Production MCP server for Postgres, Oracle, Snowflake, BigQuery, Redshift, DuckDB, MotherDuck.
Production MCP server for Postgres, Oracle, Snowflake, BigQuery, Redshift, DuckDB, MotherDuck.
Production MCP (Model Context Protocol) server for your data warehouse. Read-only enforcement, five-tier role-based access, optional warehouse-role impersonation (for native RLS / CLS), JSONL audit log, optional output PII masking, optional semantic-metadata layer (glossary + table docs) with per-session toggle. Self-host the Docker image, install via npx, or wait for the upcoming managed cloud variant.
Compare MCP servers by category, or browse hosted MCP servers if you prefer an endpoint over a local process.
Check the linked publisher documentation and your connected client's tool list. Names and availability can vary with the server version and account permissions.
| Tool | What it does |
|---|---|
| query | Execute a SELECT (validator-enforced read-only, dialect-aware) |
| find_columns | Search column names across the warehouse with a LIKE pattern |
| get_foreign_keys | Discover declared FK relationships for safe joins |
| get_view_definition | Read the SQL body of a view (where business logic lives) |
| time_series | Bucket by hour/day/week/month/quarter/year — dialect-correct everywhere |
| search_value | Find a literal across a table's text columns |
| glossary_lookup | Read business-glossary terms from the semantic layer (in-memory, no warehouse I/O) |
| schema_lookup | Read schema-level docs — purpose, owner, refresh, table list |
| table_lookup | Read full semantic doc for one table — description + column metadata |
{
"mcpServers": {
"warehouse": {
"command": "npx",
"args": ["-y", "warehouse-mcp"],
"env": {
"SNOWFLAKE_PRIVATE_KEY_PATH": "your-value",
"DUCKDB_PATH": "your-value",
"MOTHERDUCK_TOKEN": "your-value"
}
}
}
}Add to claude_desktop_config.json, then restart Claude Desktop.
| Variable | Description | Required |
|---|---|---|
| SNOWFLAKE_PRIVATE_KEY_PATH | Credential the server authenticates with. | Yes |
| DUCKDB_PATH | Filesystem location the server is allowed to use. | Optional |
| MOTHERDUCK_TOKEN | Credential the server authenticates with. | Yes |
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