Directory
All MCP servers, page 419
30,000 servers with a safety grade, ranked by user rating first, then by real adoption. Every one has been scanned against the public rubric, and the findings are on its safety page. Nothing on this list is sponsored.
Mastodon MCP — public Mastodon data via mastodon.social (no auth required)
No reviews yetgateway-readyFreeMaterials MCP — computed (DFT) materials structures & thermodynamic properties.
No reviews yetgateway-readyFreeMath.js MCP — wraps the mathjs.org API (free, no auth)
No reviews yetgateway-readyFreeMaven Central MCP — Java/JVM artifact registry
No reviews yetgateway-readyFreeMBTA MCP — Boston real-time transit via the MBTA v3 API (api-v3.mbta.com)
No reviews yetgateway-readyFreeMDN Search MCP
No reviews yetgateway-readyFreeMediastack MCP — wraps Mediastack API (api.mediastack.com/v1)
No reviews yetgateway-readyFreeMedical codes MCP.
No reviews yetgateway-readyFreeMedlinePlus MCP — NIH consumer health info
No reviews yetgateway-readyFreemempool.space MCP — Bitcoin block explorer + mempool/fee stats
No reviews yetgateway-readyFreemercury-number MCP — wraps StupidAPIs (keyless — no credential needed)
No reviews yetgateway-readyFreeMerriam-Webster MCP — wraps the Merriam-Webster Collegiate Dictionary and Collegiate Thesaurus…
No reviews yetgateway-readyFreeNLM MeSH (Medical Subject Headings) MCP.
No reviews yetgateway-readyFreeMET Norway (api.met.no) MCP — global weather, Nordics specials.
No reviews yetgateway-readyFreeMetaboLights MCP — EBI's metabolomics study repository.
No reviews yetgateway-readyFreeMetals API MCP — wraps Metals-API (metals-api.com)
No reviews yetgateway-readyFreeMeteors MCP — NASA fireball, near-Earth asteroid, and close approach data
No reviews yetgateway-readyFreeMeteostat MCP — historical weather from 11k+ stations (no auth)
No reviews yetgateway-readyFreeMFAPI.in MCP — Indian mutual-fund NAV (net asset value) data.
No reviews yetgateway-readyFreeMicrolink MCP — wraps Microlink API (free tier, no auth required)
No reviews yetgateway-readyFreeMicrosoft OneNote (Microsoft 365) MCP Pack
No reviews yetgateway-readyFreeMicrosoft To Do (Microsoft 365) MCP Pack
No reviews yetgateway-readyFreeMIME type lookup MCP.
No reviews yetgateway-readyFreeMITRE ATT&CK MCP — STIX bundles from github.com/mitre/cti.
No reviews yetgateway-readyFreeMITRE CWE API MCP.
No reviews yetgateway-readyFreeMLB Stats API MCP — official MLB statistics (keyless).
No reviews yetgateway-readyFreeMock data generator MCP.
No reviews yetgateway-readyFreeMojang/Minecraft MCP.
No reviews yetgateway-readyFreeMoldova Government Procurement (MTender) MCP — keyless.
No reviews yetgateway-readyFreeMonarch Initiative MCP — biomedical knowledge graph.
No reviews yetgateway-readyFree
