dolthub/dolt
Dolt is a SQL database with Git-like version control capabilities, enabling users to manage, version, and collaborate on data and schemas as easily as code in Git repositories.
ktanaka101/mcp-server-duckdb
mcp-server-duckdb is a Model Context Protocol server implementation for DuckDB, the embedded analytical database, aimed at local data analysis driven by a language model. The design is deliberately minimal: instead of many specialised endpoints the server exposes one tool, query, which takes any valid DuckDB SQL statement as a string and returns the result rows as text, or a success message for statements such as CREATE and INSERT. The authors argue that modern models can already generate the right SQL for selects, joins, table creation and schema inspection, so separate tools for each operation add no value. No custom MCP resources or prompts are implemented. Configuration is short. The required db-path parameter points at the DuckDB database file, and the server creates the file and any missing parent directories automatically. The optional readonly flag opens the database with read_only set, which enforces DuckDB native read-only protection so the model cannot run CREATE, INSERT, UPDATE or DELETE; in that mode a missing database file is not created and the server fails to start instead. A second optional flag, keep-connection, reuses a single DuckDB connection for the whole server lifetime, which enables temporary objects and slightly faster queries at the cost of holding an exclusive lock on the file. The package is published on PyPI, installs for Claude Desktop through Smithery, and is normally launched with uvx from the mcpServers block of the Claude Desktop configuration file on macOS or Windows. Development needs Python with the uv package manager, the DuckDB Python package and the MCP server dependencies. Because MCP servers communicate over stdio, the README recommends debugging with MCP Inspector, which shows request and response traffic, tool execution, server state and errors.
https://github.com/ktanaka101/mcp-server-duckdb
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