create_routine · Hevy MCP: Risk & Policy

WHAT IT DOES

What create_routine does on Hevy MCP

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

WHY IT NEEDS A POLICY

Why create_routine needs a policy

This tool creates new workout routine data in the user's Hevy account. While creation is reversible (routines can be deleted or modified), it modifies user data persistently. This is a Write operation rather than Read (no data retrieval), Execute (no code/command execution), or Destructive (data is not irreversibly deleted).

From the tool's definition Tool name 'create_routine' indicates creation of a new fitness routine in the Hevy workout tracking app. Tool description is empty, but the server description states the tool 'enables...managing routines' and sibling tools include 'update_routine' and…

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_routine Rate-limited

create_routine 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": {
    "create_routine": {
      "limits": [
        {
          "counter": "create_routine_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 Hevy MCP, so you can run agents against it safely.

FAQ

Questions about create_routine

What does the create_routine tool do? +

create_routine. It is categorised as a Write tool in the Hevy 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 create_routine? +

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

What risk level is create_routine? +

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

Can I rate-limit create_routine? +

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

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

create_routine is provided by the Hevy MCP server (zachsai/hevy-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.