Medium Risk

create_chart

Create a new chart in Superset. IMPORTANT: You must first call

How to control create_chart ↓

What create_chart does on Superset

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

Medium Risk

Why create_chart needs a policy

This tool creates a new chart object in Superset, which is a reversible write operation (charts can be deleted). It does not read sensitive data without modification, execute arbitrary code, destroy data irreversibly, or move money.

From the tool's definition Tool name 'create_chart' and description 'Create a new chart in Superset' indicate creation of a new resource/object.

Documented attack patterns abuse exactly the kind of access create_chart gives an agent:

How to control create_chart

PolicyLayer is an MCP gateway — it sits between your AI agents and Superset, and nothing reaches the server without passing your rules. This is the rule we recommend for create_chart:

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "create_chart": {
      "limits": [
        {
          "counter": "create_chart_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

create_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.

  1. Create a free account and register Superset — nothing to install.
  2. Add this policy — paste it, or build it visually.
  3. Point your MCP client (Claude, Cursor, anything) at your gateway URL.
LIMIT THIS TOOL →

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Related tools and policies

Go deeper

Questions about create_chart

What does the create_chart tool do? +

Create a new chart in Superset. IMPORTANT: You must first call. It is categorised as a Write tool in the Superset 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_chart? +

Register the Superset MCP server in PolicyLayer and add a rule for create_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 Superset. Nothing to install.

What risk level is create_chart? +

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

Can I rate-limit create_chart? +

Yes. Add a rate_limit block to the create_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 create_chart completely? +

Set action: deny in the PolicyLayer policy for create_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 create_chart? +

create_chart is provided by the Superset MCP server (winding2020/superset-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Superset tool call.

Start from Superset, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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31 Superset tools catalogued and risk-classified — across an index of 43,000+ MCP servers.

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