fizzy_create_card · Fizzy MCP Server MCP: Risk & Policy

WHAT IT DOES

What fizzy_create_card does on Fizzy MCP Server

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

WHY IT NEEDS A POLICY

Why fizzy_create_card needs a policy

Creating a new card is a reversible Write operation that adds data to a board without executing external code, triggering financial transactions, or permanently destroying data. The severity is medium because misuse could create unwanted clutter or interfere with task management workflows, but the action is reversible (cards can be deleted).

From the tool's definition Tool name is 'fizzy_create_card' and description states it will 'Create a new Fizzy card on a board.' This is a data creation operation that modifies state within the task management system.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

fizzy_create_card Rate-limited

fizzy_create_card 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_card": {
      "limits": [
        {
          "counter": "fizzy_create_card_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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

FAQ

Questions about fizzy_create_card

What does the fizzy_create_card tool do? +

Create a new Fizzy card on a board. It is categorised as a Write tool in the Fizzy MCP Server 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_card? +

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

What risk level is fizzy_create_card? +

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

Can I rate-limit fizzy_create_card? +

Yes. Add a rate_limit block to the fizzy_create_card 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_card completely? +

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

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