What is MetatraderMCP AGENTS.md?

Project instructions for an MCP server containing a searchable copy of the official MetaTrader MQL4 and MQL5 documentation. MQL4 and MQL5 are programming languages used to build MetaTrader trading tools.

They help agents find MQL documentation, compile MQL code through local or remote MetaEditor when configured, and use fallback compilation and search services.

They explain how to install the server, build its search index, run it, and check its code, avoiding setup and lookup uncertainty.

MetatraderMCP AGENTS.md — Instructions file for Codex and OpenCode by TheFractalyst: Project instructions for an MCP server containing a sea

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods

npx agentmods add instructions/thefractalyst/metatradermcp/agents-md

Clone the repo

git clone --depth 1 https://github.com/TheFractalyst/MetatraderMCP

Made for: Codex, OpenCode.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/thefractalyst/metatradermcp/agents-md.svg)](https://agentmods.dev/instructions/thefractalyst/metatradermcp/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/thefractalyst/metatradermcp/agents-md"><img src="https://agentmods.dev/badge/instructions/thefractalyst/metatradermcp/agents-md.svg" alt="Measured on agentmods" height="20"></a>

Per session 970 This file is loaded in full into every session.

When invoked 970 The same file — it is already loaded in full.

Security scan A 0 findings. Scan, not verified.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5	$0.00970	$0.00970
Opus 5	$0.00485	$0.00485
Sonnet 5	$0.00194	$0.00194
Haiku 4.5	$0.00097	$0.00097

Measured 5d ago against content hash 84afbe495e3c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

MetatraderMCP AGENTS.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

AGENTS.md · 112 lines

How it starts

The opening of the file, as written. The whole thing — 112 lines — stays where its author put it; the contents beside it link to each section on GitHub.

MetaTraderMCP - Agent Instructions

Overview

MQL4/MQL5 reference documentation MCP server with 4863 entries covering 100% of the official MQL5 and MQL4 documentation sitemaps.

Commands

Setup

python -m venv .venv
source .venv/bin/activate  # macOS/Linux
pip install -e ".[dev]"

Index database

metatradermcp build

Run server

metatradermcp                         # stdio (default)
TRANSPORT=sse PORT=8080 metatradermcp # HTTP/SSE

Lint

ruff check . --line-length 120

Test

pytest tests/ -v

Architecture

FastMCP 3.4 with FileSystemProvider for auto-discovery
ChromaDB vector store (cosine, all-MiniLM-L6-v2, 384-dim)
3 composable lifespans: db | model | cache
Circuit breaker on compiler and ChromaDB
Hot cache for fast lookups
Response capping at 80KB
Error masking (no internal details leaked)

Compiler (gold-standard MetaEditor via SSH)

The mql_compile tool tries compilation methods in priority order:

Local MetaEditor (METAEDITOR_PATH env var, or auto-detected Wine/CrossOver)
Remote SSH MetaEditor (METAEDITOR_SSH_HOST env var) - RECOMMENDED for macOS
mql5-lsp (community Rust LSP, tree-sitter based) - fallback, catches syntax only
Python pattern checks - fallback, catches MQL4->MQL5 migration issues

Setting up SSH compilation (recommended)

Requires a Windows host (or WSL) with MetaTrader 5 installed and SSH access:

# In .env or your shell environment:
export METAEDITOR_SSH_HOST=your-windows-host

The MCP auto-installs bin/mql_compile_remote.sh on the remote host on first use. The helper script:

Derives Windows paths from WSL paths (/mnt/c/... -> C:\\...\\)
Runs metaeditor64.exe /compile:"path" /log:"path"
Reads the UTF-16LE log and converts to UTF-8 for parsing

Compiler accuracy comparison

+-------------------------+--------+-----------+
| Error type              | LSP    | MetaEdit  |
+-------------------------+--------+-----------+
| Missing semicolon       | YES    | YES       |
| Unresolved includes     | YES    | YES       |
| Undeclared identifiers  | NO     | YES       |
| Wrong parameter count   | YES    | YES       |
| Type mismatches         | NO     | YES       |
| MQL4-isms in MQL5       | YES*   | YES       |
+-------------------------+--------+-----------+
* = caught by Python pattern checks, not the LSP itself

Read the full file on GitHub · 112 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

5d ago First seen · 112 lines · 970 tokens per session scan A 84afbe495e3c

Subscribe to this mod's changes

MetatraderMCP AGENTS.md is an instructions file published in the GitHub repository TheFractalyst/MetatraderMCP (2 stars, last pushed 8d ago), licensed MIT. It adds 970 tokens to every session, about $0.0049 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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MetatraderMCP AGENTS.md