MF-RAG: Mutual Fund Document Search

LLM-free RAG system that lets Claude search 500+ Indian mutual fund schemes — semantic search with pgvector and Ollama embeddings, 10x faster than local LLM approaches.

Overview

An LLM-free Retrieval-Augmented Generation system that enables Claude Desktop and Claude Code to search and answer questions about Indian mutual fund documents. Instead of using a local LLM to generate answers (slow, inaccurate, jailbreak-prone), it embeds queries and retrieves relevant document chunks, leaving synthesis to Claude.

Why LLM-Free?

	With Local LLM	MF-RAG
Latency	8–16 seconds	300–500ms
Accuracy	Misses table data	Parses tables correctly
Security	Jailbreak-prone	No LLM to jailbreak
Cost	LLM inference per query	Embedding only

Architecture

Claude Desktop/Code → HTTP → MCP Server (Bun)
                                  ↓
                              Embedder (Ollama bge-m3)
                                  ↓
                              pgvector search (PostgreSQL)
                                  ↓
                              Return chunks → Claude synthesizes

MCP Tools

query_mutual_funds — Semantic search returning chunks with citations for Claude to synthesize
search_mutual_fund_docs — Lower-level vector search
list_schemes — Browse all 500+ indexed mutual fund schemes
check_status — Health check for pgvector and Ollama

Document Coverage

500+ mutual fund schemes across 50+ AMCs
3 document types: SID (Scheme Info), KIM (Key Memorandum), Factsheets
13,500+ chunks indexed with 1024-dimension vectors
90.8% SEBI citation coverage with source URLs and page numbers

Tech Stack

Bun runtime with TypeScript (strict)
MCP SDK for Claude integration (HTTP + stdio transports)
PostgreSQL 16 + pgvector with HNSW indexing for similarity search
Ollama + bge-m3 for open-source embeddings
Drizzle ORM for type-safe database queries
unpdf + pdfplumber (Python) for text and table extraction
Caddy reverse proxy with auto TLS

Try It

Add this to your Claude Desktop MCP settings to query Indian mutual fund documents:

{
  "mcpServers": {
    "mf-rag": {
      "url": "https://mf-rag.samuelnittala.dev/mcp"
    }
  }
}

Then ask Claude anything about Indian mutual fund schemes — holdings, NAV, risk factors, expense ratios, and more.