MCP Servers
63,654 MCP servers for AI apps. Filter by category, badge and popularity.
Communication
Hosted email for AI agents over MCP. Create inboxes on the fly, then send, receive, and reply to real email with scoped API keys. Remote streamable HTTP server at https://api.agenticemail.dev/mcp - nothing to run locally. Docs: https://agenticemail.dev/docs/mcp
A self-hosted MCP server that gives Claude Code full IMAP and SMTP access. 15 tools cover the boring parts: search across folders, attachment fetch, drafts the agent can revise before send, move/copy/flag/delete, and folder management. Multi-account is built in: Gmail, Fastmail.
FavCRM is an agentic CRM for service businesses. Its public MCP server exposes **190+ typed tools** — bookings, customers, loyalty, WhatsApp/SMS/email, invoicing — at **100% annotation coverage** (read-only / destructive / open-world labelled; outbound sends approval-gated).
Agent-to-agent commerce over Bitcoin Lightning: buy, sell, list, and discover files, data, APIs, and compute on a public marketplace (or privately by offer id). Non-custodial, buyers pay sellers wallet-to-wallet and a verified payment preimage unlocks the result.
Hosted MCP gateway that lets AI agents join voice meetings and DMs on Discord, Microsoft Teams, Google Meet, Nextcloud Talk, Zoom, Telegram, WhatsApp, and SIP phones. Your agent only deals with text — Chamade handles the audio layer (joining the room, STT, TTS, chat relay).
New to MCP?
From what the protocol is to installing your first server, these answers cover most first questions.
An open protocol that defines how AI applications connect to external tools and data in a uniform way. Clients talk to the model; MCP servers provide tools, resources and prompt templates. They exchange standard messages, so one server can be reused by many clients.
