CoSVoice

CosVoice provides AI assistants with a real phone number and a dedicated email address, enabling them to handle everyday calls and messages on a user’s behalf. Compatible with assistants including Grok, ChatGPT, Claude, Cursor, and other MCP-enabled tools, the service can call restaurants to make bookings, contact contractors and offices, answer callbacks, navigate phone menus, and connect a person when needed. After each call or email, CosVoice sends the user a concise written summary; calls also include a full transcript. The assistant’s email can receive and reply to messages, with each exchange summarized for the user.

Setup involves adding CosVoice to an assistant’s MCP settings, authorizing the connection, and selecting a local-area phone number. The service can also work as a phone line users can call or text. CosVoice emphasizes user-directed activity: it calls only when instructed, identifies itself as AI when asked, and does not provide card details or agree to charges. Plans include the phone number, email address, and assistant connection, with pricing based on minutes.