generate_word_cloud_chart · Chart MCP Server MCP

WHAT IT DOES

What generate_word_cloud_chart does on Chart MCP Server

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

WHY IT NEEDS A POLICY

Why generate_word_cloud_chart needs a policy

This tool generates word cloud chart visualizations from input data. It creates new artifacts (charts) but these are reversible outputs with no destructive, financial, or execution side effects. No code execution, data deletion, or external operations occur. Classification as Write (creates data reversibly) is appropriate.

From the tool's definition Tool name contains 'generate' and description states '生成优雅的词云图' (generate elegant word cloud chart). The tool creates and produces visual chart output.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

generate_word_cloud_chart Rate-limited

generate_word_cloud_chart 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": {
    "generate_word_cloud_chart": {
      "limits": [
        {
          "counter": "generate_word_cloud_chart_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 Chart MCP Server, so you can run agents against it safely.

FAQ

Questions about generate_word_cloud_chart

What does the generate_word_cloud_chart tool do? +

生成优雅的词云图. It is categorised as a Write tool in the Chart 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 generate_word_cloud_chart? +

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

What risk level is generate_word_cloud_chart? +

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

Can I rate-limit generate_word_cloud_chart? +

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

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

generate_word_cloud_chart is provided by the Chart MCP Server MCP server (qingfeng0512/chart-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.