PostgreSQL Manager + MCP Server

A complete Python application for PostgreSQL database management with two modes:

• Desktop GUI (Tkinter) — for direct human use

• MCP Server — for AI-assisted database analysis via Claude Desktop

What It Does

🔌 Connection Management

• Save multiple named PostgreSQL connection profiles in config.ini

• Test connections before saving

• Fields: host, port, database, username, password, SSL mode

🌲 Object Explorer

• Browse: Schemas → Tables → Columns (with types, nullability, PK markers)

• Browse: Schemas → Views

• Double-click a table → auto-generates SELECT * FROM ... LIMIT 100

• Right-click → Select Top 100, Show Columns

📝 SQL Query Editor

• Syntax highlighting for SQL keywords

• Press F5 to execute (or click Run)

• Query history (session-based, navigate with ↑/↓ buttons)

• Select specific text to run only that portion

📊 Results Grid

• Scrollable table with column headers

• Row count + elapsed time display

• Export to CSV with one click

🧪 SP Analyzer + Test Data Generator

Upload a .sql file containing a stored procedure or function:

1. Analyse — extracts SELECT queries, detects referenced tables, infers WHERE conditions

2. Generate Preview — creates Faker-based test data respecting types, FKs, enums, UNIQUE

3. Insert Test Data — inserts into an open transaction (NOT committed)

4. Run your SP manually in the query editor to verify

5. Commit or Rollback — on-demand, manual control

🤖 MCP Server (AI-Powered Mode)

When connected to Claude Desktop, Claude can:

• Fetch SP bodies directly from pg_proc

• Execute SELECT queries found in the SP

• Recursively follow SQL strings stored inside DB column values (the killer feature)

• Understand schema, FKs, enums, CHECK constraints

• Generate and insert test data in FK-dependency order

• Wait for you to verify, then commit or rollback

Related MCP server: Database MCP Server

Prerequisites

Mandatory

Optional (for MCP mode)

⚠️ Python must be in your system PATH. Run python --version in a terminal to verify.

Installation

Option 1: Run the installer script (Windows)

install.bat

This checks for Python, creates a virtual environment, and installs all dependencies.

Option 2: Manual

pip install -r requirements.txt

Dependencies installed:

• psycopg2-binary — PostgreSQL driver

• sqlparse — SQL statement parser

• Faker — realistic test data generation

• mcp[cli] — Anthropic's MCP SDK for the AI server

Running the Application

Desktop GUI

run.bat

Or manually:

python main.py

MCP Server (for Claude Desktop)

python mcp_server.py

With auto-connect:

python mcp_server.py --host localhost --port 5432 --db mydb --user postgres --password secret
python mcp_server.py --profile local
python mcp_server.py --dsn "postgresql://user:pass@host:5432/db"

Configuring Claude Desktop

1. Copy claude_desktop_config.json to %APPDATA%\Claude\claude_desktop_config.json (or merge into your existing config)

2. Restart Claude Desktop

3. The postgres-mcp tools will appear automatically

Example config:

{
  "mcpServers": {
    "postgres-mcp": {
      "command": "python",
      "args": ["C:/Balaji/MyProjects/postgres-mcp/mcp_server.py"],
      "cwd": "C:/Balaji/MyProjects/postgres-mcp"
    }
  }
}

Configuration — config.ini

[app]
theme = clam
font_size = 11
row_limit = 1000
default_test_rows = 10

[profile_local]
name = Local PostgreSQL
host = localhost
port = 5432
database = postgres
username = postgres
password =
ssl_mode = prefer

Add more profiles by duplicating the [profile_xxx] section with a unique name.

MCP Tools Reference

Troubleshooting

License

MIT