run-query · Garmin MCP: Risk & Policy

WHAT IT DOES

What run-query does on Garmin

AI agents invoke run-query to trigger actions in Garmin. 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 run-query needs a policy

The tool executes SQL queries against a local SQLite database. Although the description says 'SELECT query', the tool name 'run-query' implies execution of arbitrary SQL. If the enforcement is only by convention/description and not technically enforced, a malicious or mistaken query could include DROP, DELETE, or UPDATE statements.

From the tool's definition 'Runs a SELECT query against the database' — while described as SELECT-only, the tool name 'run-query' with arbitrary SQL input could permit injection of destructive statements; the description does not enforce SELECT-only at a technical level

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

run-query Rate-limited

run-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": {
    "run-query": {
      "limits": [
        {
          "counter": "run-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 Garmin, so you can run agents against it safely.

FAQ

Questions about run-query

What does the run-query tool do? +

Runs a SELECT query against the database. It is categorised as a Execute tool in the Garmin MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on run-query? +

Register the Garmin MCP server in PolicyLayer and add a rule for run-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 Garmin. Nothing to install.

What risk level is run-query? +

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

Can I rate-limit run-query? +

Yes. Add a rate_limit block to the run-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 run-query completely? +

Set action: deny in the PolicyLayer policy for run-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 run-query? +

run-query is provided by the Garmin MCP server (vnglst/garmin-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.