# isaacwasserman/mcp-snowflake-server [Health: Active]

**Category:** 🗄️ Databases  
**Repository:** https://github.com/isaacwasserman/mcp-snowflake-server  
**GitHub Stars:** 186  
**npm Downloads (last month):** 30651  
**Views:** 2  
**Installs:** 0  
**Upvotes:** 0  
**Directory Page:** https://allmcps.com/mcp/isaacwasserman-mcp-snowflake-server

## Description
Snowflake integration implementing read and (optional) write operations as well as insight tracking

## Tools
Capabilities this server exposes over MCP:

- **read_query**
- **query**
- **SELECT**
- **write_query**
- **create_table**
- **list_databases**
- **list_schemas**
- **database**
- **list_tables**
- **schema**
- **describe_table**
- **table_name**
- **database.schema.table**
- **append_insight**
- **insight**

## Claude Desktop Quick Installation
Install path detected from listing signals. Uses `npx` (confidence: high):

```json
"mcpServers": {
  "mcp-snowflake-server": {
    "command": "npx",
    "args": ["-y","@smithery/cli"],
    "env": {
      "SNOWFLAKE_USER": "",
      "SNOWFLAKE_ACCOUNT": "",
      "SNOWFLAKE_ROLE": "",
      "SNOWFLAKE_DATABASE": "",
      "SNOWFLAKE_SCHEMA": "",
      "SNOWFLAKE_WAREHOUSE": "",
      "SNOWFLAKE_PASSWORD": "",
      "SNOWFLAKE_PRIVATE_KEY_PATH": ""
    }
  }
}
```

**Requires environment variables:** `SNOWFLAKE_USER`, `SNOWFLAKE_ACCOUNT`, `SNOWFLAKE_ROLE`, `SNOWFLAKE_DATABASE`, `SNOWFLAKE_SCHEMA`, `SNOWFLAKE_WAREHOUSE`, `SNOWFLAKE_PASSWORD`, `SNOWFLAKE_PRIVATE_KEY_PATH` — the values above are empty placeholders; fill in real credentials before running (see the repository for what each one is for).

## Documentation & README

[![MseeP.ai Security Assessment Badge](https://mseep.net/pr/isaacwasserman-mcp-snowflake-server-badge.png)](https://mseep.ai/app/isaacwasserman-mcp-snowflake-server)

# Snowflake MCP Server
---

## Overview

A Model Context Protocol (MCP) server implementation that provides database interaction with Snowflake. This server enables running SQL queries via tools and exposes data insights and schema context as resources.

---

## Components

### Resources

- **`memo://insights`**  
  A continuously updated memo aggregating discovered data insights.  
  Updated automatically when new insights are appended via the `append_insight` tool.

- **`context://table/{table_name}`**  
  (If prefetch enabled) Per-table schema summaries, including columns and comments, exposed as individual resources.

---

### Tools

The server exposes the following tools:

#### Query Tools

- **`read_query`**  
  Execute `SELECT` queries to read data from the database.  
  **Input:**

  - `query` (string): The `SELECT` SQL query to execute  
    **Returns:** Query results as array of objects

- **`write_query`** (enabled only with `--allow-write`)  
  Execute `INSERT`, `UPDATE`, or `DELETE` queries.  
  **Input:**

  - `query` (string): The SQL modification query  
    **Returns:** Number of affected rows or confirmation

- **`create_table`** (enabled only with `--allow-write`)  
  Create new tables in the database.  
  **Input:**
  - `query` (string): `CREATE TABLE` SQL statement  
    **Returns:** Confirmation of table creation

#### Schema Tools

- **`list_databases`**  
  List all databases in the Snowflake instance.  
  **Returns:** Array of database names

- **`list_schemas`**  
  List all schemas within a specific database.  
  **Input:**

  - `database` (string): Name of the database  
    **Returns:** Array of schema names

- **`list_tables`**  
  List all tables within a specific database and schema.  
  **Input:**

  - `database` (string): Name of the database
  - `schema` (string): Name of the schema  
    **Returns:** Array of table metadata

- **`describe_table`**  
  View column information for a specific table.  
  **Input:**
  - `table_name` (string): Fully qualified table name (`database.schema.table`)  
    **Returns:** Array of column definitions with names, types, nullability, defaults, and comments

#### Analysis Tools

- **`append_insight`**  
  Add new data insights to the memo resource.  
  **Input:**
  - `insight` (string): Data insight discovered from analysis  
    **Returns:** Confirmation of insight addition  
    **Effect:** Triggers update of `memo://insights` resource

---

## Usage with Claude Desktop

### Installing via Smithery

To install Snowflake Server for Claude Desktop automatically via [Smithery](https://smithery.ai/server/mcp_snowflake_server):

```bash
npx -y @smithery/cli install mcp_snowflake_server --client claude
```

---

### Installing via UVX

#### Traditional Configuration (Individual Parameters)

```json
"mcpServers": {
  "snowflake_pip": {
    "command": "uvx",
    "args": [
      "--python=3.12",  // Optional: specify Python version <=3.12
      "mcp_snowflake_server",
      "--account", "your_account",
      "--warehouse", "your_warehouse",
      "--user", "your_user",
      "--password", "your_password",
      "--role", "your_role",
      "--database", "your_database",
      "--schema", "your_schema"
      // Optionally: "--private_key_path", "your_private_key_absolute_path"
      // Optionally: "--allow_write"
      // Optionally: "--log_dir", "/absolute/path/to/logs"
      // Optionally: "--log_level", "DEBUG"/"INFO"/"WARNING"/"ERROR"/"CRITICAL"
      // Optionally: "--exclude_tools", "{tool_name}", ["{other_tool_name}"]
    ]
  }
}
```

#### TOML Configuration (Recommended)

```json
"mcpServers": {
  "snowflake_production": {
    "command": "uvx",
    "args": [
      "--python=3.12",
      "mcp_snowflake_server",
      "--connections-file", "/path/to/snowflake_connections.toml",
      "--connection-name", "production"
      // Optionally: "--allow_write"
      // Optionally: "--log_dir", "/absolute/path/to/logs"
      // Optionally: "--log_level", "DEBUG"/"INFO"/"WARNING"/"ERROR"/"CRITICAL"
      // Optionally: "--exclude_tools", "{tool_name}", ["{other_tool_name}"]
    ]
  },
  "snowflake_staging": {
    "command": "uvx",
    "args": [
      "--python=3.12",
      "mcp_snowflake_server",
      "--connections-file", "/path/to/snowflake_connections.toml",
      "--connection-name", "staging"
    ]
  }
}
```

---

### Installing Locally

1. Install [Claude AI Desktop App](https://claude.ai/download)

2. Install `uv`:

```bash
curl -LsSf https://astral.sh/uv/install.sh | sh
```

3. Create a `.env` file with your Snowflake credentials:

```bash
SNOWFLAKE_USER="xxx@your_email.com"
SNOWFLAKE_ACCOUNT="xxx"
SNOWFLAKE_ROLE="xxx"
SNOWFLAKE_DATABASE="xxx"
SNOWFLAKE_SCHEMA="xxx"
SNOWFLAKE_WAREHOUSE="xxx"
SNOWFLAKE_PASSWORD="xxx"
SNOWFLAKE_PASSWORD="xxx"
SNOWFLAKE_PRIVATE_KEY_PATH=/absolute/path/key.p8
# Alternatively, use external browser authentication:
# SNOWFLAKE_AUTHENTICATOR="externalbrowser"
```

4. [Optional] Modify `runtime_config.json` to set exclusion patterns for databases, schemas, or tables.

5. Test locally:

```bash
uv --directory /absolute/path/to/mcp_snowflake_server run mcp_snowflake_server
```

6. Add the server to your `claude_desktop_config.json`:

#### Traditional Configuration (Using Environment Variables)

```json
"mcpServers": {
  "snowflake_local": {
    "command": "/absolute/path/to/uv",
    "args": [
      "--python=3.12",  // Optional
      "--directory", "/absolute/path/to/mcp_snowflake_server",
      "run", "mcp_snowflake_server"
      // Optionally: "--allow_write"
      // Optionally: "--log_dir", "/absolute/path/to/logs"
      // Optionally: "--log_level", "DEBUG"/"INFO"/"WARNING"/"ERROR"/"CRITICAL"
      // Optionally: "--exclude_tools", "{tool_name}", ["{other_tool_name}"]
    ]
  }
}
```

#### TOML Configuration (Recommended)

```json
"mcpServers": {
  "snowflake_local": {
    "command": "/absolute/path/to/uv",
    "args": [
      "--python=3.12",
      "--directory", "/absolute/path/to/mcp_snowflake_server",
      "run", "mcp_snowflake_server",
      "--connections-file", "/absolute/path/to/snowflake_connections.toml",
      "--connection-name", "development"
      // Optionally: "--allow_write"
      // Optionally: "--log_dir", "/absolute/path/to/logs"
      // Optionally: "--log_level", "DEBUG"/"INFO"/"WARNING"/"ERROR"/"CRITICAL"
      // Optionally: "--exclude_tools", "{tool_name}", ["{other_tool_name}"]
    ]
  }
}
```

---

## Notes

- By default, **write operations are disabled**. Enable them explicitly with `--allow-write`.
- The server supports filtering out specific databases, schemas, or tables via exclusion patterns.
- The server exposes additional per-table context resources if prefetching is enabled.
- The `append_insight` tool updates the `memo://insights` resource dynamically.

---

## License

MIT