Coldrig — cold-email infra run by your agent: 28 MCP tools, live sending, free sandbox. $99/mo.
Install
Run one of the commands below, then add the client config underneath.
npx -y agent-cold-emailhttps://agent-cold-email-api.yaakovscher.workers.dev/mcpClient configuration
Paste into Claude Desktop, Cursor (mcp.json), VS Code or any MCP client, then restart the client.
{
"mcpServers": {
"agent-cold-email": {
"command": "npx",
"args": [
"-y",
"agent-cold-email"
]
}
}
}About this server
Agent Cold Email is listed in the Communication category of the MCPNav directory. It is distributed as npm, Streamable HTTP and can be loaded by any client that speaks the Model Context Protocol.
Typical uses include giving your assistant scoped access to the corresponding service so it can answer questions and take actions with real data instead of guessing. Always review what a server can access before you enable it — see our MCP security guide.
Frequently asked questions
What is the Agent Cold Email MCP server?＋
Agent Cold Email is an MCP server by YS-projectcalc. Coldrig — cold-email infra run by your agent: 28 MCP tools, live sending, free sandbox. $99/mo.
How do I install Agent Cold Email?＋
Install it with: npx -y agent-cold-email. Then add the JSON config to your client's MCP settings and restart the client.
Is Agent Cold Email free to use?＋
The MCP server itself is free to install. The source is public on https://github.com/YS-projectcalc/agent-cold-email. Any third-party API it calls (such as a search or maps API) may require its own key and billing.
Which clients support Agent Cold Email?＋
Any MCP-compatible client can use it, including Claude Desktop, Cursor, VS Code, Windsurf and custom agents.