CosVoice MCP MCP server

CosVoice provides an official MCP server that integrates a real phone number and email address into AI agents. It enables agents to place and receive calls, send texts and emails, book reservations via phone, and manage contacts. The server allows AI assistants to act as a Chief of Staff by handling voice interactions, summarizing call transcripts, and triggering workflows based on communication events.

Endpoint and access

OAuth sign-in: the first time you connect, your client opens the vendor's own authorization prompt in a browser.

OAuth sign-inEndpoint checked 2026-10-05Operated by CosVoice

MCP endpoint (Streamable HTTP)

https://cosvoice.com/mcp

Vendor documentation

What you can do with it

Place phone calls to book restaurant tables or schedule appointments
Receive and summarize incoming voice calls for the user
Send and read emails and text messages from the AI agent's line
Manage contacts and calendar bookings through voice commands

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http cosvoice-mcp https://cosvoice.com/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add cosvoice-mcp --url https://cosvoice.com/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable cosvoice-mcp in your MCP settings.

Cursor configuration

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

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.

Cline configuration

{
  "mcpServers": {
    "cosvoice-mcp": {
      "type": "streamableHttp",
      "url": "https://cosvoice.com/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start cosvoice-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "cosvoice-mcp": {
      "type": "http",
      "url": "https://cosvoice.com/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http cosvoice-mcp https://cosvoice.com/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

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

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

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

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