Connects Claude to your MachFive account for generating hyper-personalized cold email sequences through AI research. You get six tools: list campaigns, generate sequences for single leads (synchronous, takes 3-10 minutes), submit batch jobs for multiple leads (async), check batch status, browse lists, and export results as JSON or CSV. Authentication works three ways: API key in the URL path, Bearer token header, or plain Authorization header. Use it when you want to skip the MachFive UI and tell Claude "generate a 3-email sequence for jane@acme.com using my SaaS Founders campaign" or "submit these 50 leads and export when done." Supports Claude Desktop, Cursor, n8n workflows, and any client with Streamable HTTP transport.