PyPI MCP — wraps the Python Package Index (PyPI) JSON API (free, no auth).
Free
56,572 MCP servers
QuickBooks MCP Pack — query customers, invoices, and accounts via QuickBooks Online API.
Free
Quiver Quantitative MCP — alternative-data on public companies (quiverquant.com)
Free
Reactome MCP — open biological pathway knowledge-base.
Free
Real Estate Japan MCP — actual residential/commercial transaction prices and
Free
Regrid MCP — wraps the Regrid Parcel API v2 (regrid.com)
Free
RemoteOK MCP — remote-work job board (tech-heavy), keyless.
Free
Remotive MCP — curated remote-only job board
Free
Repology MCP — cross-distro package version aggregator.
Free
Sveriges Riksbank (Sweden's central bank) SWEA v1 MCP. Keyless.
Free
Riksdagen (Swedish Parliament) open data MCP.
Free
Roblox MCP.
Free
RubyGems MCP — wraps the RubyGems.org public API (free, no auth)
Free
RxNorm MCP — wraps the NLM RxNav REST API (free, no auth)
Free
Sanctions Screening MCP — screen people, companies, vessels, and aircraft
Free
South African Reserve Bank (SARB) Web API MCP. Keyless.
Free
Science Feeds MCP.
Free
Science MCP — free science data APIs
Free
ScrapingAnt MCP — wraps the ScrapingAnt web scraping API (scrapingant.com)
Free
scream-void MCP — wraps StupidAPIs (keyless — no credential needed)
Free
Scryfall MCP — Magic: The Gathering card database.
Free