Rails Pg Extras Mcp
What is Rails Pg Extras Mcp
Rails PG Extras MCP is an interface that implements the Model Context Protocol (MCP) for the rails-pg-extras gem. It facilitates easy access to PostgreSQL metadata and performance analysis using natural language queries directed at a language model (LLM).
Use cases
This tool is useful for developers and database administrators who need to quickly analyze PostgreSQL database performance and metadata. It allows for natural language querying for database insights, making it easier to understand complex metrics without deep technical knowledge.
How to use
To use the library, you first need to add it to your Rails application by updating the Gemfile. Then, mount the MCP app in your routes configuration. After setting up the server, install the mcp-remote tool to connect your LLM to the app. Configuration in your LLM allows for querying the database using the MCP interface.
Key features
Key features include the ability to perform PostgreSQL performance analysis, access metadata through a simple language prompt, and the integration with MCP protocol over HTTP SSE, allowing seamless interaction with LLMs for database insights.
Where to use
This can be used in any Rails application utilizing the PostgreSQL database. It is particularly beneficial in development, testing, and operations environments where database performance monitoring and management are critical.
Overview
What is Rails Pg Extras Mcp
Rails PG Extras MCP is an interface that implements the Model Context Protocol (MCP) for the rails-pg-extras gem. It facilitates easy access to PostgreSQL metadata and performance analysis using natural language queries directed at a language model (LLM).
Use cases
This tool is useful for developers and database administrators who need to quickly analyze PostgreSQL database performance and metadata. It allows for natural language querying for database insights, making it easier to understand complex metrics without deep technical knowledge.
How to use
To use the library, you first need to add it to your Rails application by updating the Gemfile. Then, mount the MCP app in your routes configuration. After setting up the server, install the mcp-remote tool to connect your LLM to the app. Configuration in your LLM allows for querying the database using the MCP interface.
Key features
Key features include the ability to perform PostgreSQL performance analysis, access metadata through a simple language prompt, and the integration with MCP protocol over HTTP SSE, allowing seamless interaction with LLMs for database insights.
Where to use
This can be used in any Rails application utilizing the PostgreSQL database. It is particularly beneficial in development, testing, and operations environments where database performance monitoring and management are critical.
Content
Rails PG Extras MCP 
MCP (Model Context Protocol) interface for rails-pg-extras gem. It enables PostgreSQL metadata and performance analysis with a simple LLM prompt.
Installation
bundle add rails-pg-extras bundle add rails-pg-extras-mcp
Library supports MCP protocol via HTTP SSE interface.
config/routes.rb
# Authentication is not yet supported
mount RailsPgExtras.mcp_app, at: "pg-extras-mcp"
Install mcp-remote:
npm install -g mcp-remote
and in your LLM of choice:
{
"mcpServers": {
"pg-extras": {
"command": "npx",
"args": [
"mcp-remote",
"http://localhost:3000/pg-extras-mcp/sse"
]
}
}
}You can now ask LLM questions about the metadata and performance metrics of your database.
Status
Project is in an early beta, so proceed with caution.