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Cosvoice MCP Server

Developer ToolsLow Risk10.0MCP RegistryRemote
Free

Server data from the Official MCP Registry

A real phone number and email for your AI Chief of Staff. Calls, bookings by phone, summaries.

About

A real phone number and email for your AI Chief of Staff. Calls, bookings by phone, summaries.

Remote endpoints: streamable-http: https://cosvoice.com/mcp

Security Report

10.0
Low Risk10.0Low Risk

Valid MCP server (1 strong, 1 medium validity signals). No known CVEs in dependencies. Imported from the Official MCP Registry.

Endpoint verified · Requires authentication · 1 issue found

Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.

Permissions Required

This plugin requests these system permissions. Most are normal for its category.

HTTP Network Access

Connects to external APIs or services over the internet.

How to Connect

Remote Plugin

No local installation needed. Your AI client connects to the remote endpoint directly.

Add this to your MCP configuration to connect:

{
  "mcpServers": {
    "com-cosvoice-cosvoice": {
      "url": "https://cosvoice.com/mcp"
    }
  }
}

Documentation

View on GitHub

From the project's GitHub README.

CosVoice for Grok Bot, Claude, ChatGPT, and Cursor

Give your Chief of Staff a phone. CosVoice gives an AI assistant its own real phone number (in your area code) and its own email address. 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.

ClientHow
Grok Bot / GrokSettings → Plugins → add a custom MCP server by URL, or install this plugin
Claude (web, desktop, Code)Add a custom connector / claude mcp add --transport http cosvoice https://cosvoice.com/mcp
ChatGPTSettings → Connectors → add MCP server by URL (developer mode)
CursorAdd to Cursor or paste the URL under Settings → MCP

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

ToolWhat it does
get_account, search_numbers, create_lineFirst-run setup: check the account, find numbers in an area code, create the line
place_callCall a real number and hold a live conversation on your behalf (async; poll get_call)
book_reservationBook a table by phone with a time window, fallbacks, seating, occasion, dietary notes
get_call, list_calls, list_reservations, annotate_callSummaries, structured details, transcripts, outcomes
send_text, list_messagesTexts from and to the line (STOP respected)
list_emails, get_email, forward_emailThe line's own inbox
list_contacts, add_contact, remove_contactOwner, approved, VIP, blocked callers
get_settings, update_settings, set_webhookPersona, voice, greeting, standing instructions, call.completed webhooks
ack_instructionsTexts you send the line from your own phone arrive as instructions on every tool result; acknowledge when handled
list_history, recent_activity, list_integrationsUnified history, catch-up since a timestamp, partner tools

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.json and .claude-plugin/plugin.json — plugin manifests
  • server.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: hello@cosvoice.com

MIT licensed. CosVoice is a product of MimesisIQ.

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