CosVoice for Grok Bot, Claude, ChatGPT, and Cursor
An office for your AI Bot. CosVoice gives an AI assistant a real phone number (in your area code), a real email address, and a desk that keeps notes. The assistant can place calls for you, book restaurants by phone, answer the calls you miss, and read a written summary of every call. The voice on the line is Grok Voice, full duplex, and it always says it is an AI assistant when asked.
Website: https://cosvoice.com · Setup page written for the assistant: https://cosvoice.com/skill
Connect in one paste
https://cosvoice.com/mcp
Add that as a remote MCP server (Streamable HTTP). CosVoice uses OAuth 2.1 with PKCE and dynamic client registration, so a CosVoice page opens, you sign in, click Allow, and the assistant is connected. There is no API key to copy.
Clients that only support a static header can use a key from Settings → Connect your agent as Authorization: Bearer cv_live_….
Then let the assistant set itself up
Send it: "Set up my CosVoice line in area code 949. Call it Lloyd."
It calls search_numbers, shows you options, and create_line. Payment comes first: if no plan is on file, create_line returns a checkout link for you to complete, then the number is issued.
What it can do
What this repo contains
skills/cosvoice/SKILL.md— the skill (same text as https://cosvoice.com/skill).mcp.json— the hosted server entry (type: http, OAuth).grok-plugin/plugin.jsonand.claude-plugin/plugin.json— plugin manifestsserver.json— the official MCP Registry entry (com.cosvoice/cosvoice)
No code runs on your machine. The plugin only points your client at the hosted server.
Rules the line follows
Never pays or reads out a card. Always says it is an AI assistant when asked. Uses its own number and email as the callback unless you say otherwise. Never claims a booking unless the call outcome says so. Respects STOP for texts.
Pricing
Starter $29/mo (60 min), Plus $69/mo (200 min), Pro $149/mo (600 min), overage $0.25/min. One number per paid month. Details: https://cosvoice.com/pricing
Links
Trust and safety: https://cosvoice.com/trust · FAQ: https://cosvoice.com/faq · Privacy: https://cosvoice.com/privacy · Terms: https://cosvoice.com/terms · Support: [email protected]
MIT licensed. CosVoice is a product of MimesisIQ.