make_query_private · Dune MCP: Risk & Policy

WHAT IT DOES

What make_query_private does on Dune

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

WHY IT NEEDS A POLICY

Why make_query_private needs a policy

This tool modifies the visibility/access control of an existing query, which is a reversible write operation (the query can presumably be made public again). It does not delete data or execute code, but it does change access permissions which could disrupt collaborators or dependent workflows if misused.

From the tool's definition Make a query private, restricting access to the owner.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

make_query_private Rate-limited

make_query_private 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": {
    "make_query_private": {
      "limits": [
        {
          "counter": "make_query_private_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 Dune, so you can run agents against it safely.

FAQ

Questions about make_query_private

What does the make_query_private tool do? +

Make a query private, restricting access to the owner. It is categorised as a Write tool in the Dune MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on make_query_private? +

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

What risk level is make_query_private? +

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

Can I rate-limit make_query_private? +

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

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

make_query_private is provided by the Dune MCP server (mwamedacen/dune-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.