arcade-mcp/libs/arcade-mcp-server
Eric Gustin 4a737b9710
Improve .env discovery (#737)
Resolves TOO-201

Documentation PR for this is here:
https://github.com/ArcadeAI/docs/pull/626


<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> **Medium Risk**
> Changes how environment variables/secrets are discovered and loaded,
which can subtly alter runtime behavior depending on directory structure
and existing env vars; bounded traversal and added tests reduce but
don’t eliminate this risk.
> 
> **Overview**
> **Improves `.env` discovery across the MCP server and CLI.** Adds
`find_env_file()` (bounded by the nearest `pyproject.toml` by default)
and switches settings loading, `arcade deploy`, `arcade configure` stdio
env injection, and provider API-key resolution to use it.
> 
> Updates dev reload to also watch the discovered `.env` even when it
lives outside the current working directory, adjusts `deploy --secrets
all` to only run when a `.env` was found, and moves the minimal
scaffold’s `.env.example` to the project root with updated
tests/integration checks. Version bumps align examples and top-level
deps with `arcade-mcp-server` `1.17.4` and `arcade-mcp` `1.11.2`.
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
40cff1738c14674ce01f09fd325ece9c874cd072. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

---------

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-02-25 23:20:28 -08:00
..
arcade_mcp_server Improve .env discovery (#737) 2026-02-25 23:20:28 -08:00
Makefile remove mkdocs for arcade-mcp (#617) 2025-10-13 10:47:41 -07:00
pyproject.toml Improve .env discovery (#737) 2026-02-25 23:20:28 -08:00
README.md Server start events (#635) 2025-10-22 16:14:52 -07:00

Arcade MCP Server

Arcade Logo

Arcade MCP (Model Context Protocol) Server enables AI assistants and development tools to interact with your Arcade tools through a standardized protocol. Build, deploy, and integrate MCP servers seamlessly across different AI platforms.

Features

  • 🚀 FastAPI-like Interface - Simple, intuitive API with MCPApp
  • 🔧 Tool Discovery - Automatic discovery of tools in your project
  • 🔌 Multiple Transports - Support for stdio and HTTP/SSE
  • 🤖 Multi-Client Support - Works with Claude, Cursor, and more
  • 📦 Package Integration - Load installed Arcade packages
  • 🔐 Built-in Security - Environment-based configuration and secrets
  • 🔄 Hot Reload - Development mode with automatic reloading
  • 📊 Production Ready - Deploy with Docker, systemd, PM2, or cloud platforms

Getting Started

Installation

pip install arcade-mcp-server

Create Your First Server

from arcade_mcp_server import MCPApp
from typing import Annotated

app = MCPApp(name="my-tools", version="1.0.0")

@app.tool
def greet(name: Annotated[str, "Name to greet"]) -> str:
    """Greet someone by name."""
    return f"Hello, {name}!"

if __name__ == "__main__":
    app.run()

Run Your Server

# For development
python my_tools.py

# For Claude Desktop
python -m arcade_mcp_server stdio

# For HTTP clients
python -m arcade_mcp_server --host 0.0.0.0 --port 8080

Community

Analytics & Privacy

Arcade MCP Server collects anonymous usage data to help us improve the service and debug issues. We track "MCP server start" events to understand server usage patterns and reliability.

What We Track

When the server starts, we collect the following information:

  • Server configuration: transport type (http or stdio), host, port
  • Server metadata: tool count, server version
  • Runtime environment: Python version, OS type and release
  • Timing: device timestamp
  • Errors: error messages (if startup fails)

Privacy

  • For anonymous users: Events are tracked with an anonymous ID and no user profile is created
  • For authenticated users: Events are linked to your account to help us provide better support
  • No sensitive data (credentials, tool inputs/outputs, or personal information) is ever collected

Opt Out

To disable usage tracking, set the environment variable ARCADE_USAGE_TRACKING to 0.

License

Arcade MCP Server is open source software licensed under the MIT license.