export_query · MCP Database Server MCP: Risk & Policy

WHAT IT DOES

What export_query does on MCP Database Server

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

WHY IT NEEDS A POLICY

Why export_query needs a policy

This tool creates new files or data exports (CSV, JSON formats) from query results, which is a reversible write operation. It doesn't execute arbitrary code (Execute), doesn't permanently delete data (Destructive), doesn't move money (Financial), and doesn't merely read data without side effects (Read).

From the tool's definition The tool 'export_query' exports query results to various formats (CSV, JSON), which involves creating and writing output files or data exports. This is a data creation/modification action.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

export_query Rate-limited

export_query 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": {
    "export_query": {
      "limits": [
        {
          "counter": "export_query_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 MCP Database Server, so you can run agents against it safely.

FAQ

Questions about export_query

What does the export_query tool do? +

Export query results to various formats (CSV, JSON). It is categorised as a Write tool in the MCP Database 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 export_query? +

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

What risk level is export_query? +

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

Can I rate-limit export_query? +

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

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

export_query is provided by the MCP Database Server MCP server (msathiyakeerthi/mcp-database-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.