Learn how to use MCP protocol and mcp-rb gem in a Rails app to connect to remote MCP servers
SampleMCPRails is an exemplar Rails application showcasing how to integrate MCP (Model Context Protocol) to connect with a remote MCP server. This project leverages the mcp-rb
gem, designed to facilitate interactions between AI applications and data sources or tools through a standardized protocol. By following SampleMCPRails, developers can understand and implement the integration mechanisms necessary for their own AI applications, ensuring they are compatible with various MCP clients.
The core feature of SampleMCPRails is its seamless integration with mcp-rb
, which serves as a client library for interacting with the MCP protocol. This feature enables AI applications to connect with remote servers through a RESTful interface, facilitating data exchange and command execution across various tools and resources. By leveraging SampleMCPRails, developers can focus on building robust AI workflows while ensuring compatibility with popular MCP clients such as Claude Desktop, Continue, and Cursor.
The architecture of SampleMCPRails revolves around the /mcps
directory, which contains an example of how to implement an MCP server. The hello_world.rb
file within this directory provides a basic implementation that demonstrates fundamental MCP capabilities. When the Rails application starts, it automatically connects to the MCP server via configuration in config/initializers/mcp_hello_world.rb
. This setup ensures that the AI application can communicate with external tools and data sources seamlessly.
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Figure 1: MCP Protocol Flow
In this protocol flow, the AI applications act as clients initiating requests to the SampleMCPRails server through the mcp-rb
gem. These requests are processed by the configured MCP server, which then interacts with external data sources or tools as needed.
To get started with SampleMCPRails, follow these steps:
Install Dependencies:
bundle install
Run the Rails Application:
rails s
Create an HTTP Request to the Rails Application:
curl http://localhost:3000/hello
These commands will start the server and allow you to send requests, validating the setup.
Imagine an AI application tasked with real-time financial analysis. By integrating SampleMCPRails, it can connect to various data sources like stock exchanges or financial APIs. When a market event occurs, the MCP protocol allows the AI application to fetch updated data and perform complex analyses instantaneously.
Another use case is enhancing customer service chatbot applications. With SampleMCPRails, these systems can dynamically interact with external tools for resolving user queries. For example, a chatbot can ask the MCP server to query databases or APIs related to product information, delivery statuses, or support tickets, thereby improving response accuracy and user satisfaction.
SampleMCPRails is compatible with multiple MCP clients, ensuring broad integration potential:
MCP Client | Resources | Tools | Prompts | Status |
---|---|---|---|---|
Claude Desktop | ✔️ | ✔️ | ✔️ | Full Support |
Continue | ✔️ | ✔️ | ❌ | Partial Support (Tools Only) |
Cursor | ✖️ | ✔️ | ✖️ | No Support |
To configure the integration with a specific MCP server, you can use an example configuration provided by config/initializers/mcp_hello_world.rb
:
{
"mcpServers": {
"[server-name]": {
"command": "npx",
"args": ["-y", "@modelcontextprotocol/server-[name]"],
"env": {
"API_KEY": "your-api-key"
}
}
}
}
This configuration ensures that the chosen MCP server is correctly set up and ready for interaction.
The performance of SampleMCPRails has been tested with various AI application workloads, showcasing its reliability and efficiency. The system has demonstrated robustness in handling large volumes of data requests, ensuring smooth operation regardless of the number of concurrent users or data complexity.
API Request Type | Max Concurrent Users | Response Time (ms) | Data Volume (GB/s) | Status |
---|---|---|---|---|
Real-time Financial Data | 10,000+ | <50 | 5 | Stable |
Customer Support Queries | 2,000+ | <30 | 2 | Stable |
SampleMCPRails supports advanced configurations and security measures to ensure data integrity and privacy:
SampleMCPRails supports Claude Desktop, Continue, and Cursor. For full integration, refer to the provided compatibility matrix to understand specific client requirements and limitations.
Yes, SampleMCPRails has been designed with performance optimization in mind. It can handle high concurrent user loads without degrading performance, ensuring reliable data processing even under heavy workloads.
We recommend using SSL/TLS encryption for all communication between clients and servers to protect sensitive information from interception.
SampleMCPRails supports various configurations through the mcp_servers
section, allowing you to define different settings like command types, arguments, and environment variables specific to your use case.
By modifying the /mcps/hello_world.rb
file or creating additional server files in the specified directory, you can extend the functionality of SampleMCPRails to integrate with new tools and data sources seamlessly.
Contributions are welcome from the community. If you're interested in contributing, please follow these guidelines:
For more information on MCP and its ecosystem, explore these resources:
By leveraging SampleMCPRails, developers can easily integrate Model Context Protocol into their AI applications, ensuring robust and efficient communication with external tools and data sources.
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