delete_workout

THE RISK

Critical Risk

Why delete_workout needs a policy

Deletion of workout data cannot be undone and removes user-created content permanently. While not as critical as financial or system-level destruction, accidental or malicious deletion of user fitness data represents a significant loss. This is classified as Destructive rather than Write because the operation is irreversible and the effect is permanent data loss.

From the tool's definition Tool name is 'delete_workout' and description states 'Delete a workout from Garmin Connect.' The verb 'delete' indicates irreversible removal of data.

Documented attack patterns abuse exactly the kind of access delete_workout gives an agent:

POLICY

How to control delete_workout

PolicyLayer is an MCP gateway — it sits between your AI agents and Garmin Workouts MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for delete_workout:

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "delete_workout"
  ]
}

delete_workout disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.

Create a free account and register Garmin Workouts MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

RESTRICT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Garmin Workouts MCP Server tools

Write schedule_workout schedule_workout Write upload_workout upload_workout Read get_activity Get details of a specific activity by its ID. An activity represents a completed run, ride Read get_activity_weather Get weather information for a specific activity. Read get_calendar get_calendar Read get_workout Get details of a specific workout by its ID. Read list_activities list_activities Read list_workouts List all workouts available on Garmin Connect.

All 10 Garmin Workouts MCP Server tools →

Destructive tools on other servers

Android Forensics ADB MCP Server create_full_backup 0xarchive web3_revoke_key Frida Game Hacking MCP clear_scan cPanel MCP Server clear_spam_box

Go deeper

Critical-risk tools in Garmin Workouts MCP Server → Every critical-risk tool this server exposes, in one view.
All critical-risk MCP tools → Every critical-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Blast radius → How much damage one compromised or confused agent can do — and how to bound it.
Tool call approval → Approval gates on individual tool calls: auto-allow, prompt, or deny.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about delete_workout

What does the delete_workout tool do? +

Delete a workout from Garmin Connect. It is categorised as a Destructive tool in the Garmin Workouts MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on delete_workout? +

Register the Garmin Workouts MCP Server MCP server in PolicyLayer and add a rule for delete_workout: 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 Garmin Workouts MCP Server. Nothing to install.

What risk level is delete_workout? +

delete_workout is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit delete_workout? +

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

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

delete_workout is provided by the Garmin Workouts MCP Server MCP server (st3v/garmin-workouts-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Garmin Workouts MCP Server tool call.

Start from Garmin Workouts MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →