MCP Servers
Model Context Protocol servers that give AI agents access to tools and data — sourced from the official MCP registry and ranked by GitHub stars.
Cms Open Payments
CMS Open Payments, with annual dataset discovery through the official DKAN API.
Cnb Cz
Czech National Bank (Česká národní banka, ČNB) public API MCP. Keyless.
Cnpj Br
CNPJ Brazil MCP — Brazilian company-registry (Receita Federal) lookup via
Codeforces
Codeforces competitive programming users, contests, problems
Codewars
Codewars user profiles, completed kata, authored kata, kata detail. Keyless.
Coingecko
CoinGecko MCP — wraps CoinGecko free API (no auth required)
Coinmarketcap
CoinMarketCap MCP — crypto prices, market cap, rankings
College Scorecard
College Scorecard MCP — US Department of Education College Scorecard API
Colombia Secop
Colombia SECOP MCP — Colombian government procurement (public contracting).
Color Pizza
Color Pizza MCP — names hex colors using human-friendly color-name lists.
Comicvine
Comic Vine: characters, issues, volumes, creators, publishers. Free key.
Committee Releases
Committee Releases — documents congressional committees publish on their OWN
Commons Wikimedia
Wikimedia Commons file/image/audio/video search via MediaWiki Action API
Companies House
Companies House MCP — UK statutory company registry (BYO key)
Comtrade
Comtrade MCP — UN Comtrade API for international bilateral trade data
Conceptnet
ConceptNet MCP — open multilingual word/phrase relation graph
Confluence
Confluence MCP — wraps the Confluence Cloud REST API v2 (OAuth)
Congress
Congress MCP — US Congress data via GovTrack API (free, no auth required)
Congressional Documents
Congressional Documents — full-text search and retrieval over the official
Conspiracy Theory
conspiracy-theory MCP — wraps StupidAPIs (requires X-API-Key)
Coresignal
Coresignal MCP — LinkedIn-adjacent company + employee data (coresignal.com)
Corporate Apology
corporate-apology MCP — wraps StupidAPIs (requires X-API-Key)