get_query_best_practices

THE RISK

Low Risk

Why get_query_best_practices needs a policy

This tool retrieves reference information about query best practices—it is a read-only lookup function that returns documentation or guidance. It does not execute queries, modify data, delete anything, move money, or trigger external operations. There is no blast radius from an AI agent misusing this tool, as it only provides informational content.

From the tool's definition Tool name is 'get_query_best_practices' and description states 'Get NGSIEM query writing best practices for optimal performance.' The verb 'Get' and the purpose (retrieving documentation/guidance) indicate data retrieval with no side effects.

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

POLICY

How to control get_query_best_practices

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

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "get_query_best_practices": {}
  }
}

get_query_best_practices is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

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

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EXPLORE

Related tools and policies

More NGSIEM MCP Server tools

Execute stop_search Cancel a running NGSIEM search. Execute search_and_wait Execute a NGSIEM search and automatically wait for results (blocking). Read build_query Build a NGSIEM query from a template with parameters. Read get_available_repositories Get the list of NGSIEM repositories configured in this environment. Read get_query_reference Get NGSIEM query language reference. Read get_repo_fieldset MANDATORY FIRST STEP: Discover ALL available fields in a NGSIEM repository. Read get_search_status Check the status of a running NGSIEM search and retrieve results if complete. Read list_templates List available pre-built NGSIEM query templates for security operations.

All 10 NGSIEM MCP Server tools →

Read tools on other servers

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about get_query_best_practices

What does the get_query_best_practices tool do? +

Get NGSIEM query writing best practices for optimal performance. It is categorised as a Read tool in the NGSIEM MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_query_best_practices? +

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

What risk level is get_query_best_practices? +

get_query_best_practices is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit get_query_best_practices? +

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

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

get_query_best_practices is provided by the NGSIEM MCP Server MCP server (rodkinal/cs-ngsiem-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every NGSIEM MCP Server tool call.

Start from NGSIEM MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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