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maintenanceAnalytical memory for AI agents: a real Postgres your agent connects to over MCP and queries in plain English — GROUP BY, JOIN, aggregate over what it remembered, not just top-k vector recall.
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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?
Uses DuckDB as an embedded analytical database engine.
Why this server?
Allows querying DuckDB databases as a data source via read-only SQL.
AlicenseAqualityAmaintenanceRead-only, PII-masked MCP server for querying data federated through DuckDB — list sources/tables, inspect schemas, and run SQL across Postgres, MySQL, SQLite, Snowflake, BigQuery, Excel, and files, governed per source/table/column by a charter.yaml contract. Snowflake, BigQuery, Excel, and files, governed per source/table/column by a charter.yaml contract.Last updated441Apache 2.0Why 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?
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?
Allows loading data into DuckDB as a destination, and provides tools for data exploration, query, and dashboard creation on loaded data.
dltHub-AI-workbenchofficial
FlicenseAqualityBmaintenanceIt gives Claude Code, Cursor, and Codex structured workflows and an MCP server for building data pipelines with dlt - covering REST API ingestion, transformations, data quality, and exploration.Last updated1752Why this server?
Allows querying DuckDB databases using natural language.
Why 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?
Enables querying Markdown frontmatter data using DuckDB SQL, including support for complex queries with type casting, JSON array operations, and semantic search with vector embeddings.
AlicenseAqualityCmaintenanceEnables querying and updating Markdown frontmatter metadata using DuckDB SQL, with optional semantic search capabilities for finding similar documents based on content.Last updated91MITWhy this server?
Provides SQL query execution and schema exploration capabilities for clinical datasets stored in DuckDB, including MIMIC-IV and eICU tabular data with tools for database schema inspection, table information retrieval, and SELECT query execution.
