estimate_query_cost

Estimate execution cost (time, tokens) for all available search methods on a given query. Unlike analyze_query (which extracts entities/complexity), this predicts per-method performance.

SERVEREnhanced Knowledge Graph Memory Server SOURCEdanielsimonjr/memory-mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/danielsimonjr-memory-mcp/estimate-query-cost.md

WHAT IT DOES

What estimate_query_cost does on Enhanced Knowledge Graph Memory Server

AI agents call estimate_query_cost to retrieve information from Enhanced Knowledge Graph Memory Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why estimate_query_cost is rated Low

This is a purely analytical/informational tool that inspects query characteristics and returns performance estimates. It has no side effects, does not execute the actual queries, and does not modify, delete, or create any data. It is read-only introspection of the system's capabilities, placing it firmly in the Read category with low severity.

From the tool's definition Tool name 'estimate_query_cost' and description state it 'predicts per-method performance' and 'estimate execution cost' for search methods.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs estimate_query_cost safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Enhanced Knowledge Graph Memory Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For estimate_query_cost, this is the rule to start with:

estimate_query_cost Allowed

estimate_query_cost is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

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

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Enhanced Knowledge Graph Memory Server, apply this rule, and every estimate_query_cost call is checked against it from then on.

FAQ

Questions about estimate_query_cost

What does the estimate_query_cost tool do? +

Estimate execution cost (time, tokens) for all available search methods on a given query. Unlike analyze_query (which extracts entities/complexity), this predicts per-method performance. It is categorised as a Read tool in the Enhanced Knowledge Graph Memory Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on estimate_query_cost? +

Register the Enhanced Knowledge Graph Memory Server MCP server in PolicyLayer and add a rule for estimate_query_cost: 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 Enhanced Knowledge Graph Memory Server. Nothing to install.

What risk level is estimate_query_cost? +

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

Can I rate-limit estimate_query_cost? +

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

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

estimate_query_cost is provided by the Enhanced Knowledge Graph Memory Server MCP server (danielsimonjr/memory-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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claude_query on Claude Bridge → The MCP Attack Database →

Guides

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