db_sql_query · Skyfly MCP Server MCP: Risk & Policy

WHAT IT DOES

What db_sql_query does on Skyfly MCP Server

AI agents invoke db_sql_query to trigger actions in Skyfly MCP Server. 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.

WHY IT NEEDS A POLICY

Why db_sql_query needs a policy

The name 'db_sql_query' strongly suggests it executes raw SQL queries. In the context of a server with aviation/FAA registry data, arbitrary SQL execution could allow reads, writes, or destructive operations (DROP, DELETE, UPDATE).

From the tool's definition Tool name 'db_sql_query' implies execution of arbitrary SQL queries against a database. Description is empty and uninformative.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

db_sql_query Rate-limited

db_sql_query 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.

View as policy code

policy.json

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

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Skyfly MCP Server, so you can run agents against it safely.

FAQ

Questions about db_sql_query

What does the db_sql_query tool do? +

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

How do I enforce a policy on db_sql_query? +

Register the Skyfly MCP Server MCP server in PolicyLayer and add a rule for db_sql_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 Skyfly MCP Server. Nothing to install.

What risk level is db_sql_query? +

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

Can I rate-limit db_sql_query? +

Yes. Add a rate_limit block to the db_sql_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 db_sql_query completely? +

Set action: deny in the PolicyLayer policy for db_sql_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 db_sql_query? +

db_sql_query is provided by the Skyfly MCP Server MCP server (vog01r/skyfly-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.