fizzy_add_card_reaction · Fizzy Do MCP: Risk & Policy

WHAT IT DOES

What fizzy_add_card_reaction does on Fizzy Do MCP

AI agents use fizzy_add_card_reaction 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_add_card_reaction needs a policy

Adding a reaction modifies card state by creating a new reaction record. This is reversible (reactions can typically be removed) and has no destructive or side effects beyond the intended modification. It falls under Write category rather than Read (active modification) or Execute (no external command execution).

From the tool's definition Tool name 'fizzy_add_card_reaction' and description 'Add a reaction to a card' indicate creation/modification of reaction data on a card resource.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

fizzy_add_card_reaction Rate-limited

fizzy_add_card_reaction 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_add_card_reaction": {
      "limits": [
        {
          "counter": "fizzy_add_card_reaction_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 Do MCP, so you can run agents against it safely.

FAQ

Questions about fizzy_add_card_reaction

What does the fizzy_add_card_reaction tool do? +

Add a reaction to a card. Available emojis: ${REACTION_EMOJIS.join(. 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_add_card_reaction? +

Register the Fizzy Do MCP server in PolicyLayer and add a rule for fizzy_add_card_reaction: 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_add_card_reaction? +

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

Can I rate-limit fizzy_add_card_reaction? +

Yes. Add a rate_limit block to the fizzy_add_card_reaction 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_add_card_reaction completely? +

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

fizzy_add_card_reaction 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.