killcord for Cursor

com.edgethirteen.www/killcord

Dead-man's switch for Anthropic API spend: kills the key the instant it crosses a limit you set.

client:Cursor transport:streamable-http

Install killcord in Cursor

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

{
  "mcpServers": {
    "killcord": {
      "url": "https://www.edgethirteen.com/api/mcp/killcord"
    }
  }
}

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