Low Risk

get_symbol_info

Get information about a specific symbol. Args: symbol: Symbol name Returns: SymbolInfo: Information about the symbol.

How to control get_symbol_info ↓

AI agents call get_symbol_info to retrieve information from MetaTrader 5 MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Low Risk

This tool retrieves symbol metadata without side effects. It queries and returns information about a trading symbol with no capability to modify market data, execute trades, or alter account state. The blast radius of misuse is minimal—an AI agent could only retrieve unnecessary market information, not cause financial harm or execute unintended trades.

From the tool's definition Tool description explicitly states 'Get information about a specific symbol' with return of 'SymbolInfo'. The verb 'Get' and the lack of any modification, deletion, or execution language indicate a read-only retrieval operation.

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

PolicyLayer is an MCP gateway — it sits between your AI agents and MetaTrader 5 MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_symbol_info:

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "get_symbol_info": {}
  }
}

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

  1. Create a free account and register MetaTrader 5 MCP Server — nothing to install.
  2. Add this policy — paste it, or build it visually.
  3. Point your MCP client (Claude, Cursor, anything) at your gateway URL.
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Go deeper

What does the get_symbol_info tool do? +

Get information about a specific symbol. Args: symbol: Symbol name Returns: SymbolInfo: Information about the symbol. It is categorised as a Read tool in the MetaTrader 5 MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_symbol_info? +

Register the MetaTrader 5 MCP Server MCP server in PolicyLayer and add a rule for get_symbol_info: 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 MetaTrader 5 MCP Server. Nothing to install.

What risk level is get_symbol_info? +

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

Can I rate-limit get_symbol_info? +

Yes. Add a rate_limit block to the get_symbol_info 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_symbol_info completely? +

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

get_symbol_info is provided by the MetaTrader 5 MCP Server MCP server (qoyyuum/mcp-metatrader5-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every MetaTrader 5 MCP Server tool call.

Deterministic rules across all 26 MetaTrader 5 MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

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26 MetaTrader 5 MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.

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