Agent Callback Mailbox for Cursor

us.inversolabs/agent-callback-mailbox

Paid replay-safe callback inboxes for asynchronous agent tasks with structured MCP results.

client:Cursor transport:streamable-http

Install Agent Callback Mailbox in Cursor

~/.cursor/mcp.json · windows: %USERPROFILE%\.cursor\mcp.json

{
  "mcpServers": {
    "agent-callback-mailbox": {
      "url": "https://callbacks.inversolabs.us/mcp"
    }
  }
}

Use .cursor/mcp.json in a project root instead to scope it to that project. Cursor merges both. Cursor docs