Best database MCP servers for Claude Code

WikiPathways MCP — open community pathway database.

Paleobiology Database (PBDB) MCP — the global fossil record. Keyless.

SGD (Saccharomyces Genome Database) MCP.

Health Canada Drug Product Database (fleet #522).

PubChem MCP — NIH chemistry compound database (no auth)

IntAct (EBI) molecular-interaction database MCP. Keyless.

UniProt MCP — protein sequence + function database.

PomBase MCP — the fission yeast (Schizosaccharomyces pombe) model-organism database.

NVD MCP — wraps the NIST National Vulnerability Database API.

Rhea MCP — expert-curated database of biochemical reactions.

Kolada (RKA) MCP — Sweden's municipal & regional key-performance-indicator (KPI) database.

SIMBAD MCP — CDS astronomical object database.

NSF Awards MCP — National Science Foundation award database (free, no auth)

GeoNames MCP — GeoNames geographical database API

MobilityData's open catalogue of public-transport feeds — ~4,500 GTFS schedule feeds and ~1,900…

Inspect and query MySQL 5.0–5.6; opt-in INSERT/UPDATE/DELETE/DDL. Live-verified 5.0–8.0.

IGDB — the Internet Game Database (Twitch/Amazon), the reference catalogue

legislation.gov.uk MCP — the UK's official legislation database.

NBER Macrohistory Database — the National Bureau of Economic Research's

gnomAD MCP — Broad Institute Genome Aggregation Database (GraphQL).

Jungle Scout MCP — Amazon sales estimates + product database + keyword data

OpenCellID MCP — cell tower geolocation database (free with key)

Trefle MCP — global plant database (1M+ species)

Trivia MCP — wraps Open Trivia Database (free, no auth)