warehouse-mcp

A production-ready, read-only MCP server for data warehouses including Postgres, Oracle, Snowflake, BigQuery, Redshift, DuckDB, and MotherDuck. It features five-tier role-based access, optional warehouse-role impersonation for native RLS/CLS, JSONL audit logging, optional PII masking, and a semantic-metadata layer. Tools allow executing SELECT queries, browsing catalogs, profiling columns, and looking up business glossary terms.

Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

Community listingLocal stdioSource reviewed; not executedPublished by kalehdoo

Vendor documentation

What you can do with it

Execute read-only SQL queries across multiple warehouse dialects
Browse database schemas, tables, and column metadata
Profile columns and sample data for analytics
Lookup business glossary terms and table documentation

Source and maintenance

Community listingRegistry 0.4.2

mcp-registry: io.github.kalehdoo/warehouse-mcp@0.4.2 Source repository Project website

Maintenance checked: Oct 31, 2026, 10:27 PM UTC

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

warehouse-mcp 0.4.2

npm

warehouse-mcp package definition

{
  "version": "0.4.2",
  "transport": "stdio",
  "identifier": "warehouse-mcp",
  "registryType": "npm",
  "runtimeArguments": [
    {
      "type": "positional",
      "value": "start",
      "isRequired": true,
      "description": "Boots the MCP server. Use 'init' for interactive setup or 'doctor' to diagnose configuration."
    }
  ],
  "environmentVariables": [
    {
      "name": "MCP_TRANSPORT",
      "default": "stdio",
      "description": "Set to 'stdio' for desktop AI clients (Claude Desktop, Cursor). Defaults to 'http'."
    },
    {
      "name": "WAREHOUSE_TYPE",
      "format": "string",
      "choices": [
        "postgres",
        "oracle",
        "redshift",
        "snowflake",
        "bigquery",
        "duckdb"
      ],
      "isRequired": true,
      "description": "Which warehouse to connect to. One of: postgres, oracle, redshift, snowflake, bigquery, duckdb. (DuckDB also handles MotherDuck via DUCKDB_PATH=md:<db>.)"
    },
    {
      "name": "MCP_API_KEYS",
      "format": "string",
      "description": "Comma-separated bearer keys with role and optional warehouse-role impersonation: 'key1:reader,key2:admin', 'key3:reader:set_role=alice'. Leave empty for stdio (OS process boundary is the trust boundary). Required for HTTP."
    },
    {
      "name": "DUCKDB_PATH",
      "format": "string",
      "description": "DuckDB file path, ':memory:', or 'md:<database>' for MotherDuck. Required when WAREHOUSE_TYPE=duckdb."
    },
    {
      "name": "MOTHERDUCK_TOKEN",
      "format": "string",
      "description": "MotherDuck service token. Required when DUCKDB_PATH starts with 'md:'."
    },
    {
      "name": "PG_HOST",
      "description": "Postgres host. Required when WAREHOUSE_TYPE=postgres. (Use REDSHIFT_HOST for Redshift.)"
    },
    {
      "name": "PG_DATABASE",
      "description": "Postgres database name."
    },
    {
      "name": "PG_USER",
      "description": "Postgres user."
    },
    {
      "name": "PG_PASSWORD",
      "description": "Postgres password."
    },
    {
      "name": "ORACLE_USER",
      "description": "Oracle user. Required when WAREHOUSE_TYPE=oracle."
    },
    {
      "name": "ORACLE_PASSWORD",
      "description": "Oracle password."
    },
    {
      "name": "ORACLE_CONNECT_STRING",
      "description": "Oracle Easy Connect (e.g. host:1521/SERVICE), TNS descriptor, or alias."
    },
    {
      "name": "SNOWFLAKE_ACCOUNT",
      "description": "Snowflake account identifier (e.g. xy12345.us-east-1). Required when WAREHOUSE_TYPE=snowflake."
    },
    {
      "name": "SNOWFLAKE_USER",
      "description": "Snowflake username."
    },
    {
      "name": "SNOWFLAKE_PRIVATE_KEY_PATH",
      "description": "Path to PKCS8 private key (.p8). Snowflake auth is key-pair only; password auth is not supported."
    },
    {
      "name": "BIGQUERY_PROJECT",
      "description": "GCP project id. Required when WAREHOUSE_TYPE=bigquery."
    },
    {
      "name": "GOOGLE_APPLICATION_CREDENTIALS",
      "description": "Path to BigQuery service-account JSON. Omit on GKE / Cloud Run with workload identity."
    },
    {
      "name": "GUARDRAIL_PII_MASK",
      "choices": [
        "on",
        "off"
      ],
      "default": "off",
      "description": "Set to 'on' to enable role-aware PII masking on result rows (emails, SSNs, phones, IPs, Luhn-validated CCs). Off by default."
    },
    {
      "name": "MCP_RATE_LIMIT_RPM",
      "default": "0",
      "description": "Per-principal token-bucket rate limit on tool invocations. 0 = disabled. Recommend 60 for production."
    }
  ]
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.

Cursor configuration

{
  "mcpServers": {
    "warehouse-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "warehouse-mcp@0.4.2"
      ],
      "env": {
        "MCP_TRANSPORT": "<YOUR_MCP_TRANSPORT>",
        "WAREHOUSE_TYPE": "<YOUR_WAREHOUSE_TYPE>",
        "MCP_API_KEYS": "<YOUR_MCP_API_KEYS>",
        "DUCKDB_PATH": "<YOUR_DUCKDB_PATH>",
        "MOTHERDUCK_TOKEN": "<YOUR_MOTHERDUCK_TOKEN>",
        "PG_HOST": "<YOUR_PG_HOST>",
        "PG_DATABASE": "<YOUR_PG_DATABASE>",
        "PG_USER": "<YOUR_PG_USER>",
        "PG_PASSWORD": "<YOUR_PG_PASSWORD>",
        "ORACLE_USER": "<YOUR_ORACLE_USER>",
        "ORACLE_PASSWORD": "<YOUR_ORACLE_PASSWORD>",
        "ORACLE_CONNECT_STRING": "<YOUR_ORACLE_CONNECT_STRING>",
        "SNOWFLAKE_ACCOUNT": "<YOUR_SNOWFLAKE_ACCOUNT>",
        "SNOWFLAKE_USER": "<YOUR_SNOWFLAKE_USER>",
        "SNOWFLAKE_PRIVATE_KEY_PATH": "<YOUR_SNOWFLAKE_PRIVATE_KEY_PATH>",
        "BIGQUERY_PROJECT": "<YOUR_BIGQUERY_PROJECT>",
        "GOOGLE_APPLICATION_CREDENTIALS": "<YOUR_GOOGLE_APPLICATION_CREDENTIALS>",
        "GUARDRAIL_PII_MASK": "<YOUR_GUARDRAIL_PII_MASK>",
        "MCP_RATE_LIMIT_RPM": "<YOUR_MCP_RATE_LIMIT_RPM>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.

Cline configuration

{
  "mcpServers": {
    "warehouse-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "warehouse-mcp@0.4.2"
      ],
      "env": {
        "MCP_TRANSPORT": "<YOUR_MCP_TRANSPORT>",
        "WAREHOUSE_TYPE": "<YOUR_WAREHOUSE_TYPE>",
        "MCP_API_KEYS": "<YOUR_MCP_API_KEYS>",
        "DUCKDB_PATH": "<YOUR_DUCKDB_PATH>",
        "MOTHERDUCK_TOKEN": "<YOUR_MOTHERDUCK_TOKEN>",
        "PG_HOST": "<YOUR_PG_HOST>",
        "PG_DATABASE": "<YOUR_PG_DATABASE>",
        "PG_USER": "<YOUR_PG_USER>",
        "PG_PASSWORD": "<YOUR_PG_PASSWORD>",
        "ORACLE_USER": "<YOUR_ORACLE_USER>",
        "ORACLE_PASSWORD": "<YOUR_ORACLE_PASSWORD>",
        "ORACLE_CONNECT_STRING": "<YOUR_ORACLE_CONNECT_STRING>",
        "SNOWFLAKE_ACCOUNT": "<YOUR_SNOWFLAKE_ACCOUNT>",
        "SNOWFLAKE_USER": "<YOUR_SNOWFLAKE_USER>",
        "SNOWFLAKE_PRIVATE_KEY_PATH": "<YOUR_SNOWFLAKE_PRIVATE_KEY_PATH>",
        "BIGQUERY_PROJECT": "<YOUR_BIGQUERY_PROJECT>",
        "GOOGLE_APPLICATION_CREDENTIALS": "<YOUR_GOOGLE_APPLICATION_CREDENTIALS>",
        "GUARDRAIL_PII_MASK": "<YOUR_GUARDRAIL_PII_MASK>",
        "MCP_RATE_LIMIT_RPM": "<YOUR_MCP_RATE_LIMIT_RPM>"
      }
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.

VS Code configuration

{
  "servers": {
    "warehouse-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "warehouse-mcp@0.4.2"
      ],
      "env": {
        "MCP_TRANSPORT": "<YOUR_MCP_TRANSPORT>",
        "WAREHOUSE_TYPE": "<YOUR_WAREHOUSE_TYPE>",
        "MCP_API_KEYS": "<YOUR_MCP_API_KEYS>",
        "DUCKDB_PATH": "<YOUR_DUCKDB_PATH>",
        "MOTHERDUCK_TOKEN": "<YOUR_MOTHERDUCK_TOKEN>",
        "PG_HOST": "<YOUR_PG_HOST>",
        "PG_DATABASE": "<YOUR_PG_DATABASE>",
        "PG_USER": "<YOUR_PG_USER>",
        "PG_PASSWORD": "<YOUR_PG_PASSWORD>",
        "ORACLE_USER": "<YOUR_ORACLE_USER>",
        "ORACLE_PASSWORD": "<YOUR_ORACLE_PASSWORD>",
        "ORACLE_CONNECT_STRING": "<YOUR_ORACLE_CONNECT_STRING>",
        "SNOWFLAKE_ACCOUNT": "<YOUR_SNOWFLAKE_ACCOUNT>",
        "SNOWFLAKE_USER": "<YOUR_SNOWFLAKE_USER>",
        "SNOWFLAKE_PRIVATE_KEY_PATH": "<YOUR_SNOWFLAKE_PRIVATE_KEY_PATH>",
        "BIGQUERY_PROJECT": "<YOUR_BIGQUERY_PROJECT>",
        "GOOGLE_APPLICATION_CREDENTIALS": "<YOUR_GOOGLE_APPLICATION_CREDENTIALS>",
        "GUARDRAIL_PII_MASK": "<YOUR_GUARDRAIL_PII_MASK>",
        "MCP_RATE_LIMIT_RPM": "<YOUR_MCP_RATE_LIMIT_RPM>"
      }
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.

Claude Desktop configuration

{
  "mcpServers": {
    "warehouse-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "warehouse-mcp@0.4.2"
      ],
      "env": {
        "MCP_TRANSPORT": "<YOUR_MCP_TRANSPORT>",
        "WAREHOUSE_TYPE": "<YOUR_WAREHOUSE_TYPE>",
        "MCP_API_KEYS": "<YOUR_MCP_API_KEYS>",
        "DUCKDB_PATH": "<YOUR_DUCKDB_PATH>",
        "MOTHERDUCK_TOKEN": "<YOUR_MOTHERDUCK_TOKEN>",
        "PG_HOST": "<YOUR_PG_HOST>",
        "PG_DATABASE": "<YOUR_PG_DATABASE>",
        "PG_USER": "<YOUR_PG_USER>",
        "PG_PASSWORD": "<YOUR_PG_PASSWORD>",
        "ORACLE_USER": "<YOUR_ORACLE_USER>",
        "ORACLE_PASSWORD": "<YOUR_ORACLE_PASSWORD>",
        "ORACLE_CONNECT_STRING": "<YOUR_ORACLE_CONNECT_STRING>",
        "SNOWFLAKE_ACCOUNT": "<YOUR_SNOWFLAKE_ACCOUNT>",
        "SNOWFLAKE_USER": "<YOUR_SNOWFLAKE_USER>",
        "SNOWFLAKE_PRIVATE_KEY_PATH": "<YOUR_SNOWFLAKE_PRIVATE_KEY_PATH>",
        "BIGQUERY_PROJECT": "<YOUR_BIGQUERY_PROJECT>",
        "GOOGLE_APPLICATION_CREDENTIALS": "<YOUR_GOOGLE_APPLICATION_CREDENTIALS>",
        "GUARDRAIL_PII_MASK": "<YOUR_GUARDRAIL_PII_MASK>",
        "MCP_RATE_LIMIT_RPM": "<YOUR_MCP_RATE_LIMIT_RPM>"
      }
    }
  }
}

Let your agent find its tools

Find servers like warehouse-mcp from your agent. Add Koskamo once to search the index for endpoints, access requirements, and client setup. Public discovery needs no key.

Connect Koskamo Explore workflows

See all 4,665