mcp-server-motherduck

MotherDuck & DuckDB MCP Server by MotherDuck

A MCP server for MotherDuck and local DuckDB

Live Registry Versionv1.1.0Previous: v1.0.8Published 2026-10-07

Stability Grade

B+ (86/100)

90-Day Velocity

2 releases

Stable release cadence

Dependencies

9 direct

PYPI manifest

License

MIT

Verified on PYPI

Recommended Exact Pin: uvx mcp-server-motherduck@1.1.0

PYPI Registry ->GitHub Repo ->

TL;DR Verdict & Quick Citation Summary (2026-10-24)Source: AgentBreakWatch Live PYPI Index

MotherDuck & DuckDB MCP Server (mcp-server-motherduck) is currently at v1.1.0 on PYPI (published 2026-10-07), with a 90-day stability score of 86/100 (B+) and MEDIUM schema drift risk across 2 releases in the past 90 days. Requires FastMCP / MCP Python SDK v2+ tool schema validation; unpinned uvx mcp-server-motherduck@latest deployments risk parameter drift across query and list_databases. Production teams should pin uvx mcp-server-motherduck@1.1.0 rather than using unpinned @latest tags.

Breaking Changes & Tool Schema Drift Analysis

Requires FastMCP / MCP Python SDK v2+ tool schema validation; unpinned uvx mcp-server-motherduck@latest deployments risk parameter drift across query and list_databases.

Watched Exports / MCP Tool Signatures:

querylist_databasesdescribe_table

Before (Deprecated / Unpinned Pattern)

"mcp-motherduck": {
  "command": "uvx",
  "args": ["mcp-server-motherduck"]
}

After (Verified v1.1.0 Pattern)

"mcp-motherduck": {
  "command": "uvx",
  "args": ["mcp-server-motherduck@1.1.0"],
  "env": { "FASTMCP_LOG_LEVEL": "ERROR" }
}

Frequently Asked Questions: mcp-server-motherduck

What is the latest version of mcp-server-motherduck on PYPI?

As of 2026-10-24, the latest stable version of mcp-server-motherduck (MotherDuck & DuckDB MCP Server by MotherDuck) on PYPI is v1.1.0, published on 2026-10-07. It has shipped 2 releases in the last 90 days.

Does mcp-server-motherduck v1.1.0 have breaking changes or MCP schema drift risk?

mcp-server-motherduck currently carries a MEDIUM schema drift risk rating with a Stability Score of 86/100 (Grade B+). Requires FastMCP / MCP Python SDK v2+ tool schema validation; unpinned uvx mcp-server-motherduck@latest deployments risk parameter drift across query and list_databases.

How do I safely pin mcp-server-motherduck in production?

Avoid unpinned @latest tags in production agent configs. Pin the exact verified version using `uvx mcp-server-motherduck@1.1.0` and monitor query, list_databases, describe_table for parameter or schema changes.

30-Min Registry & Schema Poller

Get Instant Breaking-Change Alerts for mcp-server-motherduck

We poll PYPI and motherduckdb/mcp-server-motherduck every 30 minutes. Get an email with the exact diff when mcp-server-motherduck ships a breaking release beyond v1.1.0.