Every server in the registry, with its latest security score.
Repology cross-distro package version aggregator
Retractions / research-integrity MCP.
Revternal MCP — wraps the Revternal Developer Intelligence API
Rhea MCP — expert-curated database of biochemical reactions.
Rick and Morty MCP — wraps the Rick and Morty API (free, no auth)
Rick and Morty MCP — wraps The Rick and Morty API (free, no auth)
Rijksmuseum MCP.
Sveriges Riksbank (Sweden's central bank) SWEA v1 MCP. Keyless.
Riksdagen (Swedish Parliament) open data MCP.
RIPE Stat MCP — IP/ASN/BGP data
Roblox public profile + friends + badges + games + groups lookups.
Research Organization Registry (ROR) — canonical org IDs
rss2json: convert any RSS/Atom feed to JSON. Keyless basic, optional API key for count.
RubyGems MCP — wraps the RubyGems.org public API (free, no auth)
RxNorm MCP — wraps the NLM RxNav REST API (free, no auth)
Salesforce MCP Pack
Screen names against the US Consolidated Screening List: OFAC SDN, BIS Entity List +10 more lists
South African Reserve Bank (SARB) Web API MCP. Keyless.
SBIR MCP — wraps the SBIR.gov public API (free, no auth)
Statistics Sweden (SCB) — PxWeb JSON-stat statistical database
JSON Schema catalog (SchemaStore.org)
schrodingers-boolean MCP — wraps StupidAPIs (requires X-API-Key)
Science MCP — free science data APIs
USGS ScienceBase catalog MCP.
Scrapingdog MCP — wraps Scrapingdog (scrapingdog.com), a proxy-based web
12,576–12,600 of 18,884 servers
