Cursor speaks Model Context Protocol natively, so adding myagentinbox takes one config change. After this, Cursor's agent can create throwaway inboxes, read incoming mail, and pull verification codes without asking you.
1Open Cursor settings. Cmd/Ctrl + , → search for "MCP" → click Edit in settings.json (or use the MCP servers panel directly).
2Add the server under mcpServers:
{
"mcpServers": {
"myagentinbox": {
"command": "npx",
"args": ["mcp-remote", "https://myagentinbox.com/mcp"]
}
}
}3Reload Cursor. Open a new chat and check the tools list — create_inbox, check_inbox, read_message, and download_attachment should all appear.
mcp-remote is the shim that lets stdio-based MCP clients talk to remote HTTP MCP servers like ours.
Open a new chat in agent mode and try:
Sign me up for the Vercel newsletter using a throwaway email.
Wait for the welcome message and tell me the unsubscribe link.Cursor will create an inbox, paste the address into the signup form (using its browser tool), poll for messages, and read back the link. The whole flow is autonomous.
create_inbox — returns a fresh @myagentinbox.com address (24 h TTL)check_inbox — lists subjects, senders, and previewsread_message — full body of one messagedownload_attachment — images as base64, text inline, binary as URL