list_experts

List available Expert Advisors for backtesting

SERVERMCP MetaTrader 4 Server SOURCE8nite/metatrader-4-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/8nite-metatrader-4-mcp/list-experts.md

WHAT IT DOES

What list_experts does on MCP MetaTrader 4 Server

AI agents call list_experts to retrieve information from MCP MetaTrader 4 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 list_experts is rated Low

This tool performs a read-only query to list existing Expert Advisors. It retrieves data about available EAs for backtesting purposes but does not create, modify, delete, execute, or trigger any trading operations. The blast radius of misuse is minimal—an agent could only learn what EAs exist in the system, which is low-risk information disclosure.

From the tool's definition Tool name 'list_experts' and description 'List available Expert Advisors for backtesting' indicate a retrieval operation that queries and returns information about available Expert Advisors without modifying or executing any code.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs list_experts safely

PolicyLayer is an MCP gateway: it sits between your AI agents and MCP MetaTrader 4 Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For list_experts, this is the rule to start with:

list_experts Allowed

list_experts 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": {
    "list_experts": {}
  }
}

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

The button opens the PolicyLayer dashboard: create your workspace, connect MCP MetaTrader 4 Server, apply this rule, and every list_experts call is checked against it from then on.

FAQ

Questions about list_experts

What does the list_experts tool do? +

List available Expert Advisors for backtesting. It is categorised as a Read tool in the MCP MetaTrader 4 Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_experts? +

Register the MCP MetaTrader 4 Server MCP server in PolicyLayer and add a rule for list_experts: 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 MCP MetaTrader 4 Server. Nothing to install.

What risk level is list_experts? +

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

Can I rate-limit list_experts? +

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

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

list_experts is provided by the MCP MetaTrader 4 Server MCP server (8nite/metatrader-4-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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