create-wordcloud · Quickchart MCP: Risk & Policy

WHAT IT DOES

What create-wordcloud does on Quickchart

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

WHY IT NEEDS A POLICY

Why create-wordcloud needs a policy

The tool creates new visualization data (word cloud images) and can persist them to files. This is a reversible write operation—the generated files can be deleted or recreated without permanent damage. There is no destructive capability, no code execution, no financial impact, and no data retrieval beyond generating new outputs.

From the tool's definition Tool description states 'save word cloud image to file' and 'get word cloud image URL', indicating creation and storage of new data artifacts.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create-wordcloud Rate-limited

create-wordcloud 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-wordcloud": {
      "limits": [
        {
          "counter": "create-wordcloud_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 Quickchart, so you can run agents against it safely.

FAQ

Questions about create-wordcloud

What does the create-wordcloud tool do? +

Create a word cloud using QuickChart.io - get word cloud image URL or save word cloud image to file. It is categorised as a Write tool in the Quickchart 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-wordcloud? +

Register the Quickchart MCP server in PolicyLayer and add a rule for create-wordcloud: 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 Quickchart. Nothing to install.

What risk level is create-wordcloud? +

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

Can I rate-limit create-wordcloud? +

Yes. Add a rate_limit block to the create-wordcloud 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-wordcloud completely? +

Set action: deny in the PolicyLayer policy for create-wordcloud. 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-wordcloud? +

create-wordcloud is provided by the Quickchart MCP server (takanarishimbo/quickchart-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.