run_backtest

Run a backtest on an Expert Advisor

SERVERMCP MetaTrader 4 Server SOURCE8nite/metatrader-4-mcp

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/8nite-metatrader-4-mcp/run-backtest.md

WHAT IT DOES

What run_backtest does on MCP MetaTrader 4 Server

AI agents invoke run_backtest to trigger actions in MCP MetaTrader 4 Server. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

RISK

Why run_backtest is rated High

This tool triggers execution of trading strategy code (Expert Advisors) against historical market data. While backtesting is non-destructive and does not commit real trades or modify live data, it executes arbitrary user-provided trading algorithms.

From the tool's definition Tool is named 'run_backtest' with description 'Run a backtest on an Expert Advisor'. The verb 'Run' indicates execution of code/algorithms.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

run_backtest Rate-limited

run_backtest stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "run_backtest": {
      "limits": [
        {
          "counter": "run_backtest_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT 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 run_backtest call is checked against it from then on.

FAQ

Questions about run_backtest

What does the run_backtest tool do? +

Run a backtest on an Expert Advisor. It is categorised as a Execute tool in the MCP MetaTrader 4 Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on run_backtest? +

Register the MCP MetaTrader 4 Server MCP server in PolicyLayer and add a rule for run_backtest: 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 run_backtest? +

run_backtest is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit run_backtest? +

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

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

run_backtest 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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