create_chart_auto · Superset MCP Server MCP: Risk & Policy

WHAT IT DOES

What create_chart_auto does on Superset MCP Server

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

WHY IT NEEDS A POLICY

Why create_chart_auto needs a policy

The tool creates new chart objects in Superset, which is a reversible write operation. It doesn't execute arbitrary SQL queries (that's execute_sql), doesn't delete data (would be Destructive), and doesn't involve financial transactions. While it accepts auto-detected parameters based on dataset schema analysis, the core function is chart creation.

From the tool's definition Tool name includes 'create_chart' and description explicitly states 'Create a chart' with capability to automatically determine and configure visualization parameters. This is a creation operation that modifies dashboard state by adding new chart objects.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_chart_auto Rate-limited

create_chart_auto 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_chart_auto": {
      "limits": [
        {
          "counter": "create_chart_auto_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 Superset MCP Server, so you can run agents against it safely.

FAQ

Questions about create_chart_auto

What does the create_chart_auto tool do? +

Create a chart with AUTO-DETECTED visualization configuration. Analyzes dataset schema to automatically determine X-axis, metrics, and dimensions. Use this when you want the chart to display data immediately without manual configuration. You can still override any auto-detected values. It is categorised as a Write tool in the Superset 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 create_chart_auto? +

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

What risk level is create_chart_auto? +

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

Can I rate-limit create_chart_auto? +

Yes. Add a rate_limit block to the create_chart_auto 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_auto completely? +

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

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