MCP standardizes how an AI client discovers and calls tools, so any compliant agent can use any compliant server. Servers can be local (stdio) or remote (Streamable HTTP). Remote servers are the easiest to adopt — one line connects them and there's nothing to install.
Forward is a remote MCP server for getting customers: claude mcp add --transport http forward https://getforward.xyz/mcp. It's self-provisioning — the forward_signup tool mints an account with $25 free credits, no signup page. See the MCP server that gets you customers and best MCP servers for sales and marketing.