Best DuckDB MCP Servers
DuckDB is an in-process SQL OLAP database management system designed for analytical queries with a simple, embeddable architecture that supports various programming languages and platforms.
Why this server?
Allows running data quality validation rules against a DuckDB database, including completeness, uniqueness, and statistical checks.
AlicenseBqualityAmaintenanceAgentic data quality MCP server — runs structured validation rules against warehouses (DuckDB, BigQuery, Athena, Databricks, Postgres), diagnoses failures with LLM root cause analysis, and proposes SQL remediations. Full audit trail of every AI decision.Last updated64Apache 2.0Why this server?
Connects to DuckDB databases for profiling and monitoring.
Why this server?
Enables SQL queries against blockchain data through DuckDB, supporting data exploration, schema inspection, and complex analytics on downloaded blockchain datasets with various filtering and aggregation capabilities.
AlicenseAqualityDmaintenanceAn API server that implements the Model Completion Protocol (MCP) for Cryo blockchain data extraction, allowing users to query Ethereum blockchain data through any MCP-compatible client.Last updated1091MITWhy this server?
Enables querying of geographic data stored in parquet files via DuckDB's HTTP filesystem support.
AlicenseAqualityBmaintenanceRemote MCP server for geographic data. Free and x402 paid packs all normalized for cross domain joins. Start with get_catalog, then get_pack for details.Last updated92MITWhy this server?
Uses DuckDB to query provider-level Medicaid claims data from local Parquet files, enabling high-performance analysis of HCPCS codes, NPI-specific spending, and service summaries.
AlicenseBqualityDmaintenanceProvides access to Medicaid public data including drug pricing (NADAC), state enrollment trends, federal upper limits, drug rebate information, and utilization statistics through a hybrid CSV caching and DKAN API approach.Last updated12MITWhy this server?
Uses DuckDB as a local cache for high-performance SQL queries, statistical analysis, and geospatial operations on downloaded open data.
AlicenseAqualityFmaintenanceAn MCP server for discovering, downloading, querying, and analyzing datasets from Ontario's open data portals, allowing natural language questions and high-performance analytics via DuckDB.Last updated231MITWhy this server?
Enables querying the code search index and knowledge graph as SQL tables via HTTP API, allowing correlation with other data sources in DuckDB.
AlicenseAqualityBmaintenanceA 100% local MCP server for semantic and lexical search over your code, library docs, and PDFs, featuring hybrid BM25 and dense retrieval, syntax aware chunking, and an optional code knowledge graph. It also ships a Coral integration, so you can expose your code search as SQL and join it with live data, all without anything leaving your machine.Last updated67Apache 2.0Why this server?
Enables querying local IBGE microdata Parquet files using DuckDB SQL, allowing for efficient read-only queries and weighted distribution calculations.
AlicenseAqualityBmaintenanceLocal-first MCP server for discovering, downloading, and analyzing official IBGE microdata using DuckDB and Parquet.Last updated221MITWhy this server?
The server implementation was inspired by and incorporates code from mcp-server-duckdb, suggesting potential DuckDB database connectivity capabilities.
AlicenseBqualityDmaintenanceA Model Context Protocol server that enables AI assistants to securely interact with ClickHouse databases, supporting table exploration and SQL query execution through a controlled interface.Last updated18Apache 2.0