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.
Cdc
CDC MCP — wraps CDC open data via Socrata API (data.cdc.gov)
Cdec Ca
California Data Exchange Center (CDEC) hydrology, reservoirs, snow water
Celestrak
CelesTrak MCP — satellite orbital elements (TLE / GP data) for any tracked object.
Censtatd Hk
Hong Kong Census and Statistics Department (C&SD) open-data MCP.
Census Trade
Census Trade MCP — US Census Bureau International Trade data
Cfpb
CFPB MCP — Consumer Financial Protection Bureau complaint database (free, no auth)
Chaos Index
chaos-index MCP — wraps StupidAPIs (requires X-API-Key)
Cheapshark
PC game deals across Steam/Epic/GOG/Humble via CheapShark. Keyless.
chess
Chess.com MCP — wraps the Chess.com public API (free, no auth)
Chile Procurement
Chile Government Procurement MCP — Mercado Público / ChileCompra (keyless-ish).
chucknorris
Chuck Norris MCP — wraps chucknorris.io (free, no auth)
Citybikes
Citybikes MCP — wraps CityBik.es API (free, no auth required)
Clash Royale
Clash Royale player, clan, war, tournament, rankings, cards. Supercell dev key.
Clevelandart
Cleveland Museum of Art Open Access API (~63k artworks, many CC0)
Clickup
ClickUp MCP — wraps the ClickUp REST API v2 (BYO API key)
climate
Climate MCP — wraps Open-Meteo Climate API (free, no auth)
Climatiq
Climatiq MCP — carbon footprint calculator with emission factors
Clinicaltables
NIH Clinical Tables: ICD-10/9, RxTerms, LOINC, NPI, conditions search. Keyless.
Clinicaltrials
ClinicalTrials MCP — wraps ClinicalTrials.gov API v2 (free, no auth)
Close Crm
Close CRM MCP Pack — wraps the Close (close.com) API v1.
Cloudflare Radar
Cloudflare Radar MCP — internet observatory (traffic, attacks, BGP, quality)
Cms
CMS Open Data MCP — US Centers for Medicare & Medicaid Services.