# list_experts

List available Expert Advisors for backtesting

Agent View of the PolicyLayer registry record for `list_experts`. HTML page: https://policylayer.com/tools/8nite-metatrader-4-mcp/list-experts

## Facts

- Tool: `list_experts`
- Server: MCP MetaTrader 4 Server (`8nite/metatrader-4-mcp`) — https://policylayer.com/tools/8nite-metatrader-4-mcp.md
- Homepage: https://github.com/8nite/metatrader-4-mcp
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "list_experts",
    "arguments": {}
  }
}
```

## 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 own 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."

## Use case

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.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches MCP MetaTrader 4 Server:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "list_experts": {}
  }
}
```

## Other tools on MCP MetaTrader 4 Server (13)

- `compile_ea` — Execute — https://policylayer.com/tools/8nite-metatrader-4-mcp/compile-ea.md
- `run_backtest` — Execute — https://policylayer.com/tools/8nite-metatrader-4-mcp/run-backtest.md
- `close_position` — Financial — https://policylayer.com/tools/8nite-metatrader-4-mcp/close-position.md
- `place_order` — Financial — https://policylayer.com/tools/8nite-metatrader-4-mcp/place-order.md
- `get_account_info` — Read — https://policylayer.com/tools/8nite-metatrader-4-mcp/get-account-info.md
- `get_backtest_results` — Read — https://policylayer.com/tools/8nite-metatrader-4-mcp/get-backtest-results.md
- `get_backtest_status` — Read — https://policylayer.com/tools/8nite-metatrader-4-mcp/get-backtest-status.md
- `get_history` — Read — https://policylayer.com/tools/8nite-metatrader-4-mcp/get-history.md
- `get_market_data` — Read — https://policylayer.com/tools/8nite-metatrader-4-mcp/get-market-data.md
- `get_positions` — Read — https://policylayer.com/tools/8nite-metatrader-4-mcp/get-positions.md
- `list_local_eas` — Read — https://policylayer.com/tools/8nite-metatrader-4-mcp/list-local-eas.md
- `sync_ea` — Write — https://policylayer.com/tools/8nite-metatrader-4-mcp/sync-ea.md
- `sync_ea_from_file` — Write — https://policylayer.com/tools/8nite-metatrader-4-mcp/sync-ea-from-file.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=8nite-metatrader-4-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/8nite-metatrader-4-mcp