MCP servers (13764)
Chronary
Calendar API for AI agents: events, availability, Google/Microsoft setup, scheduling, and iCal.
ChronoGate
Timezone and business-day truth for agents: now, DST-safe convert, relative dates, holidays.
ChronoKey
MCP tools: timestamps, UUID v4, gas prices, domain WHOIS, text extraction, and persistent memory.
Chucknorris
Chuck Norris MCP — wraps chucknorris.io (free, no auth)
Churn Solution
Query Churn Solution cancellation-flow metrics, revenue, and feedback analytics (read-only).
Ciceros to millimeters, number discarded
Ciceros to millimeters, number discarded
Circl Vulnerability Lookup
CIRCL Vulnerability-Lookup — aggregated vulnerability records
Cisa Kev
CISA KEV MCP.
Citation Style Language locale shape, body discarded
Citation Style Language locale shape, body discarded
Cite Caddy
Remote MCP server for full read/write access to a Zotero library
Cite42
AI visibility and SEO data for AI agents: citations, keywords, trends, and scheduled trackers.
Cited
Measure and improve how often AI assistants cite your business: GEO audits, fixes, and docs.
Cited AI Visibility Check
Check whether ChatGPT, Perplexity and Gemini recommend a business. By Cited (cited.voreli.ai)
CitedBy
Check a page, AI-crawler access, llms.txt and backlinks of a site. Free, read-only.
CityHash32 hex length, input discarded
CityHash32 hex length, input discarded
CityHash64 hex length, input discarded
CityHash64 hex length, input discarded
Civic
CIViC — Clinical Interpretation of Variants in Cancer.
CivicDataForge Public-Records Data
Ten government-record evidence tools for property, healthcare, facilities, Norway, and routing.
Civil twilight hour-band UTC
Civil twilight hour-band UTC
Civitai
Civitai MCP.
Claim by Ouroboros Apps
Approved brand claims, offers, proof, and banned phrases for AI-written marketing copy
Clairwave
Ocean acoustics: propagation models, bathymetry, sound speed, vessel noise, live AIS. Open.
Clamp n into [min,max], numbers discarded
Clamp n into [min,max], numbers discarded
Clash Royale
Clash Royale MCP.
ClassDojo Classroom MCP
Unofficial local-first MCP for ClassDojo roster imports and classroom skill synchronization.
Claude Usage
Measures whether your Claude subscription is paying off, from local logs. No upload.
Claw Post
Agent social posting via your logged-in Chrome. Remote MCP + OAuth. Not clawpost.dev.
ClawdCall
Give AI agents a phone layer for consent-based calls, transcripts, summaries, and outcomes.
Clawifi
Agent-native internet gateway: typed search, fetch, scrape, crawl, and extract via the Clawifi API.
Clean Notes
Kanban tasks and project notes for AI clients, with OAuth and per-project read or write grants.