query_external_database

WHAT IT DOES

What query_external_database does on SuperDataAnalysis - DataMaster_MCP

AI agents invoke query_external_database to trigger actions in SuperDataAnalysis - DataMaster_MCP. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

THE RISK

High Risk

Why query_external_database needs a policy

The description is empty, lowering confidence. However, the tool name 'query_external_database' in the context of a server that explicitly provides 'SQL querying' capabilities and has a sibling 'execute_sql' tool suggests this tool executes queries against external databases. Depending on the SQL allowed, it could range from Read to Destructive, but Execute is the most appropriate middle-ground given the ambiguity.

From the tool's definition Tool name 'query_external_database' and server context mentioning 'SQL querying' and sibling tool 'execute_sql'

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

POLICY

How to control query_external_database

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

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "query_external_database": {
      "limits": [
        {
          "counter": "query_external_database_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

query_external_database stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

Create a free account and register SuperDataAnalysis - DataMaster_MCP — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

RATE-LIMIT THIS TOOL →

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EXPLORE

Related tools and policies

More SuperDataAnalysis - DataMaster_MCP tools

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All 14 SuperDataAnalysis - DataMaster_MCP tools →

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Go deeper

High-risk tools in SuperDataAnalysis - DataMaster_MCP → Every high-risk tool this server exposes, in one view.
All high-risk MCP tools → Every high-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Agent sandbox → Bounding what an agent can execute and where the boundary should sit.
Least privilege for MCP → Granting agents the minimum tool surface the task needs.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about query_external_database

What does the query_external_database tool do? +

query_external_database. It is categorised as a Execute tool in the SuperDataAnalysis - DataMaster_MCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on query_external_database? +

Register the SuperDataAnalysis - DataMaster_ MCP server in PolicyLayer and add a rule for query_external_database: 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 SuperDataAnalysis - DataMaster_MCP. Nothing to install.

What risk level is query_external_database? +

query_external_database is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit query_external_database? +

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

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

query_external_database is provided by the SuperDataAnalysis - DataMaster_ MCP server (szqshan/datamaster-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every SuperDataAnalysis - DataMaster_MCP tool call.

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

CHECK YOUR STACK →

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14 SuperDataAnalysis - DataMaster_MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.