Local RAG
Local RAG for semantic document search without external API calls.
Determine the Folder for Your Documents
Decide which folder on your computer contains the documents you want to search through. This folder will be referenced asBASE_DIRand the server will only have access to files within this directory.Open the FastMCP Connection Interface
Go to the FastMCP connection interface and locate your installed “MCP Local RAG” server configuration.Set the BASE_DIR Environment Variable
- In the configuration panel, find the field for ENV values.
- Set
BASE_DIRto the absolute path of your chosen documents folder (e.g.,/Users/yourname/Documents/mydocs).
(Optional) Set Advanced Configuration ENV Values
You may also set the following optional ENV variables, depending on your needs:DB_PATH: (default is./lancedb) — Path to your LanceDB storage directory.CACHE_DIR: (default is./models) — Path to the model cache, if you want the model files stored elsewhere.MODEL_NAME: (default isXenova/all-MiniLM-L6-v2) — HuggingFace model ID, only change if you want a different Transformers.js-compatible embedding model.MAX_FILE_SIZE,CHUNK_SIZE,CHUNK_OVERLAP: Adjust for performance or special needs. Defaults are usually sufficient.
Save the Configuration
Click to save/add the ENV values in the FastMCP interface.Restart the MCP Client
- For Cursor: Fully quit and relaunch the app.
- For Codex: Restart the IDE/extension.
- For Claude Code: No restart needed; changes are picked up immediately.
No API keys or cloud credentials are needed. All data remains local.
You may now begin ingesting, searching, and managing documents using the configured RAG server via your AI client or FastMCP.
Quick Start
Choose Connection Type for
Authentication Required
Please sign in to use FastMCP hosted connections
Configure Environment Variables for
Please provide values for the following environment variables:
started!
The MCP server should open in . If it doesn't open automatically, please check that you have the application installed.
Copy and run this command in your terminal:
Make sure Gemini CLI is installed:
Visit Gemini CLI documentation for installation instructions.
Make sure Claude Code is installed:
Visit Claude Code documentation for installation instructions.
Installation Steps:
Configuration
Installation Failed
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