Launching MCP Servers on Fly.io

The Model Context Protocol is days away from turning six months old. You read that right, six months old. MCP Servers have both taken the world by storm, and still trying to figure out what they want to be when they grow up. There is no doubt that M

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Sam Ruby
•5 min read•beginner•
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ClaudeJSONOAuthRuby

Overview

The article discusses the launch of Model Context Protocol (MCP) servers on Fly.io, highlighting their utility, configuration, and security considerations. It also presents a demonstration of setting up a Slack MCP server, emphasizing the ease of deployment and the integration of various tools.

What You'll Learn

1

How to deploy a Slack MCP server using Fly.io

2

Why OAuth 2.1 is important for securing MCP servers

3

How to configure MCP servers without manually editing JSON files

Key Questions Answered

What are the types of MCP servers available?
There are two main types of MCP servers: one that runs as a process on your machine and another that operates as an HTTP server, which standardizes on OAuth 2.1. A third type exists but is deprecated.
How do you configure an MCP server for different tools?
Configuration for MCP servers varies by tool. For Claude, the configuration file is located at ~/Library/Application Support/Claude/claude_desktop_config.json under the MCPServer key, while for Zed, it's at ~/.config/zed/settings.json under the context_servers key.
What security considerations should be taken when running an MCP server?
Running an MCP server locally grants it access to everything on your machine, which raises security concerns. Using a remote server mitigates this risk, but setting up OAuth 2.1 for authentication can be complex.
What command is used to launch a Slack MCP server?
To launch a Slack MCP server, you can use the command: npx -y @modelcontextprotocol/server-slack. This command sets up the server with the necessary configurations and secrets.

Technologies & Tools

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Security
Oauth 2.1
Used for standardizing authentication for MCP servers.
Platform
Fly.io
Platform for deploying MCP servers.

Key Actionable Insights

1
Utilize the Fly.io platform to deploy MCP servers for better scalability and security.
By leveraging Fly.io, developers can avoid the complexities of local deployments while ensuring their applications are secure and easily manageable.
2
Consider using OAuth 2.1 for securing your MCP servers to enhance security protocols.
Although it may require additional setup, implementing OAuth 2.1 can significantly improve the security of your applications, especially when handling sensitive data.
3
Explore the integration options available for various tools like Claude, Zed, and Slack.
Understanding how to configure these tools with MCP servers can streamline your development process and enhance productivity.

Common Pitfalls

1
Assuming that local MCP servers are secure without proper authentication.
Local servers can access sensitive information on your machine, so it's crucial to implement security measures like OAuth 2.1 to protect your data.

Related Concepts

Model Context Protocol
Oauth 2.1
Mcp Server Configuration