symbols_describe

A read tool on the MetaTrader5 MCP server.

SERVERMetaTrader5 MCP Server SOURCEemerzon/mt-data-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/emerzon-mt-data-mcp/symbols-describe.md

WHAT IT DOES

What symbols_describe does on MetaTrader5 MCP Server

AI agents call symbols_describe to retrieve information from MetaTrader5 MCP 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 symbols_describe is rated Low

Based on the naming convention and the server's stated functionality, this tool retrieves descriptive information about trading symbols (metadata, properties, specifications). It does not modify data, execute trades, delete records, or trigger financial transactions. Sibling tools like 'data_fetch_candles' and 'data_fetch_ticks' establish the pattern of read-only data retrieval on this server.

From the tool's definition Tool name 'symbols_describe' suggests retrieval of symbol information or metadata. The server description explicitly mentions 'symbol information' as part of its read-only data capabilities. The empty tool description reduces confidence slightly.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs symbols_describe safely

PolicyLayer is an MCP gateway: it sits between your AI agents and MetaTrader5 MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For symbols_describe, this is the rule to start with:

symbols_describe Allowed

symbols_describe 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": {
    "symbols_describe": {}
  }
}

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

The button opens the PolicyLayer dashboard: create your workspace, connect MetaTrader5 MCP Server, apply this rule, and every symbols_describe call is checked against it from then on.

FAQ

Questions about symbols_describe

What does the symbols_describe tool do? +

symbols_describe is a read tool on the MetaTrader5 MCP Server MCP server. It is categorised as a Read tool in the MetaTrader5 MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on symbols_describe? +

Register the MetaTrader5 MCP Server MCP server in PolicyLayer and add a rule for symbols_describe: 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 MetaTrader5 MCP Server. Nothing to install.

What risk level is symbols_describe? +

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

Can I rate-limit symbols_describe? +

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

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

symbols_describe is provided by the MetaTrader5 MCP Server MCP server (emerzon/mt-data-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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