make_query_public · Dune MCP: Risk & Policy

WHAT IT DOES

What make_query_public does on Dune

AI agents use make_query_public 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_public needs a policy

This tool modifies the visibility/access control of an existing query from private to public. It's a reversible write operation (visibility can presumably be changed back), but it does have a meaningful security implication — exposing potentially sensitive blockchain analytics queries to the public. It does not delete data or execute code, so Write is the most appropriate category.

From the tool's definition Make a private query public, allowing broader access.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

make_query_public Rate-limited

make_query_public 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_public": {
      "limits": [
        {
          "counter": "make_query_public_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_public

What does the make_query_public tool do? +

Make a private query public, allowing broader access. 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_public? +

Register the Dune MCP server in PolicyLayer and add a rule for make_query_public: 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_public? +

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

Can I rate-limit make_query_public? +

Yes. Add a rate_limit block to the make_query_public 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_public completely? +

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

make_query_public 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.