intervals_duplicate_event · Fitness MCP: Risk & Policy

WHAT IT DOES

What intervals_duplicate_event does on FitnessMCP

AI agents use intervals_duplicate_event 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 intervals_duplicate_event needs a policy

Based on the name, this tool likely duplicates (creates a copy of) an existing event in Intervals.icu, which is a Write operation. The empty description lowers confidence significantly. Duplication creates new data reversibly, so Write is the most appropriate category. Severity is medium as misuse could create unwanted duplicate events in a user's training calendar.

From the tool's definition Tool name 'intervals_duplicate_event' suggests copying/duplicating an event in Intervals.icu; description is empty and uninformative.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

intervals_duplicate_event Rate-limited

intervals_duplicate_event 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": {
    "intervals_duplicate_event": {
      "limits": [
        {
          "counter": "intervals_duplicate_event_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 intervals_duplicate_event

What does the intervals_duplicate_event tool do? +

intervals_duplicate_event. 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 intervals_duplicate_event? +

Register the Fitness MCP server in PolicyLayer and add a rule for intervals_duplicate_event: 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 intervals_duplicate_event? +

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

Can I rate-limit intervals_duplicate_event? +

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

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

intervals_duplicate_event 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.