fizzy_create_step · Fizzy Do MCP: Risk & Policy

WHAT IT DOES

What fizzy_create_step does on Fizzy Do MCP

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

WHY IT NEEDS A POLICY

Why fizzy_create_step needs a policy

This tool creates a new checklist step on an existing card in a task management system. Creation of data is a Write operation. The action is reversible (steps can be deleted), so it does not rise to Destructive. Severity is medium because miscreation of many checklist items could clutter a card and disrupt workflow, but the impact is contained to a single card and easily correctable.

From the tool's definition Tool name 'fizzy_create_step' and description 'Create a new step (checklist item) on a card' indicate creation of new data (a checklist item) that is reversible.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

fizzy_create_step Rate-limited

fizzy_create_step 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": {
    "fizzy_create_step": {
      "limits": [
        {
          "counter": "fizzy_create_step_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 Fizzy Do MCP, so you can run agents against it safely.

FAQ

Questions about fizzy_create_step

What does the fizzy_create_step tool do? +

Create a new step (checklist item) on a card. It is categorised as a Write tool in the Fizzy Do 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 fizzy_create_step? +

Register the Fizzy Do MCP server in PolicyLayer and add a rule for fizzy_create_step: 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 Fizzy Do MCP. Nothing to install.

What risk level is fizzy_create_step? +

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

Can I rate-limit fizzy_create_step? +

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

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

fizzy_create_step is provided by the Fizzy Do MCP server (ryanyogan/fizzy-do-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.