MotherDuck / DuckDB MCP

DATABASES · https://github.com/motherduckdb/mcp-server-motherduck

Exact configuration: mcp-server-motherduck --db-path /data/bench.duckdb

Advertised tools (4): execute_query list_databases list_tables list_columns

Each cell lists every attempt: ✓ pass, ✗ fail, other codes are timeouts or excluded attempts (hover for the reason). Click any attempt for its full, redacted transcript (JSON lines).

task	Claude Code · Sonnet 5.5	Codex CLI · GPT-5.6 Terra
db-list-tables core	✓✓	✓✓
db-describe core	✓✓	✓✓
db-count core	✓✓	✓✓
db-filter core	✓✓	✓✓
db-aggregate core	✓✓	✓✓
db-top core	✓✓	✓✓
db-join core	✓✓	✓✓
db-nulls core	✓✓	✓✓
db-three-way core	✓✓	✓✓
db-group-top core	✓✓	✓✓
db-date-range core	✓✓	✓✓
db-distinct core	✓✓	✓✓
db-reconcile core	✓✓	✓✓
db-discover core	✓✓	✓✓
db-missing-table core	✓✓	✓✓
db-unicode core	✓✓	✓✓
db-large-result core	✓✓	✓✓
db-write extended	✓✓	✓✓