaks-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.