data_fetch_candles

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/data-fetch-candles.md

WHAT IT DOES

What data_fetch_candles does on MetaTrader5 MCP Server

AI agents call data_fetch_candles 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 data_fetch_candles is rated Low

This tool retrieves historical candlestick pricing data without modifying market state or executing trades. It is a Read operation. Severity is medium rather than low because financial market data access could enable market manipulation or unfair trading if combined with execution tools, but the tool itself has no direct harmful effects.

From the tool's definition Tool name 'data_fetch_candles' indicates retrieval of OHLCV candle data. Server description confirms it provides 'historical OHLCV data' and 'real-time quotes' for forex and trading instruments.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs data_fetch_candles 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 data_fetch_candles, this is the rule to start with:

data_fetch_candles Allowed

data_fetch_candles 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": {
    "data_fetch_candles": {}
  }
}

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 data_fetch_candles call is checked against it from then on.

FAQ

Questions about data_fetch_candles

What does the data_fetch_candles tool do? +

data_fetch_candles 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 data_fetch_candles? +

Register the MetaTrader5 MCP Server MCP server in PolicyLayer and add a rule for data_fetch_candles: 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 data_fetch_candles? +

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

Can I rate-limit data_fetch_candles? +

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

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

data_fetch_candles 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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