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shrey715

Polybase MCP

by shrey715
OverviewSchemaRelated ServersScoreDiscussions
Python
Remote

Polybase MCP

Universal Database Adapter for PostgreSQL, Supabase & MongoDB — built with the Model Context Protocol (MCP).

Features

  • PostgreSQL/Supabase — Connect via SQLAlchemy

  • MongoDB — Connect to MongoDB & Atlas

  • Read-Only Safety — Only SELECT/find queries allowed

  • Docker Ready — Multi-stage build with non-root user

  • Streamable HTTP — Works with Claude Desktop & VS Code

Related MCP server: Supabase MCP Server

Quick Start

Docker (Recommended)

# Build
docker build -t polybase-mcp -f docker/Dockerfile .

# Run
docker run -p 8000:8000 polybase-mcp

Server available at http://localhost:8000/mcp

Local Development

git clone https://github.com/shrey715/polybase-mcp.git
cd polybase-mcp
uv sync
uv run python -m mcp_server.main

MCP Client Config

VS Code (.vscode/mcp.json)

{
    "servers": {
        "polybase-mcp": {
            "url": "http://localhost:8000/mcp",
            "type": "http"
        }
    }
}

Claude Desktop

{
    "mcpServers": {
        "polybase-mcp": {
            "url": "http://localhost:8000/mcp",
            "transport": "http"
        }
    }
}

Available Tools

Tool

Description

connect_db

Connect to PostgreSQL or MongoDB

list_tables

List tables (PG) or collections (Mongo)

get_schema

Get table columns or sample doc structure

query_db

Execute read-only queries

Connection Examples

# PostgreSQL
connect_db("postgresql://user:pass@host:5432/dbname")

# MongoDB
connect_db("mongodb://user:pass@host:27017/dbname")

# MongoDB Atlas
connect_db("mongodb+srv://user:pass@cluster.mongodb.net/dbname")

Query Examples

# PostgreSQL - SQL
query_db("SELECT * FROM users LIMIT 10")

# MongoDB - collection:filter format
query_db("users")                          # all docs
query_db('users:{"active": true}')         # with filter

Environment Variables

Variable

Default

Description

HOST

0.0.0.0

Server bind address

PORT

8000

Server port

License

MIT

Tool Schema Changelog

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Maintenance

ActivityInactive
ResponsivenessNo issues

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