forexfactory-mcp by kjpou1 - MCP Server

📅 ForexFactory MCP Server

An MCP (Model Context Protocol) server that exposes ForexFactory economic calendar data as resources and tools.

Designed for use in agentic workflows, LLMs, and trading assistants.

📂 Table of contents (click to expand)

🚀 Features

✅ Retrieve economic calendar events by time period (today, this_week, custom, etc.)
✅ Access via MCP resources (for subscription-style access)
✅ Access via MCP tools (direct calls from clients/agents)
✅ JSON-first responses for easy integration
⚡ Integrates with LangChain, n8n, or any MCP-compatible client

📌 Development Status

This project is actively developed. The core functionality is stable (retrieving ForexFactory economic calendar events via MCP tools and resources), but we are still:

Expanding features (prompts, deployment options)
Improving documentation and examples

We welcome feedback and contributions while we continue building out the ecosystem.

📂 Project Structure (click to expand)

forexfactory-mcp/
│── src/forexfactory_mcp/   # Main package
│   ├── models/             # Schemas & enums
│   ├── services/           # Scraper + data normalization
│   ├── tools/              # MCP tool definitions
│   ├── resources/          # MCP resource definitions
│   ├── prompts/            # Prompt templates (optional MCP prompts)
│   ├── utils/              # Shared helpers & config
│   └── server.py           # FastMCP server entrypoint
│
│── examples/               # Example clients
│── tests/                  # Unit tests
│── .env.example            # Copy to .env for config
│── pyproject.toml          # Dependencies & metadata
│── README.md               # Documentation
│── .python-version         # Python version pin (3.12)

(See repo for full details — this is a high-level layout for contributors.)

🔧 Installation

Requirements

Python 3.12+
uv or pip
A modern terminal or MCP-compatible client

Setup

# Clone repo
git clone https://github.com/kjpou1/forexfactory-mcp.git
cd forexfactory-mcp

# Install dependencies
uv sync   # or: pip install -e .

# Copy example environment and adjust if needed
cp .env.example .env

▶️ Usage

⚡ Quickstart

Start the server with default settings (stdio transport):

uv run ffcal-server

Run with HTTP transport:

uv run ffcal-server --transport http --host 0.0.0.0 --port 8080

SSE transport (⚠️ deprecated)

uv run ffcal-server --transport sse --host 127.0.0.1 --port 8001

Environment variable defaults

MCP_TRANSPORT=http
MCP_HOST=0.0.0.0
MCP_PORT=8080

🏷️ Namespace

Default namespace:

ffcal

Override via .env:

NAMESPACE=ffcal

📦 Resources

Name	Path	Description
`events_today`	`ffcal://events/today`	Today’s events
`events_week`	`ffcal://events/week`	All events this week
`events_range`	`ffcal://events/range/{start}/{end}`	Custom date range

🛠️ Tools

Name	Type	Description
`ffcal_get_calendar_events`	Tool	Retrieve events for a given period

Supported values:

today, tomorrow, yesterday, this_week, next_week, last_week, this_month, next_month, last_month, custom

📝 Prompts

Name	Description
`ffcal_daily_prep`	Trader prep note for today
`ffcal_weekly_outlook`	Weekly macro event summary
`ffcal_volatility_grid`	Weekly event-risk heatmap
`ffcal_trade_map_scenarios`	Scenario map for specific events

🧩 Prompt Styles

All prompts support a style parameter to control formatting. Default:

style: str = "bullet points"

See the for available formats.

💻 Client Examples

Example: Using MCP CLI

mcp call ffcal:get_calendar_events time_period=this_week

Example: Using in Python

from mcp.client.session import Session
async with Session("ws://localhost:8000") as session:
    result = await session.call_tool("ffcal:get_calendar_events", {"time_period": "today"})
    print(result)

Example: LangChain Integration

from langchain.agents import initialize_agent
from langchain_mcp import MCPToolkit

toolkit = MCPToolkit.from_server_url("ws://localhost:8000", namespace="ffcal")
agent = initialize_agent(toolkit.tools)
response = agent.run("What are today’s USD-related high impact events?")
print(response)

📘 Client Configuration Reference

Includes:

✅ Example configs for Claude Desktop (local + Docker)
🐳 Docker build and setup
🧩 VS Code MCP integration (future)
🧪 Testing + troubleshooting checklist
🔍 Inspector setup for visual debugging

⚙️ Configuration Reference (click to expand)

⚙️ Configuration

Variable	Default	Description
`NAMESPACE`	`ffcal`	Namespace prefix
`MCP_TRANSPORT`	`stdio`	Transport type (`stdio`, `http`, `sse`)
`MCP_HOST`	`127.0.0.1`	Host for HTTP/SSE
`MCP_PORT`	`8000`	Port for HTTP/SSE
`SCRAPER_TIMEOUT_MS`	`5000`	Playwright timeout
`LOCAL_TIMEZONE`	System local	Timezone override

Example `.env`

MCP_TRANSPORT=http
MCP_HOST=0.0.0.0
MCP_PORT=8080
NAMESPACE=ffcal

🐳 Docker Integration (click to expand)

🐳 Docker Integration

Supports both stdio (default) and HTTP/SSE.

docker compose build
docker compose up forexfactory_mcp

Runs MCP server and exposes it on port 8000.

🧰 Makefile Targets (click to expand)

Target	Description
`make build`	Build Docker image
`make run-http`	Run server in HTTP mode
`make run-stdio`	Run in stdio mode
`make dev-http`	Inspect via MCP Inspector
`make stop`	Stop containers

🧩 Troubleshooting Docker (click to expand)

🐍 1. `uv` or dependency install fails

Run:

docker compose build --no-cache forexfactory_mcp

⚡ 2. Server exits immediately

Switch to:

make run-http

🌐 3. Port in use

Change port:

docker compose run --rm -e MCP_PORT=8080 forexfactory_mcp

🔐 4. Browser fails

Install Chromium:

docker compose run forexfactory_mcp playwright install chromium

🧪 Testing & Roadmap (click to expand)

🧪 Testing

pytest -v

📊 Roadmap

Event filters by currency and impact
Historical backfill
MCP prompt expansions
Cloud-ready deployment

🤝 Contributing

Fork the repo
Create a feature branch
Commit with a clear message
Push and open a PR

📜 License

MIT License – see for details.