Research MCP Servers for Perplexity

Space Feeds MCP.

Spaceflight News MCP.

Statistics Norway (SSB) PxWebApi MCP.

Statistics Estonia (andmed.stat.ee) PxWeb MCP. Keyless.

Statistics Greenland (Statistics Greenland) PxWeb MCP.

Statbel — Statistics Belgium (be.STAT / bestat) open data MCP.

StatCan MCP — Statistics Canada (StatCan) via the Web Data Service (WDS).

STATEC (National Institute of Statistics and Economic Studies) of Luxembourg

Statistics Finland (StatFin) PxWeb MCP.

STRING-DB MCP — protein-protein interaction networks.

Trademarks MCP — US trademark search + record lookup

Trove MCP.

Unpaywall MCP — open-access lookup for scholarly papers (free, no key)

US ISO Grid MCP — real-time electricity generation, fuel mix, demand,

USGS Volcano MCP — Volcano Hazards Program HANS-public feed (no auth)

VizieR MCP — CDS astronomical catalogue access.

WHO GHO MCP — World Health Organization Global Health Observatory (free, no auth)

Wikidata MCP — wraps Wikidata API (wikidata.org/w/api.php)

Wikipedia MCP — wraps Wikipedia REST API (free, no auth)

Wikiquote MCP — sourced quotations

Provide structured access to ClinicalTrials.gov data for searching, retrieving, and analyzing clin…