Cactus
Verified · yesterdayNCI CACTUS Chemical Identifier Resolver MCP.
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Calendly
Verified · yesterdayCalendly MCP Pack — wraps the Calendly API v2 for scheduling data.
caruon
Verified · yesterdayCarbon MCP — UK Carbon Intensity API (free, no auth)
Carbon Interface
Verified · yesterdayCarbon Interface MCP — Carbon Interface API (v1)
Cataas
Verified · yesterdayCATAAS MCP — Cat as a Service (free, no auth)
catfacts
Verified · yesterdayCat Facts MCP — wraps Cat Facts API (free, no auth)
Cbioportal
Verified · yesterdaycBioPortal MCP — cancer genomics portal.
Cbs Il
Verified · yesterdayIsrael Central Bureau of Statistics (CBS / הלשכה המרכזית לסטטיסטיקה) MCP.
Cbs Nl
Verified · yesterdayStatistics Netherlands (CBS / StatLine) OData MCP.
Cdc
Verified · yesterdayCDC MCP — wraps CDC open data via Socrata API (data.cdc.gov)
Cdec Ca
Verified · 7 days agoCalifornia Data Exchange Center (CDEC) hydrology, reservoirs, snow water
Celestrak
Verified · 2 days agoCelesTrak MCP — satellite orbital elements (TLE / GP data) for any tracked object.
Censtatd Hk
Verified · yesterdayHong Kong Census and Statistics Department (C&SD) open-data MCP.
Census
Verified · yesterdayCensus MCP — U.S. Census Bureau housing-relevant APIs.
Census Trade
Verified · yesterdayCensus Trade MCP — US Census Bureau International Trade data
Cftc Cot
Verified · yesterdayCFTC Commitment of Traders (COT) MCP.
Chainlist
Verified · yesterdayChainlist MCP — registry of EVM chains
Chargebee
Verified · yesterdayChargebee MCP Pack — wraps the Chargebee API v2
Cheapshark
Verified · yesterdayPC game deals across Steam/Epic/GOG/Humble via CheapShark. Keyless.
chess
Verified · 2 days agoChess.com MCP — wraps the Chess.com public API (free, no auth)