Python MCP server for PostgreSQL database inspection and querying
Python MCP server for PostgreSQL database inspection and querying
A Python Model Context Protocol (MCP) server for inspecting and querying PostgreSQL databases from MCP-compatible clients. It provides schema discovery, safe read-only query execution, query explanation, table previews, index analysis, relationship inspection, and PostgreSQL resources for table metadata.
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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 |
|---|---|
| postgresql_list_tables | List public base tables |
| postgresql_describe_table | Show columns and metadata for a table |
| postgresql_execute_read_query | Run bounded SQL under read-only transaction mode |
| postgresql_execute_write_query | Run a single approved modifying SQL statement and commit |
| postgresql_explain_query | Return PostgreSQL EXPLAIN output for a single query |
| postgresql_get_database_summary | Return database version and table count |
| postgresql_get_relationships | Inspect foreign-key relationships |
| postgresql_analyze_indexes | Inspect indexes and sizes |
| postgresql_preview_table | Return up to 10 rows from a table |
| postgresql_search_sql_definitions | Search public SQL routines/functions |
{
"mcpServers": {
"postgresql-server": {
"command": "uvx",
"args": ["mdev-postgresql-mcp-server"],
"env": {
"POSTGRES_HOST": "your-value",
"POSTGRES_PORT": "your-value",
"POSTGRES_USER": "your-value",
"POSTGRES_PASSWORD": "your-value",
"POSTGRES_DB": "your-value"
}
}
}
}Add to claude_desktop_config.json, then restart Claude Desktop.
| Variable | Description | Required |
|---|---|---|
| POSTGRES_HOST | Endpoint or connection string the server talks to. | Optional |
| POSTGRES_PORT | Configuration value read at startup. | Optional |
| POSTGRES_USER | Configuration value read at startup. | Optional |
| POSTGRES_PASSWORD | Configuration value read at startup. | Optional |
| POSTGRES_DB | Configuration value read at startup. | Optional |
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