set_card_color · Framedeck MCP: Risk & Policy

WHAT IT DOES

What set_card_color does on Framedeck

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

WHY IT NEEDS A POLICY

Why set_card_color needs a policy

The tool creates or modifies data (card color attribute) in a reversible manner. It does not delete, execute code, trigger financial transactions, or irreversibly alter data. This is a clear Write operation with low severity since color changes have minimal blast radius and can be easily undone.

From the tool's definition Tool is named 'set_card_color' with description 'Set or clear the color of a card for visual categorization' — this modifies card metadata (color property) reversibly without deleting data or executing external operations.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_card_color Rate-limited

set_card_color 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": {
    "set_card_color": {
      "limits": [
        {
          "counter": "set_card_color_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 Framedeck, so you can run agents against it safely.

FAQ

Questions about set_card_color

What does the set_card_color tool do? +

Set or clear the color of a card for visual categorization. It is categorised as a Write tool in the Framedeck MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on set_card_color? +

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

What risk level is set_card_color? +

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

Can I rate-limit set_card_color? +

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

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

set_card_color is provided by the Framedeck MCP server (lukaris/framedeck-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.