# Northwind PostgreSQL MCP Server

> Use this tool when you need to query and visualize data from the Northwind sample PostgreSQL database using natural language. It solves problems related to data exploration and analysis by generating SQL queries and charts based on user input. The tool takes natural language queries as input and outputs SQL code and visual charts, making it ideal for ad-hoc data analysis and reporting tasks.

Canonical page: https://skillsregistry.net/skills/mosesliao-postgres-mcp  
JSON: https://api.skillsregistry.net/v1/skills/mosesliao-postgres-mcp

## Description

A read-only MCP server that connects Claude to the Northwind sample PostgreSQL database, allowing natural language queries to generate SQL and charts.

## Trust

- **Trust score (0–1):** 0.69
- **Verification tier:** scanned
- **Last scanned:** 2026-08-31

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** database
- **Updated:** 2026-08-31

## Source

- **Source listing:** [Glama](https://glama.ai/mcp/servers/rgjmlzajp6)
- **Repository:** <https://github.com/mosesliao/postgres-mcp>

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "mosesliao-postgres-mcp"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/mosesliao-postgres-mcp` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/mosesliao-postgres-mcp/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt