Remote Servers
32,689 MCP servers with a hosted endpoint. Nothing to install: copy the URL and connect.
Communication
Agent-native helpdesk. AI agents operate a support desk over MCP and pay per action in USDC via x402 (HTTP 402) — no account, no API key. Reads (KB/changelog search) are free; write/AI tools are $0.02–$0.06 per call, settled across Base, Polygon, Avalanche, Sei, and Solana
Postal mail API for AI agents. mailbox.bot lets agents send outbound physical mail, including letters, certified mail, postcards, and batch mailings, with cost previews, approval controls, tracking, proof artifacts, and signed webhooks. It also supports inbound mail context from
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.
